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authorLena Startseva <lena.startseva@mariadb.com>2022-09-19 12:26:59 +0700
committerIgor Babaev <igor@askmonty.org>2023-03-15 17:35:22 -0700
commit1e0a72a18b134106da59be4594836b6b66bbc539 (patch)
tree9a9d5779db218193ffbe8be77063201923e0b1d5 /mysql-test
parent9a3fd1df01bec29e206d1cc97a9c1f9226555265 (diff)
downloadmariadb-git-1e0a72a18b134106da59be4594836b6b66bbc539.tar.gz
MDEV-29390: Improve coverage for UPDATE and DELETE statements in MTR test suites
Created tests for "delete" based on update_use_source.test For the update_use_source.test tests, data recovery in the table has been changed from a rollback transaction to a complete delete and re-insert of the data with optimize table. Cases are now being checked on three engines. Added tests for update/delete with LooseScan and DuplicateWeedout optimization strategies Added tests for engine MEMORY on delete and update Added tests for multi-update with JSON_TABLE Added tests for multi-update and multi-delete for engine Connect
Diffstat (limited to 'mysql-test')
-rw-r--r--mysql-test/include/delete_use_source.inc94
-rw-r--r--mysql-test/include/delete_use_source_cases.inc214
-rw-r--r--mysql-test/include/delete_use_source_cases_memory.inc294
-rw-r--r--mysql-test/include/delete_use_source_cases_non_innodb.inc81
-rw-r--r--mysql-test/include/delete_use_source_innodb.inc91
-rw-r--r--mysql-test/include/delete_use_source_memory.inc33
-rw-r--r--mysql-test/include/update_use_source.inc292
-rw-r--r--mysql-test/include/update_use_source_cases.inc183
-rw-r--r--mysql-test/include/update_use_source_ext.inc59
-rw-r--r--mysql-test/main/delete_single_to_multi.result830
-rw-r--r--mysql-test/main/delete_single_to_multi.test244
-rw-r--r--mysql-test/main/delete_use_source_engines.result8870
-rw-r--r--mysql-test/main/delete_use_source_engines.test42
-rw-r--r--mysql-test/main/update_single_to_multi.result615
-rw-r--r--mysql-test/main/update_single_to_multi.test242
-rw-r--r--mysql-test/main/update_use_source.result10033
-rw-r--r--mysql-test/main/update_use_source.test250
-rw-r--r--mysql-test/suite/json/r/json_table.result101
-rw-r--r--mysql-test/suite/json/t/json_table.test94
19 files changed, 21785 insertions, 877 deletions
diff --git a/mysql-test/include/delete_use_source.inc b/mysql-test/include/delete_use_source.inc
new file mode 100644
index 00000000000..3f789767142
--- /dev/null
+++ b/mysql-test/include/delete_use_source.inc
@@ -0,0 +1,94 @@
+create table t1 (c1 integer, c2 integer, c3 integer);
+
+insert into t1(c1,c2,c3)
+ values (1,1,1),(1,2,2),(1,3,3),
+ (2,1,4),(2,2,5),(2,3,6),
+ (2,4,7),(2,5,8);
+insert into t1 select c1+10,c2,c3+10 from t1;
+insert into t1 select c1+20,c2+1,c3+20 from t1;
+analyze table t1 persistent for all;
+
+create view v1 as select * from t1 where c2=2;
+
+--echo #######################################
+--echo # Test without any index #
+--echo #######################################
+--source include/delete_use_source_cases.inc
+--source include/delete_use_source_cases_non_innodb.inc
+
+--echo #######################################
+--echo # Test with an index #
+--echo #######################################
+create index t1_c2 on t1 (c2,c1);
+--source include/delete_use_source_cases.inc
+--source include/delete_use_source_cases_non_innodb.inc
+
+--echo #######################################
+--echo # Test with a primary key #
+--echo #######################################
+drop index t1_c2 on t1;
+alter table t1 add primary key (c3);
+--source include/delete_use_source_cases.inc
+--source include/delete_use_source_cases_non_innodb.inc
+
+drop view v1;
+drop table t1;
+
+--echo #
+--echo # Test on dynamic columns (blob)
+--echo #
+create table assets (
+ item_name varchar(32) primary key, -- A common attribute for all items
+ dynamic_cols blob -- Dynamic columns will be stored here
+);
+
+INSERT INTO assets
+ VALUES ('MariaDB T-shirt',
+ COLUMN_CREATE('color', 'blue', 'size', 'XL'));
+INSERT INTO assets
+ VALUES ('Thinkpad Laptop',
+ COLUMN_CREATE('color', 'black', 'price', 500));
+INSERT INTO assets
+ VALUES ('Fridge',
+ COLUMN_CREATE('color', 'white', 'warranty', '5 years'));
+INSERT INTO assets
+ VALUES ('Microwave',
+ COLUMN_CREATE('warranty', '3 years'));
+SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color
+ FROM assets ORDER BY item_name;
+UPDATE assets SET dynamic_cols=COLUMN_DELETE(dynamic_cols, 'color')
+ WHERE item_name='Fridge';
+SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color
+ FROM assets ORDER BY item_name;
+DELETE FROM assets
+ WHERE item_name in
+ (select b.item_name from assets b
+ where COLUMN_GET(b.dynamic_cols, 'color' as char) ='black');
+SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color
+ FROM assets ORDER BY item_name;
+DELETE FROM assets WHERE item_name='Microwave';
+SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color
+ FROM assets ORDER BY item_name;
+drop table assets ;
+
+
+--echo #
+--echo # Test on fulltext columns
+--echo #
+CREATE TABLE ft2(copy TEXT,FULLTEXT(copy));
+INSERT INTO ft2(copy) VALUES
+ ('MySQL vs MariaDB database'),
+ ('Oracle vs MariaDB database'),
+ ('PostgreSQL vs MariaDB database'),
+ ('MariaDB overview'),
+ ('Foreign keys'),
+ ('Primary keys'),
+ ('Indexes'),
+ ('Transactions'),
+ ('Triggers');
+
+SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('database');
+DELETE FROM ft2 WHERE MATCH(copy) AGAINST('database');
+SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('database');
+drop table ft2;
+
diff --git a/mysql-test/include/delete_use_source_cases.inc b/mysql-test/include/delete_use_source_cases.inc
new file mode 100644
index 00000000000..24408b7dd50
--- /dev/null
+++ b/mysql-test/include/delete_use_source_cases.inc
@@ -0,0 +1,214 @@
+--echo #
+--echo # Delete with value from subquery on the same table
+--echo #
+
+analyze table t1 persistent for all;
+
+let $c = c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+eval create table tmp as select * from t1 where $c;
+let $q = delete from t1 where $c;
+eval explain select * from t1 where $c;
+eval explain $q;
+--enable_info ONCE
+eval $q;
+--sorted_result
+select * from t1;
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+
+--echo #
+--echo # Delete with EXISTS subquery over the updated table
+--echo # in WHERE + possibly sargable condition
+--echo #
+
+analyze table t1 persistent for all;
+
+let $c = c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+eval create table tmp as select * from t1 where $c;
+let $q = delete from t1 where $c;
+eval explain select * from t1 where $c;
+eval explain $q;
+eval analyze $q;
+--sorted_result
+select * from t1;
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+
+--echo #
+--echo # Delete with IN predicand over the updated table in WHERE
+--echo #
+let $c = c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+eval create table tmp as select * from t1 where $c;
+let $q = delete from t1 where $c;
+eval explain select * from t1 where $c;
+eval explain $q;
+--enable_info ONCE
+eval $q;
+--sorted_result
+select * from t1;
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+
+--echo #
+--echo # Delete with a limit - can be deleted
+--echo #
+let $c = c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+eval create table tmp as select * from t1 where $c;
+let $q = delete from t1 where $c;
+eval explain select * from t1 where $c;
+eval explain $q;
+eval analyze $q;
+--sorted_result
+select * from t1;
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+
+--echo #
+--echo # Delete with a limit and an order by
+--echo #
+
+let $c = c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+ order by c3 desc limit 1;
+eval create table tmp as select * from t1 where $c;
+let $q = delete from t1 where $c;
+eval explain select * from t1 where $c;
+eval explain $q;
+--enable_info ONCE
+eval $q;
+--sorted_result
+select * from t1;
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+
+--echo #
+--echo # Delete: 2 execution of PS
+--echo #
+
+prepare create_tmp_stmt from
+ "create table tmp as select * from t1
+ where c2=(select a.c3 from t1 a where a.c3 = ?)";
+prepare delete_t1_stmt from
+ "delete from t1 where c2=(select a.c3 from t1 a where a.c3 = ?)";
+set @a:=5;
+execute create_tmp_stmt using @a;
+execute delete_t1_stmt using @a;
+execute delete_t1_stmt using @a;
+--sorted_result
+select * from t1;
+
+prepare insert_tmp_stmt from
+ "insert into tmp(c1,c2,c3) select * from t1
+ where c2=(select a.c3 from t1 a where a.c3 = ?)";
+set @a:=2;
+execute insert_tmp_stmt using @a;
+execute delete_t1_stmt using @a;
+--sorted_result
+select * from t1;
+
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+--sorted_result
+select * from t1;
+
+drop table tmp;
+
+--echo #
+--echo # Delete in stored procedure
+--echo #
+
+delimiter //;
+create procedure sp()
+begin
+ delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+ order by c3 desc limit 1;
+end
+//
+delimiter ;//
+
+create table tmp as select * from t1
+ where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+ order by c3 desc limit 1;
+CALL sp;
+insert into tmp(c1,c2,c3) select * from t1
+ where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+ order by c3 desc limit 1;
+CALL sp;
+insert into tmp(c1,c2,c3) select * from t1
+ where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+ order by c3 desc limit 1;
+CALL sp;
+--sorted_result
+select * from t1;
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop procedure sp;
+drop table tmp;
+
+--echo #
+--echo # Delete in stored function
+--echo #
+delimiter //;
+create function f1(IN a INT) returns int
+begin
+ delete from t1 where c3 < a order by c3 limit 1;
+ return 1;
+end;//
+delimiter ;//
+
+set @a:=7;
+create table tmp as select * from t1 where c3 < @a
+ order by c3 limit 1;
+select f1(@a);
+insert into tmp(c1,c2,c3) select * from t1 where c3 < @a
+ order by c3 limit 1;
+select f1(@a);
+--sorted_result
+select * from t1;
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop function f1;
+drop table tmp;
+
+--echo #
+--echo # Delete in trigger
+--echo #
+
+create table t2 (c1 integer);
+insert into t2(c1) values (1), (2), (3), (4), (5), (6), (7), (8);
+
+CREATE TABLE cnt(del integer);
+INSERT INTO cnt VALUES(0);
+
+CREATE TRIGGER tr1 AFTER DELETE ON t1 FOR EACH ROW
+ UPDATE cnt SET del=del+1;
+CREATE TRIGGER tr2 AFTER DELETE ON t1 FOR EACH ROW
+ DELETE FROM t2 WHERE c1> (SELECT count(*)-1 FROM t2);
+
+CREATE TABLE tmp as SELECT * FROM t1 WHERE c2>=3;
+--enable_info ONCE
+DELETE FROM t1 WHERE c2>=3;
+
+--sorted_result
+select * from t1;
+--sorted_result
+SELECT * FROM t2;
+SELECT * FROM cnt;
+
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+
+DROP TRIGGER tr1;
+DROP TRIGGER tr2;
+drop table t2, cnt, tmp;
+
+--echo #
+--echo # Delete with a reference to view in subquery
+--echo #
+let $c = t1.c2 in ( select max(a.c2) from v1 a
+ where a.c1 = t1.c1);
+eval create table tmp as select * from t1 where $c;
+let $q = delete from t1 where $c;
+eval explain select * from t1 where $c;
+eval explain $q;
+eval analyze $q;
+--sorted_result
+select * from t1;
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+
diff --git a/mysql-test/include/delete_use_source_cases_memory.inc b/mysql-test/include/delete_use_source_cases_memory.inc
new file mode 100644
index 00000000000..7a61b59e2a5
--- /dev/null
+++ b/mysql-test/include/delete_use_source_cases_memory.inc
@@ -0,0 +1,294 @@
+--echo #
+--echo # Delete with value from subquery on the same table
+--echo #
+
+analyze table t1 persistent for all;
+
+let $c = c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+eval create table tmp as select * from t1 where $c;
+let $q = delete from t1 where $c;
+eval explain select * from t1 where $c;
+eval explain $q;
+--enable_info ONCE
+eval $q;
+--sorted_result
+select * from t1;
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+
+--echo #
+--echo # Delete with EXISTS subquery over the updated table
+--echo # in WHERE + possibly sargable condition
+--echo #
+
+analyze table t1 persistent for all;
+
+let $c = c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+eval create table tmp as select * from t1 where $c;
+let $q = delete from t1 where $c;
+eval explain select * from t1 where $c;
+eval explain $q;
+--enable_info ONCE
+eval $q;
+--sorted_result
+select * from t1;
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+
+--echo #
+--echo # Delete with EXISTS subquery over the updated table
+--echo # in WHERE + non-sargable condition
+--echo #
+
+analyze table t1 persistent for all;
+
+let $c = exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+eval create table tmp as select * from t1 where $c;
+let $q = delete from t1 where $c;
+eval explain select * from t1 where $c;
+eval explain $q;
+--enable_info ONCE
+eval $q;
+--sorted_result
+select * from t1;
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+
+--echo #
+--echo # Delete with order by
+--echo #
+
+analyze table t1 persistent for all;
+
+let $c = exists (select 'X' from t1 a where a.c2 = t1.c2)
+ and c2 >= 3 order by c2;
+eval create table tmp as select * from t1 where $c;
+let $q = delete from t1 where $c;
+eval explain select * from t1 where $c;
+eval explain $q;
+--enable_info ONCE
+eval $q;
+--sorted_result
+select * from t1;
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+
+--echo #
+--echo # Delete with IN predicand over the updated table in WHERE
+--echo #
+let $c = c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+eval create table tmp as select * from t1 where $c;
+let $q = delete from t1 where $c;
+eval explain select * from t1 where $c;
+eval explain $q;
+--enable_info ONCE
+eval $q;
+--sorted_result
+select * from t1;
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+
+--echo #
+--echo # Delete with a limit - can be deleted
+--echo #
+let $c = c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+eval create table tmp as select * from t1 where $c;
+let $q = delete from t1 where $c;
+eval explain select * from t1 where $c;
+eval explain $q;
+--enable_info ONCE
+eval $q;
+--sorted_result
+select * from t1;
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+
+--echo #
+--echo # Delete with a limit and an order by
+--echo #
+
+let $c = c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+ order by c3 desc limit 1;
+eval create table tmp as select * from t1 where $c;
+let $q = delete from t1 where $c;
+eval explain select * from t1 where $c;
+eval explain $q;
+--enable_info ONCE
+eval $q;
+--sorted_result
+select * from t1;
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+
+--echo #
+--echo # Delete: 2 execution of PS
+--echo #
+
+prepare create_tmp_stmt from
+ "create table tmp as select * from t1
+ where c2=(select a.c3 from t1 a where a.c3 = ?)";
+prepare delete_t1_stmt from
+ "delete from t1 where c2=(select a.c3 from t1 a where a.c3 = ?)";
+set @a:=5;
+execute create_tmp_stmt using @a;
+execute delete_t1_stmt using @a;
+execute delete_t1_stmt using @a;
+--sorted_result
+select * from t1;
+
+prepare insert_tmp_stmt from
+ "insert into tmp(c1,c2,c3) select * from t1
+ where c2=(select a.c3 from t1 a where a.c3 = ?)";
+set @a:=2;
+execute insert_tmp_stmt using @a;
+execute delete_t1_stmt using @a;
+--sorted_result
+select * from t1;
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+--sorted_result
+select * from t1;
+
+drop table tmp;
+
+--echo #
+--echo # Delete in stored procedure
+--echo #
+
+delimiter //;
+create procedure sp()
+begin
+ delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+ order by c3 desc limit 1;
+end
+//
+delimiter ;//
+
+create table tmp as select * from t1
+ where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+ order by c3 desc limit 1;
+CALL sp;
+insert into tmp(c1,c2,c3) select * from t1
+ where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+ order by c3 desc limit 1;
+CALL sp;
+insert into tmp(c1,c2,c3) select * from t1
+ where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+ order by c3 desc limit 1;
+CALL sp;
+--sorted_result
+select * from t1;
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop procedure sp;
+drop table tmp;
+
+--echo #
+--echo # Delete in stored function
+--echo #
+delimiter //;
+create function f1(IN a INT) returns int
+begin
+ delete from t1 where c3 < a order by c3 limit 1;
+ return 1;
+end;//
+delimiter ;//
+
+set @a:=7;
+create table tmp as select * from t1 where c3 < @a
+ order by c3 limit 1;
+select f1(@a);
+insert into tmp(c1,c2,c3) select * from t1 where c3 < @a
+ order by c3 limit 1;
+select f1(@a);
+--sorted_result
+select * from t1;
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop function f1;
+drop table tmp;
+
+--echo #
+--echo # Delete in trigger
+--echo #
+
+create table t2 (c1 integer);
+insert into t2(c1) values (1), (2), (3), (4), (5), (6), (7), (8);
+
+CREATE TABLE cnt(del integer);
+INSERT INTO cnt VALUES(0);
+
+CREATE TRIGGER tr1 AFTER DELETE ON t1 FOR EACH ROW
+ UPDATE cnt SET del=del+1;
+CREATE TRIGGER tr2 AFTER DELETE ON t1 FOR EACH ROW
+ DELETE FROM t2 WHERE c1> (SELECT count(*)-1 FROM t2);
+
+CREATE TABLE tmp as SELECT * FROM t1 WHERE c2>=3;
+--enable_info ONCE
+DELETE FROM t1 WHERE c2>=3;
+
+--sorted_result
+select * from t1;
+--sorted_result
+SELECT * FROM t2;
+SELECT * FROM cnt;
+
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+
+DROP TRIGGER tr1;
+DROP TRIGGER tr2;
+drop table t2, cnt, tmp;
+
+--echo #
+--echo Delete with a reference to view in subquery
+--echo #
+let $c = t1.c2 in ( select max(a.c2) from v1 a
+ where a.c1 = t1.c1);
+eval create table tmp as select * from t1 where $c;
+let $q = delete from t1 where $c;
+eval explain select * from t1 where $c;
+eval explain $q;
+--enable_info ONCE
+eval $q;
+--sorted_result
+select * from t1;
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+
+--echo #
+--echo # Delete from view
+--echo #
+
+analyze table t1 persistent for all;
+
+let $c = v1.c1 in
+ (select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+eval create table tmp as select * from v1 where $c;
+let $q = delete from v1 where $c;
+eval explain select * from v1 where $c;
+eval explain $q;
+--enable_info ONCE
+eval $q;
+--sorted_result
+select * from t1;
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+
+--echo #
+--echo # Delete from view using reference
+--echo # to the same view in subquery
+--echo #
+
+analyze table t1 persistent for all;
+
+let $c = v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+ and c1 = 2
+ and exists (select 'X' from v1 a where a.c1 = v1.c1);
+eval create table tmp as select * from v1 where $c;
+let $q = delete from v1 where $c;
+eval explain select * from v1 where $c;
+eval explain $q;
+--enable_info ONCE
+eval $q;
+--sorted_result
+select * from t1;
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+
diff --git a/mysql-test/include/delete_use_source_cases_non_innodb.inc b/mysql-test/include/delete_use_source_cases_non_innodb.inc
new file mode 100644
index 00000000000..caa581716dc
--- /dev/null
+++ b/mysql-test/include/delete_use_source_cases_non_innodb.inc
@@ -0,0 +1,81 @@
+--echo #
+--echo # Delete with EXISTS subquery over the updated table
+--echo # in WHERE + non-sargable condition
+--echo #
+
+analyze table t1 persistent for all;
+
+let $c = exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+eval create table tmp as select * from t1 where $c;
+let $q = delete from t1 where $c;
+eval explain select * from t1 where $c;
+eval explain $q;
+--enable_info ONCE
+eval $q;
+--sorted_result
+select * from t1;
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+
+--echo #
+--echo # Delete with order by
+--echo #
+
+analyze table t1 persistent for all;
+
+let $c = exists (select 'X' from t1 a where a.c2 = t1.c2)
+ and c2 >= 3 order by c2;
+eval create table tmp as select * from t1 where $c;
+let $q = delete from t1 where $c;
+--replace_column 9 #
+eval explain select * from t1 where $c;
+--replace_column 9 #
+eval explain $q;
+--replace_column 9 #
+eval analyze $q;
+--sorted_result
+select * from t1;
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+
+--echo #
+--echo # Delete from view
+--echo #
+
+analyze table t1 persistent for all;
+
+let $c = v1.c1 in
+ (select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+eval create table tmp as select * from v1 where $c;
+let $q = delete from v1 where $c;
+eval explain select * from v1 where $c;
+eval explain $q;
+--enable_info ONCE
+eval $q;
+--sorted_result
+select * from t1;
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+
+--echo #
+--echo # Delete from view using reference
+--echo # to the same view in subquery
+--echo #
+
+analyze table t1 persistent for all;
+
+let $c = v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+ and c1 = 2
+ and exists (select 'X' from v1 a where a.c1 = v1.c1);
+eval create table tmp as select * from v1 where $c;
+let $q = delete from v1 where $c;
+--replace_column 9 #
+eval explain select * from v1 where $c;
+--replace_column 9 #
+eval explain $q;
+--replace_column 9 #
+eval analyze $q;
+--sorted_result
+select * from t1;
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
diff --git a/mysql-test/include/delete_use_source_innodb.inc b/mysql-test/include/delete_use_source_innodb.inc
new file mode 100644
index 00000000000..83915d47656
--- /dev/null
+++ b/mysql-test/include/delete_use_source_innodb.inc
@@ -0,0 +1,91 @@
+create table t1 (c1 integer, c2 integer, c3 integer);
+
+insert into t1(c1,c2,c3)
+ values (1,1,1),(1,2,2),(1,3,3),
+ (2,1,4),(2,2,5),(2,3,6),
+ (2,4,7),(2,5,8);
+insert into t1 select c1+10,c2,c3+10 from t1;
+insert into t1 select c1+20,c2+1,c3+20 from t1;
+analyze table t1 persistent for all;
+
+create view v1 as select * from t1 where c2=2;
+
+--echo #######################################
+--echo # Test without any index #
+--echo #######################################
+--source include/delete_use_source_cases.inc
+
+--echo #######################################
+--echo # Test with an index #
+--echo #######################################
+create index t1_c2 on t1 (c2,c1);
+--source include/delete_use_source_cases.inc
+
+--echo #######################################
+--echo # Test with a primary key #
+--echo #######################################
+drop index t1_c2 on t1;
+alter table t1 add primary key (c3);
+--source include/delete_use_source_cases.inc
+
+drop view v1;
+drop table t1;
+
+--echo #
+--echo # Test on dynamic columns (blob)
+--echo #
+create table assets (
+ item_name varchar(32) primary key, -- A common attribute for all items
+ dynamic_cols blob -- Dynamic columns will be stored here
+);
+
+INSERT INTO assets
+ VALUES ('MariaDB T-shirt',
+ COLUMN_CREATE('color', 'blue', 'size', 'XL'));
+INSERT INTO assets
+ VALUES ('Thinkpad Laptop',
+ COLUMN_CREATE('color', 'black', 'price', 500));
+INSERT INTO assets
+ VALUES ('Fridge',
+ COLUMN_CREATE('color', 'white', 'warranty', '5 years'));
+INSERT INTO assets
+ VALUES ('Microwave',
+ COLUMN_CREATE('warranty', '3 years'));
+SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color
+ FROM assets ORDER BY item_name;
+UPDATE assets SET dynamic_cols=COLUMN_DELETE(dynamic_cols, 'color')
+ WHERE item_name='Fridge';
+SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color
+ FROM assets ORDER BY item_name;
+DELETE FROM assets
+ WHERE item_name in
+ (select b.item_name from assets b
+ where COLUMN_GET(b.dynamic_cols, 'color' as char) ='black');
+SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color
+ FROM assets ORDER BY item_name;
+DELETE FROM assets WHERE item_name='Microwave';
+SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color
+ FROM assets ORDER BY item_name;
+drop table assets ;
+
+
+--echo #
+--echo # Test on fulltext columns
+--echo #
+CREATE TABLE ft2(copy TEXT,FULLTEXT(copy));
+INSERT INTO ft2(copy) VALUES
+ ('MySQL vs MariaDB database'),
+ ('Oracle vs MariaDB database'),
+ ('PostgreSQL vs MariaDB database'),
+ ('MariaDB overview'),
+ ('Foreign keys'),
+ ('Primary keys'),
+ ('Indexes'),
+ ('Transactions'),
+ ('Triggers');
+
+SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('database');
+DELETE FROM ft2 WHERE MATCH(copy) AGAINST('database');
+SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('database');
+drop table ft2;
+
diff --git a/mysql-test/include/delete_use_source_memory.inc b/mysql-test/include/delete_use_source_memory.inc
new file mode 100644
index 00000000000..dbaae1a6120
--- /dev/null
+++ b/mysql-test/include/delete_use_source_memory.inc
@@ -0,0 +1,33 @@
+create table t1 (c1 integer, c2 integer, c3 integer);
+
+insert into t1(c1,c2,c3)
+ values (1,1,1),(1,2,2),(1,3,3),
+ (2,1,4),(2,2,5),(2,3,6),
+ (2,4,7),(2,5,8);
+insert into t1 select c1+10,c2,c3+10 from t1;
+insert into t1 select c1+20,c2+1,c3+20 from t1;
+analyze table t1 persistent for all;
+
+create view v1 as select * from t1 where c2=2;
+
+--echo #######################################
+--echo # Test without any index #
+--echo #######################################
+--source include/delete_use_source_cases_memory.inc
+
+--echo #######################################
+--echo # Test with an index #
+--echo #######################################
+create index t1_c2 on t1 (c2,c1);
+--source include/delete_use_source_cases_memory.inc
+
+--echo #######################################
+--echo # Test with a primary key #
+--echo #######################################
+drop index t1_c2 on t1;
+alter table t1 add primary key (c3);
+--source include/delete_use_source_cases_memory.inc
+
+drop view v1;
+drop table t1;
+
diff --git a/mysql-test/include/update_use_source.inc b/mysql-test/include/update_use_source.inc
index 3c487704233..e1b66d2b996 100644
--- a/mysql-test/include/update_use_source.inc
+++ b/mysql-test/include/update_use_source.inc
@@ -1,150 +1,188 @@
# Include to test update with same table as source and target
---echo #
---echo # Update a with value from subquery on the same table, no search clause. ALL access
---echo #
-
-#Enable view protocol after fix MDEV-29207
---disable_view_protocol
-start transaction;
+create table t1 (old_c1 integer,
+ old_c2 integer,
+ c1 integer,
+ c2 integer,
+ c3 integer);
+
+create view v1 as select * from t1 where c2=2;
+delimiter /;
+create trigger trg_t1 before update on t1 for each row
+begin
+ set new.old_c1=old.c1;
+ set new.old_c2=old.c2;
+end;
+/
+delimiter ;/
+
+insert into t1(c1,c2,c3)
+ values (1,1,1), (1,2,2), (1,3,3),
+ (2,1,4), (2,2,5), (2,3,6),
+ (2,4,7), (2,5,8);
+insert into t1 select NULL, NULL, c1+10,c2,c3+10 from t1;
+insert into t1 select NULL, NULL, c1+20,c2+1,c3+20 from t1;
+analyze table t1 persistent for all;
+
+create table tmp as select * from t1;
+
+--echo #######################################
+--echo # Test without any index #
+--echo #######################################
+--source include/update_use_source_cases.inc
+
+--echo #######################################
+--echo # Test with an index #
+--echo #######################################
+create index t1_c2 on t1 (c2,c1);
+analyze table t1;
+--source include/update_use_source_cases.inc
+
+--echo #######################################
+--echo # Test with a primary key #
+--echo #######################################
+drop index t1_c2 on t1;
+alter table t1 add primary key (c3);
+analyze table t1;
+--source include/update_use_source_cases.inc
+
+--echo # Update with error "Subquery returns more than 1 row"
+--error ER_SUBQUERY_NO_1_ROW
+update t1 set c2=(select c2 from t1);
+--sorted_result
+select c1,c2,c3 from t1;
+
+--echo # Update with error "Subquery returns more than 1 row"
+--echo # and order by
+--error ER_SUBQUERY_NO_1_ROW
+update t1 set c2=(select c2 from t1) order by c3;
+--sorted_result
+select c1,c2,c3 from t1;
+
+-- echo # Duplicate value on update a primary key
+--error ER_DUP_ENTRY
+
+update t1 set c3=0
+ where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+--sorted_result
+select c1,c2,c3 from t1;
+truncate table t1;
+insert into t1 select * from tmp;
+
+-- echo # Duplicate value on update a primary key with ignore
--enable_info ONCE
-update t1
- set c1=(select a.c3
- from t1 a
- where a.c3 = t1.c3);
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ;
-rollback;
-
---echo #
---echo # Update with search clause on the same table
---echo #
-
-start transaction;
+update ignore t1 set c3=0
+ where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+--sorted_result
+select c1,c2,c3 from t1;
+truncate table t1;
+insert into t1 select * from tmp;
+
+-- echo # Duplicate value on update a primary key and limit
+--error ER_DUP_ENTRY
+update t1 set c3=0
+ where exists (select 'X' from t1 a where a.c2 = t1.c2)
+ and c2 >= 3 limit 2;
+--sorted_result
+select c1,c2,c3 from t1;
+truncate table t1;
+insert into t1 select * from tmp;
+
+-- echo # Duplicate value on update a primary key with ignore
+-- echo # and limit
--enable_info ONCE
-update t1
- set c1=10
- where c1 <2
- and exists (select 'X'
- from t1 a
- where a.c1 = t1.c1);
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ;
-rollback;
-
---echo #
---echo # Update via RANGE or INDEX access if an index or a primary key exists
---echo #
-
-explain update t1 set c1=0 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 > 3;
-start transaction;
+update ignore t1 set c3=0
+ where exists (select 'X' from t1 a where a.c2 = t1.c2)
+ and c2 >= 3 limit 2;
+--sorted_result
+select c1,c2,c3 from t1;
+truncate table t1;
+insert into t1 select * from tmp;
+
+--echo # Update no rows found
--enable_info ONCE
-update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
-rollback;
-
---echo #
---echo # Update with order by
---echo #
-
-start transaction;
-update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3 order by c2;
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
-rollback;
-
---echo #
---echo Update using a view in subquery
---echo #
-
-start transaction;
+update t1 set c1=10
+ where c1 <2 and exists (select 'X' from t1 a where a.c1 = t1.c1 + 10);
+--sorted_result
+select c1,c2,c3 from t1;
+truncate table t1;
+insert into t1 select * from tmp;
+
+--echo # Update no rows changed
+drop trigger trg_t1;
--enable_info ONCE
-update t1
- set c1=c1 +(select max(a.c2)
- from v1 a
- where a.c1 = t1.c1) ;
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
-rollback;
+update t1 set c1=c1
+ where c1 <2 and exists (select 'X' from t1 a where a.c1 = t1.c1);
+--sorted_result
+select c1,c2,c3 from t1;
+truncate table t1;
+insert into t1 select * from tmp;
--echo #
---echo # Update throw a view
+--echo # Check call of after trigger
--echo #
-start transaction;
---enable_info ONCE
-update v1
- set c1=c1 + (select max(a.c2)
- from t1 a
- where a.c1 = v1.c1) +10
-where c3 > 3;
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
-rollback;
-
---echo #
---echo # Update through a view and using the view in subquery
---echo #
+delimiter /;
+create or replace trigger trg_t2 after update on t1 for each row
+begin
+ declare msg varchar(100);
+ if (new.c3 = 5) then
+ set msg=concat('in after update trigger on ',new.c3);
+ SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = msg;
+ end if;
+end;
+/
+delimiter ;/
+--error 1644
-start transaction;
---enable_info ONCE
-update v1
- set c1=c1 + 1
- where c1 <2
- and exists (select 'X'
- from v1 a
- where a.c1 = v1.c1);
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
-rollback;
+update t1 set c1=2
+ where c3 in (select distinct a.c3 from t1 a where a.c1=t1.c1);
+--sorted_result
+select c1,c2,c3 from t1;
+truncate table t1;
+insert into t1 select * from tmp;
--echo #
---echo # Update through a view and using the view in subquery
+--echo # Check update with order by and after trigger
--echo #
-start transaction;
---enable_info ONCE
-update v1
- set c1=(select max(a.c1)+10
- from v1 a
- where a.c1 = v1.c1)
- where c1 <10
- and exists (select 'X'
- from v1 a
- where a.c2 = v1.c2);
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
-rollback;
+--error 1644
+update t1 set c1=2
+ where c3 in (select distinct a.c3 from t1 a where a.c1=t1.c1)
+ order by t1.c2, t1.c1;
+--sorted_result
+select c1,c2,c3 from t1;
+truncate table t1;
+insert into t1 select * from tmp;
+
+drop view v1;
--echo #
---echo # Update of the index or primary key (c3)
+--echo # Check update on view with check option
--echo #
-start transaction;
-explain update t1 set c3=c3+10 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
---enable_info ONCE
-update t1 set c3=c3+10 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
-select c3 from t1;
-rollback;
+create view v1 as select * from t1 where c2=2 with check option;
---echo #
---echo # update with a limit
---echo #
+-- error 1369
+update v1 set c2=3 where c1=1;
+--sorted_result
+select c1,c2,c3 from t1;
+truncate table t1;
+insert into t1 select * from tmp;
-start transaction;
---enable_info ONCE
-update t1
- set c1=(select a.c3
- from t1 a
- where a.c3 = t1.c3)
- limit 2;
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ;
-rollback;
+-- error 1369
+update v1 set c2=(select max(c3) from v1) where c1=1;
+--sorted_result
+select c1,c2,c3 from t1;
+truncate table t1;
+insert into t1 select * from tmp;
---echo #
---echo # update with a limit and an order by
---echo #
+update v1 set c2=(select min(va.c3) from v1 va), c1=0 where c1=1;
+--sorted_result
+select c1,c2,c3 from t1;
+truncate table t1;
+insert into t1 select * from tmp;
-start transaction;
---enable_info ONCE
-update t1
- set c1=(select a.c3
- from t1 a
- where a.c3 = t1.c3)
- order by c3 desc limit 2;
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ;
-rollback;
---enable_view_protocol
+drop table tmp;
+drop view v1;
+drop table t1;
diff --git a/mysql-test/include/update_use_source_cases.inc b/mysql-test/include/update_use_source_cases.inc
new file mode 100644
index 00000000000..f1025f75cb1
--- /dev/null
+++ b/mysql-test/include/update_use_source_cases.inc
@@ -0,0 +1,183 @@
+--echo #
+--echo # Update with value from subquery on the same table
+--echo #
+
+analyze table t1 persistent for all;
+let $q = update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+eval explain select * from t1;
+eval explain $q;
+--enable_info ONCE
+eval $q;
+select concat(old_c1,'->',c1),c3,
+ case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+truncate table t1;
+insert into t1 select * from tmp;
+
+--echo #
+--echo # Update with EXISTS subquery over the updated table
+--echo # in WHERE + possibly sargable condition
+--echo #
+
+analyze table t1 persistent for all;
+let $c = c1 <2
+ and exists (select 'X' from t1 a where a.c1 = t1.c1);
+let $q = update t1 set c1=10 where $c;
+eval explain select * from t1 where $c;
+eval explain $q;
+--enable_info ONCE
+eval $q;
+select concat(old_c1,'->',c1),c3,
+ case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+truncate table t1;
+insert into t1 select * from tmp;
+
+--echo #
+--echo # Update with EXISTS subquery over the updated table
+--echo # in WHERE + non-sargable condition
+--echo #
+
+analyze table t1 persistent for all;
+let $c = exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+let $q = update t1 set c1=c1+10 where $c;
+eval explain select * from t1 where $c;
+eval explain $q;
+--enable_info ONCE
+eval $q;
+select concat(old_c1,'->',c1),c3,
+ case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+truncate table t1;
+insert into t1 select * from tmp;
+
+--echo #
+--echo # Update with order by
+--echo #
+
+analyze table t1 persistent for all;
+let $c = exists (select 'X' from t1 a where a.c2 = t1.c2)
+ and c2 >= 3 order by c2;
+let $q = update t1 set c1=c1+10 where $c;
+eval explain select * from t1 where $c;
+eval explain $q;
+--enable_info ONCE
+eval $q;
+select concat(old_c1,'->',c1),c3,
+ case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+truncate table t1;
+insert into t1 select * from tmp;
+
+--echo #
+--echo # Update with a reference to view in subquery
+--echo # in settable value
+--echo #
+
+analyze table t1 persistent for all;
+let $q = update t1 set c1=c1 +(select max(a.c2) from v1 a
+ where a.c1 = t1.c1);
+eval explain select * from t1;
+eval explain $q;
+--enable_info ONCE
+eval $q;
+select concat(old_c1,'->',c1),c3,
+ case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+truncate table t1;
+insert into t1 select * from tmp;
+
+--echo #
+--echo # Update view
+--echo #
+
+analyze table t1 persistent for all;
+let $q = update v1 set c1=c1 + (select max(a.c2) from t1 a
+ where a.c1 = v1.c1) +10 where c3 > 3;
+eval explain select * from v1;
+eval explain $q;
+--enable_info ONCE
+eval $q;
+select concat(old_c1,'->',c1),c3,
+ case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+truncate table t1;
+insert into t1 select * from tmp;
+
+--echo #
+--echo # Update view with reference to the same view in subquery
+--echo #
+
+analyze table t1 persistent for all;
+let $c = c1 <2
+ and exists (select 'X' from v1 a where a.c1 = v1.c1);
+let $q = update v1 set c1=c1 + 1 where $c;
+eval explain select * from v1 where $c;
+eval explain $q;
+--enable_info ONCE
+eval $q;
+select concat(old_c1,'->',c1),c3,
+ case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+truncate table t1;
+insert into t1 select * from tmp;
+
+--echo #
+--echo # Update view with EXISTS and reference to the same view in subquery
+--echo #
+
+analyze table t1 persistent for all;
+let $c = c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
+let $q = update v1
+ set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1)
+ where $c;
+eval explain select * from v1 where $c;
+eval explain $q;
+--enable_info ONCE
+eval $q;
+select concat(old_c1,'->',c1),c3,
+ case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+truncate table t1;
+insert into t1 select * from tmp;
+
+--echo #
+--echo # Update with IN predicand over the updated table in WHERE
+--echo #
+
+analyze table t1 persistent for all;
+let $c = c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+let $q = update t1 set c3=c3+110 where $c;
+eval explain select * from t1 where $c;
+eval explain $q;
+--enable_info ONCE
+eval $q;
+--sorted_result
+select c3 from t1;
+truncate table t1;
+insert into t1 select * from tmp;
+
+--echo #
+--echo # Update with a limit
+--echo #
+
+analyze table t1 persistent for all;
+let $q = update t1
+ set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2;
+eval explain select * from t1 limit 2;
+eval explain $q;
+--enable_info ONCE
+eval $q;
+select concat(old_c1,'->',c1),c3,
+ case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+truncate table t1;
+insert into t1 select * from tmp;
+
+--echo #
+--echo # Update with a limit and an order by
+--echo #
+
+analyze table t1 persistent for all;
+let $q=update t1
+ set c1=(select a.c3 from t1 a where a.c3 = t1.c3)
+ order by c3 desc limit 2;
+eval explain select * from t1 order by c3 desc limit 2;
+eval explain $q;
+--enable_info ONCE
+eval $q;
+select concat(old_c1,'->',c1),c3,
+ case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+truncate table t1;
+insert into t1 select * from tmp;
diff --git a/mysql-test/include/update_use_source_ext.inc b/mysql-test/include/update_use_source_ext.inc
new file mode 100644
index 00000000000..004f7a96fd5
--- /dev/null
+++ b/mysql-test/include/update_use_source_ext.inc
@@ -0,0 +1,59 @@
+--echo #
+--echo # Test on dynamic columns (blob)
+--echo #
+
+create table assets (
+ item_name varchar(32) primary key, -- A common attribute for all items
+ dynamic_cols blob -- Dynamic columns will be stored here
+);
+INSERT INTO assets VALUES ('MariaDB T-shirt',
+ COLUMN_CREATE('color', 'blue', 'size', 'XL'));
+INSERT INTO assets VALUES ('Thinkpad Laptop',
+ COLUMN_CREATE('color', 'black', 'price', 500));
+SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color
+ FROM assets;
+UPDATE assets
+ SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty', '3 years')
+ WHERE item_name='Thinkpad Laptop';
+SELECT item_name,
+ COLUMN_GET(dynamic_cols, 'warranty' as char) AS color
+ FROM assets;
+UPDATE assets
+ SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty', '4 years')
+ WHERE item_name in
+ (select b.item_name from assets b
+ where COLUMN_GET(b.dynamic_cols, 'color' as char) ='black');
+SELECT item_name,
+ COLUMN_GET(dynamic_cols, 'warranty' as char) AS color
+ FROM assets;
+
+UPDATE assets SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty',
+ (select COLUMN_GET(b.dynamic_cols, 'color' as char)
+ from assets b
+ where assets.item_name = item_name));
+SELECT item_name,
+ COLUMN_GET(dynamic_cols, 'warranty' as char) AS color
+ FROM assets;
+drop table assets;
+
+--echo #
+--echo # Test on fulltext columns
+--echo #
+CREATE TABLE ft2(copy TEXT,FULLTEXT(copy));
+INSERT INTO ft2(copy) VALUES
+ ('MySQL vs MariaDB database'),
+ ('Oracle vs MariaDB database'),
+ ('PostgreSQL vs MariaDB database'),
+ ('MariaDB overview'),
+ ('Foreign keys'),
+ ('Primary keys'),
+ ('Indexes'),
+ ('Transactions'),
+ ('Triggers');
+SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('database');
+
+update ft2 set copy = (select max(concat('mykeyword ',substr(b.copy,1,5)))
+ from ft2 b WHERE MATCH(b.copy) AGAINST('database'))
+ where MATCH(copy) AGAINST('keys');
+SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('mykeyword');
+drop table ft2;
diff --git a/mysql-test/main/delete_single_to_multi.result b/mysql-test/main/delete_single_to_multi.result
index eba4ca87167..57cc224203a 100644
--- a/mysql-test/main/delete_single_to_multi.result
+++ b/mysql-test/main/delete_single_to_multi.result
@@ -3419,4 +3419,834 @@ o_orderkey o_totalprice
4903 34363.63
5607 24660.06
drop table t;
+CREATE TABLE partsupp_small (
+ps_partkey int(11) NOT NULL DEFAULT '0',
+ps_suppkey int(11) NOT NULL DEFAULT '0',
+ps_availqty int(11) DEFAULT NULL,
+ps_supplycost double DEFAULT NULL,
+ps_comment varchar(199) DEFAULT NULL,
+PRIMARY KEY (ps_partkey,ps_suppkey),
+KEY i_ps_partkey (ps_partkey),
+KEY i_ps_suppkey (ps_suppkey)
+);
+create index i_ps_sup_part on partsupp_small(ps_suppkey, ps_partkey);
+insert into partsupp_small select * from partsupp where ps_partkey <50;
+analyze table partsupp_small persistent for all;
+Table Op Msg_type Msg_text
+dbt3_s001.partsupp_small analyze status Engine-independent statistics collected
+dbt3_s001.partsupp_small analyze status OK
+# LooseScan
+# =========
+explain
+select count(*) from lineitem where l_partkey in
+(select ps_partkey from partsupp_small
+where ps_suppkey in (1,2,3));
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY partsupp_small index PRIMARY,i_ps_partkey,i_ps_suppkey,i_ps_sup_part PRIMARY 8 NULL 176 Using where; Using index; LooseScan
+1 PRIMARY lineitem ref i_l_suppkey_partkey,i_l_partkey i_l_partkey 5 dbt3_s001.partsupp_small.ps_partkey 30 Using index
+explain format=json
+select count(*) from lineitem where l_partkey in
+(select ps_partkey from partsupp_small
+where ps_suppkey in (1,2,3));
+EXPLAIN
+{
+ "query_block": {
+ "select_id": 1,
+ "cost": 0.222764041,
+ "nested_loop": [
+ {
+ "table": {
+ "table_name": "partsupp_small",
+ "access_type": "index",
+ "possible_keys": [
+ "PRIMARY",
+ "i_ps_partkey",
+ "i_ps_suppkey",
+ "i_ps_sup_part"
+ ],
+ "key": "PRIMARY",
+ "key_length": "8",
+ "used_key_parts": ["ps_partkey", "ps_suppkey"],
+ "loops": 1,
+ "rows": 176,
+ "cost": 0.019403477,
+ "filtered": 23.86363602,
+ "attached_condition": "partsupp_small.ps_suppkey in (1,2,3)",
+ "using_index": true,
+ "loose_scan": true
+ }
+ },
+ {
+ "table": {
+ "table_name": "lineitem",
+ "access_type": "ref",
+ "possible_keys": ["i_l_suppkey_partkey", "i_l_partkey"],
+ "key": "i_l_partkey",
+ "key_length": "5",
+ "used_key_parts": ["l_partkey"],
+ "ref": ["dbt3_s001.partsupp_small.ps_partkey"],
+ "loops": 42,
+ "rows": 30,
+ "cost": 0.203360564,
+ "filtered": 2.380952358,
+ "using_index": true
+ }
+ }
+ ]
+ }
+}
+explain
+select l_partkey from lineitem where l_partkey in
+(select ps_partkey from partsupp_small
+where ps_suppkey in (1,2,3));
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY partsupp_small index PRIMARY,i_ps_partkey,i_ps_suppkey,i_ps_sup_part PRIMARY 8 NULL 176 Using where; Using index; LooseScan
+1 PRIMARY lineitem ref i_l_suppkey_partkey,i_l_partkey i_l_partkey 5 dbt3_s001.partsupp_small.ps_partkey 30 Using index
+explain format=json
+select l_partkey from lineitem where l_partkey in
+(select ps_partkey from partsupp_small
+where ps_suppkey in (1,2,3));
+EXPLAIN
+{
+ "query_block": {
+ "select_id": 1,
+ "cost": 0.222764041,
+ "nested_loop": [
+ {
+ "table": {
+ "table_name": "partsupp_small",
+ "access_type": "index",
+ "possible_keys": [
+ "PRIMARY",
+ "i_ps_partkey",
+ "i_ps_suppkey",
+ "i_ps_sup_part"
+ ],
+ "key": "PRIMARY",
+ "key_length": "8",
+ "used_key_parts": ["ps_partkey", "ps_suppkey"],
+ "loops": 1,
+ "rows": 176,
+ "cost": 0.019403477,
+ "filtered": 23.86363602,
+ "attached_condition": "partsupp_small.ps_suppkey in (1,2,3)",
+ "using_index": true,
+ "loose_scan": true
+ }
+ },
+ {
+ "table": {
+ "table_name": "lineitem",
+ "access_type": "ref",
+ "possible_keys": ["i_l_suppkey_partkey", "i_l_partkey"],
+ "key": "i_l_partkey",
+ "key_length": "5",
+ "used_key_parts": ["l_partkey"],
+ "ref": ["dbt3_s001.partsupp_small.ps_partkey"],
+ "loops": 42,
+ "rows": 30,
+ "cost": 0.203360564,
+ "filtered": 2.380952358,
+ "using_index": true
+ }
+ }
+ ]
+ }
+}
+select count(*) from lineitem where l_partkey in
+(select ps_partkey from partsupp_small
+where ps_suppkey in (1,2,3));
+count(*)
+1175
+create table t as
+select * from lineitem where l_partkey in
+(select ps_partkey from partsupp_small
+where ps_suppkey in (1,2,3));
+explain
+delete from lineitem where l_partkey in
+(select ps_partkey from partsupp_small
+where ps_suppkey in (1,2,3));
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY partsupp_small index PRIMARY,i_ps_partkey,i_ps_suppkey,i_ps_sup_part PRIMARY 8 NULL 176 Using where; Using index; LooseScan
+1 PRIMARY lineitem ref i_l_suppkey_partkey,i_l_partkey i_l_partkey 5 dbt3_s001.partsupp_small.ps_partkey 30
+explain format=json
+delete from lineitem where l_partkey in
+(select ps_partkey from partsupp_small
+where ps_suppkey in (1,2,3));
+EXPLAIN
+{
+ "query_block": {
+ "select_id": 1,
+ "cost": 0.222764041,
+ "nested_loop": [
+ {
+ "table": {
+ "table_name": "partsupp_small",
+ "access_type": "index",
+ "possible_keys": [
+ "PRIMARY",
+ "i_ps_partkey",
+ "i_ps_suppkey",
+ "i_ps_sup_part"
+ ],
+ "key": "PRIMARY",
+ "key_length": "8",
+ "used_key_parts": ["ps_partkey", "ps_suppkey"],
+ "loops": 1,
+ "rows": 176,
+ "cost": 0.019403477,
+ "filtered": 23.86363602,
+ "attached_condition": "partsupp_small.ps_suppkey in (1,2,3)",
+ "using_index": true,
+ "loose_scan": true
+ }
+ },
+ {
+ "table": {
+ "table_name": "lineitem",
+ "access_type": "ref",
+ "possible_keys": ["i_l_suppkey_partkey", "i_l_partkey"],
+ "key": "i_l_partkey",
+ "key_length": "5",
+ "used_key_parts": ["l_partkey"],
+ "ref": ["dbt3_s001.partsupp_small.ps_partkey"],
+ "loops": 42,
+ "rows": 30,
+ "cost": 0.203360564,
+ "filtered": 2.380952358
+ }
+ }
+ ]
+ }
+}
+delete from lineitem where l_partkey in
+(select ps_partkey from partsupp_small
+where ps_suppkey in (1,2,3));
+select count(*) from lineitem where l_partkey in
+(select ps_partkey from partsupp_small
+where ps_suppkey in (1,2,3));
+count(*)
+0
+insert into lineitem select * from t;
+select count(*) from lineitem where l_partkey in
+(select ps_partkey from partsupp_small
+where ps_suppkey in (1,2,3));
+count(*)
+1175
+drop table t;
+# LooseScan PS
+# ============
+prepare stmt from "
+delete from lineitem where l_partkey in
+(select ps_partkey from partsupp_small
+where ps_suppkey in (1,2,3));
+";
+select count(*) from lineitem where l_partkey in
+(select ps_partkey from partsupp_small
+where ps_suppkey in (1,2,3));
+count(*)
+1175
+create table t as
+select * from lineitem where l_partkey in
+(select ps_partkey from partsupp_small
+where ps_suppkey in (1,2,3));
+execute stmt;
+select count(*) from lineitem where l_partkey in
+(select ps_partkey from partsupp_small
+where ps_suppkey in (1,2,3));
+count(*)
+0
+insert into lineitem select * from t;
+select count(*) from lineitem where l_partkey in
+(select ps_partkey from partsupp_small
+where ps_suppkey in (1,2,3));
+count(*)
+1175
+create table r as
+select * from lineitem where l_partkey in
+(select ps_partkey from partsupp_small
+where ps_suppkey in (1,2,3));
+execute stmt;
+select count(*) from lineitem where l_partkey in
+(select ps_partkey from partsupp_small
+where ps_suppkey in (1,2,3));
+count(*)
+0
+insert into lineitem select * from r;
+select count(*) from lineitem where l_partkey in
+(select ps_partkey from partsupp_small
+where ps_suppkey in (1,2,3));
+count(*)
+1175
+drop tables r, t;
+deallocate prepare stmt;
+# LooseScan SP
+# ============
+create procedure p()
+delete from lineitem where l_partkey in
+(select ps_partkey from partsupp_small
+where ps_suppkey in (1,2,3));
+select count(*) from lineitem where l_partkey in
+(select ps_partkey from partsupp_small
+where ps_suppkey in (1,2,3));
+count(*)
+1175
+create table t as
+select * from lineitem where l_partkey in
+(select ps_partkey from partsupp_small
+where ps_suppkey in (1,2,3));
+call p();
+select count(*) from lineitem where l_partkey in
+(select ps_partkey from partsupp_small
+where ps_suppkey in (1,2,3));
+count(*)
+0
+insert into lineitem select * from t;
+select count(*) from lineitem where l_partkey in
+(select ps_partkey from partsupp_small
+where ps_suppkey in (1,2,3));
+count(*)
+1175
+create table r as
+select * from lineitem where l_partkey in
+(select ps_partkey from partsupp_small
+where ps_suppkey in (1,2,3));
+call p();
+select count(*) from lineitem where l_partkey in
+(select ps_partkey from partsupp_small
+where ps_suppkey in (1,2,3));
+count(*)
+0
+insert into lineitem select * from r;
+select count(*) from lineitem where l_partkey in
+(select ps_partkey from partsupp_small
+where ps_suppkey in (1,2,3));
+count(*)
+1175
+drop tables r, t;
+drop procedure p;
+# DuplicateWeedout
+# ================
+set @tmp_optimizer_switch= @@optimizer_switch;
+set optimizer_switch='materialization=off';
+analyze table lineitem;
+Table Op Msg_type Msg_text
+dbt3_s001.lineitem analyze status Engine-independent statistics collected
+dbt3_s001.lineitem analyze status OK
+analyze table orders;
+Table Op Msg_type Msg_text
+dbt3_s001.orders analyze status Engine-independent statistics collected
+dbt3_s001.orders analyze status OK
+explain
+select count(*) from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY supplier range PRIMARY PRIMARY 4 NULL 1 Using where; Using index; Start temporary
+1 PRIMARY partsupp_small ref PRIMARY,i_ps_partkey,i_ps_suppkey,i_ps_sup_part i_ps_sup_part 4 dbt3_s001.supplier.s_suppkey 17 Using where; Using index
+1 PRIMARY lineitem ref i_l_suppkey_partkey,i_l_partkey i_l_suppkey_partkey 5 dbt3_s001.partsupp_small.ps_partkey 30 Using index
+1 PRIMARY lineitem ref i_l_suppkey_partkey,i_l_partkey i_l_partkey 5 dbt3_s001.partsupp_small.ps_partkey 30 Using index; End temporary
+explain format=json
+select count(*) from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+EXPLAIN
+{
+ "query_block": {
+ "select_id": 1,
+ "cost": 4.129940741,
+ "nested_loop": [
+ {
+ "duplicates_removal": [
+ {
+ "table": {
+ "table_name": "supplier",
+ "access_type": "range",
+ "possible_keys": ["PRIMARY"],
+ "key": "PRIMARY",
+ "key_length": "4",
+ "used_key_parts": ["s_suppkey"],
+ "loops": 1,
+ "rows": 1,
+ "cost": 0.001478954,
+ "filtered": 100,
+ "attached_condition": "supplier.s_suppkey < 2",
+ "using_index": true
+ }
+ },
+ {
+ "table": {
+ "table_name": "partsupp_small",
+ "access_type": "ref",
+ "possible_keys": [
+ "PRIMARY",
+ "i_ps_partkey",
+ "i_ps_suppkey",
+ "i_ps_sup_part"
+ ],
+ "key": "i_ps_sup_part",
+ "key_length": "4",
+ "used_key_parts": ["ps_suppkey"],
+ "ref": ["dbt3_s001.supplier.s_suppkey"],
+ "loops": 1,
+ "rows": 17,
+ "cost": 0.003160332,
+ "filtered": 79.54545593,
+ "attached_condition": "partsupp_small.ps_partkey is not null",
+ "using_index": true
+ }
+ },
+ {
+ "table": {
+ "table_name": "lineitem",
+ "access_type": "ref",
+ "possible_keys": ["i_l_suppkey_partkey", "i_l_partkey"],
+ "key": "i_l_suppkey_partkey",
+ "key_length": "5",
+ "used_key_parts": ["l_partkey"],
+ "ref": ["dbt3_s001.partsupp_small.ps_partkey"],
+ "loops": 14,
+ "rows": 30,
+ "cost": 0.069152188,
+ "filtered": 100,
+ "using_index": true
+ }
+ },
+ {
+ "table": {
+ "table_name": "lineitem",
+ "access_type": "ref",
+ "possible_keys": ["i_l_suppkey_partkey", "i_l_partkey"],
+ "key": "i_l_partkey",
+ "key_length": "5",
+ "used_key_parts": ["l_partkey"],
+ "ref": ["dbt3_s001.partsupp_small.ps_partkey"],
+ "loops": 420.35,
+ "rows": 30,
+ "cost": 1.994712365,
+ "filtered": 0.237896994,
+ "using_index": true
+ }
+ }
+ ]
+ }
+ ]
+ }
+}
+explain
+select l_partkey from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY supplier range PRIMARY PRIMARY 4 NULL 1 Using where; Using index; Start temporary
+1 PRIMARY partsupp_small ref PRIMARY,i_ps_partkey,i_ps_suppkey,i_ps_sup_part i_ps_sup_part 4 dbt3_s001.supplier.s_suppkey 17 Using where; Using index
+1 PRIMARY lineitem ref i_l_suppkey_partkey,i_l_partkey i_l_suppkey_partkey 5 dbt3_s001.partsupp_small.ps_partkey 30 Using index
+1 PRIMARY lineitem ref i_l_suppkey_partkey,i_l_partkey i_l_partkey 5 dbt3_s001.partsupp_small.ps_partkey 30 Using index; End temporary
+explain format=json
+select l_partkey from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+EXPLAIN
+{
+ "query_block": {
+ "select_id": 1,
+ "cost": 4.129940741,
+ "nested_loop": [
+ {
+ "duplicates_removal": [
+ {
+ "table": {
+ "table_name": "supplier",
+ "access_type": "range",
+ "possible_keys": ["PRIMARY"],
+ "key": "PRIMARY",
+ "key_length": "4",
+ "used_key_parts": ["s_suppkey"],
+ "loops": 1,
+ "rows": 1,
+ "cost": 0.001478954,
+ "filtered": 100,
+ "attached_condition": "supplier.s_suppkey < 2",
+ "using_index": true
+ }
+ },
+ {
+ "table": {
+ "table_name": "partsupp_small",
+ "access_type": "ref",
+ "possible_keys": [
+ "PRIMARY",
+ "i_ps_partkey",
+ "i_ps_suppkey",
+ "i_ps_sup_part"
+ ],
+ "key": "i_ps_sup_part",
+ "key_length": "4",
+ "used_key_parts": ["ps_suppkey"],
+ "ref": ["dbt3_s001.supplier.s_suppkey"],
+ "loops": 1,
+ "rows": 17,
+ "cost": 0.003160332,
+ "filtered": 79.54545593,
+ "attached_condition": "partsupp_small.ps_partkey is not null",
+ "using_index": true
+ }
+ },
+ {
+ "table": {
+ "table_name": "lineitem",
+ "access_type": "ref",
+ "possible_keys": ["i_l_suppkey_partkey", "i_l_partkey"],
+ "key": "i_l_suppkey_partkey",
+ "key_length": "5",
+ "used_key_parts": ["l_partkey"],
+ "ref": ["dbt3_s001.partsupp_small.ps_partkey"],
+ "loops": 14,
+ "rows": 30,
+ "cost": 0.069152188,
+ "filtered": 100,
+ "using_index": true
+ }
+ },
+ {
+ "table": {
+ "table_name": "lineitem",
+ "access_type": "ref",
+ "possible_keys": ["i_l_suppkey_partkey", "i_l_partkey"],
+ "key": "i_l_partkey",
+ "key_length": "5",
+ "used_key_parts": ["l_partkey"],
+ "ref": ["dbt3_s001.partsupp_small.ps_partkey"],
+ "loops": 420.35,
+ "rows": 30,
+ "cost": 1.994712365,
+ "filtered": 0.237896994,
+ "using_index": true
+ }
+ }
+ ]
+ }
+ ]
+ }
+}
+select count(*) from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+count(*)
+471
+create table t as
+select * from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+explain
+delete from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY supplier range PRIMARY PRIMARY 4 NULL 1 Using where; Using index; Start temporary
+1 PRIMARY partsupp_small ref PRIMARY,i_ps_partkey,i_ps_suppkey,i_ps_sup_part i_ps_sup_part 4 dbt3_s001.supplier.s_suppkey 17 Using where; Using index
+1 PRIMARY lineitem ref i_l_suppkey_partkey,i_l_partkey i_l_suppkey_partkey 5 dbt3_s001.partsupp_small.ps_partkey 30
+1 PRIMARY lineitem ref i_l_suppkey_partkey,i_l_partkey i_l_partkey 5 dbt3_s001.partsupp_small.ps_partkey 30 Using index; End temporary
+explain format=json
+delete from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+EXPLAIN
+{
+ "query_block": {
+ "select_id": 1,
+ "cost": 4.129940741,
+ "nested_loop": [
+ {
+ "duplicates_removal": [
+ {
+ "table": {
+ "table_name": "supplier",
+ "access_type": "range",
+ "possible_keys": ["PRIMARY"],
+ "key": "PRIMARY",
+ "key_length": "4",
+ "used_key_parts": ["s_suppkey"],
+ "loops": 1,
+ "rows": 1,
+ "cost": 0.001478954,
+ "filtered": 100,
+ "attached_condition": "supplier.s_suppkey < 2",
+ "using_index": true
+ }
+ },
+ {
+ "table": {
+ "table_name": "partsupp_small",
+ "access_type": "ref",
+ "possible_keys": [
+ "PRIMARY",
+ "i_ps_partkey",
+ "i_ps_suppkey",
+ "i_ps_sup_part"
+ ],
+ "key": "i_ps_sup_part",
+ "key_length": "4",
+ "used_key_parts": ["ps_suppkey"],
+ "ref": ["dbt3_s001.supplier.s_suppkey"],
+ "loops": 1,
+ "rows": 17,
+ "cost": 0.003160332,
+ "filtered": 79.54545593,
+ "attached_condition": "partsupp_small.ps_partkey is not null",
+ "using_index": true
+ }
+ },
+ {
+ "table": {
+ "table_name": "lineitem",
+ "access_type": "ref",
+ "possible_keys": ["i_l_suppkey_partkey", "i_l_partkey"],
+ "key": "i_l_suppkey_partkey",
+ "key_length": "5",
+ "used_key_parts": ["l_partkey"],
+ "ref": ["dbt3_s001.partsupp_small.ps_partkey"],
+ "loops": 14,
+ "rows": 30,
+ "cost": 0.069152188,
+ "filtered": 100
+ }
+ },
+ {
+ "table": {
+ "table_name": "lineitem",
+ "access_type": "ref",
+ "possible_keys": ["i_l_suppkey_partkey", "i_l_partkey"],
+ "key": "i_l_partkey",
+ "key_length": "5",
+ "used_key_parts": ["l_partkey"],
+ "ref": ["dbt3_s001.partsupp_small.ps_partkey"],
+ "loops": 420.35,
+ "rows": 30,
+ "cost": 1.994712365,
+ "filtered": 0.237896994,
+ "using_index": true
+ }
+ }
+ ]
+ }
+ ]
+ }
+}
+delete from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+select count(*) from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+count(*)
+0
+insert into lineitem select * from t;
+select count(*) from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+count(*)
+471
+drop table t;
+# DuplicateWeedout PS
+# ===================
+prepare stmt from "
+delete from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+";
+select count(*) from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+count(*)
+471
+create table t as
+select * from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+execute stmt;
+select count(*) from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+count(*)
+0
+insert into lineitem select * from t;
+select count(*) from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+count(*)
+471
+create table r as
+select * from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+execute stmt;
+select count(*) from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+count(*)
+0
+insert into lineitem select * from r;
+select count(*) from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+count(*)
+471
+drop tables r, t;
+deallocate prepare stmt;
+# DuplicateWeedout SP
+# ===================
+create procedure p()
+delete from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+select count(*) from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+count(*)
+471
+create table t as
+select * from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+call p();
+select count(*) from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+count(*)
+0
+insert into lineitem select * from t;
+select count(*) from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+count(*)
+471
+create table r as
+select * from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+call p();
+select count(*) from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+count(*)
+0
+insert into lineitem select * from r;
+select count(*) from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+count(*)
+471
+drop tables r, t;
+drop procedure p;
+set @@optimizer_switch=@tmp_optimizer_switch;
+drop table partsupp_small;
DROP DATABASE dbt3_s001;
diff --git a/mysql-test/main/delete_single_to_multi.test b/mysql-test/main/delete_single_to_multi.test
index 2829ae125c2..31f1d157096 100644
--- a/mysql-test/main/delete_single_to_multi.test
+++ b/mysql-test/main/delete_single_to_multi.test
@@ -822,4 +822,248 @@ eval
select o_orderkey, o_totalprice from orders where $c11;
drop table t;
+
+CREATE TABLE partsupp_small (
+ ps_partkey int(11) NOT NULL DEFAULT '0',
+ ps_suppkey int(11) NOT NULL DEFAULT '0',
+ ps_availqty int(11) DEFAULT NULL,
+ ps_supplycost double DEFAULT NULL,
+ ps_comment varchar(199) DEFAULT NULL,
+ PRIMARY KEY (ps_partkey,ps_suppkey),
+ KEY i_ps_partkey (ps_partkey),
+ KEY i_ps_suppkey (ps_suppkey)
+);
+
+create index i_ps_sup_part on partsupp_small(ps_suppkey, ps_partkey);
+insert into partsupp_small select * from partsupp where ps_partkey <50;
+analyze table partsupp_small persistent for all;
+
+--echo # LooseScan
+--echo # =========
+
+let $c12 = l_partkey in
+ (select ps_partkey from partsupp_small
+ where ps_suppkey in (1,2,3));
+
+eval
+explain
+select count(*) from lineitem where $c12;
+eval
+explain format=json
+select count(*) from lineitem where $c12;
+eval
+explain
+select l_partkey from lineitem where $c12;
+eval
+explain format=json
+select l_partkey from lineitem where $c12;
+eval
+select count(*) from lineitem where $c12;
+eval
+create table t as
+select * from lineitem where $c12;
+
+eval
+explain
+delete from lineitem where $c12;
+eval
+explain format=json
+delete from lineitem where $c12;
+eval
+delete from lineitem where $c12;
+eval
+select count(*) from lineitem where $c12;
+
+insert into lineitem select * from t;
+eval
+select count(*) from lineitem where $c12;
+
+drop table t;
+
+--echo # LooseScan PS
+--echo # ============
+
+eval
+prepare stmt from "
+delete from lineitem where $c12;
+";
+
+eval
+select count(*) from lineitem where $c12;
+eval
+create table t as
+select * from lineitem where $c12;
+execute stmt;
+eval
+select count(*) from lineitem where $c12;
+insert into lineitem select * from t;
+eval
+select count(*) from lineitem where $c12;
+
+eval
+create table r as
+select * from lineitem where $c12;
+execute stmt;
+eval
+select count(*) from lineitem where $c12;
+insert into lineitem select * from r;
+eval
+select count(*) from lineitem where $c12;
+
+drop tables r, t;
+deallocate prepare stmt;
+
+--echo # LooseScan SP
+--echo # ============
+
+eval
+create procedure p()
+delete from lineitem where $c12;
+
+eval
+select count(*) from lineitem where $c12;
+eval
+create table t as
+select * from lineitem where $c12;
+call p();
+eval
+select count(*) from lineitem where $c12;
+insert into lineitem select * from t;
+eval
+select count(*) from lineitem where $c12;
+
+eval
+create table r as
+select * from lineitem where $c12;
+call p();
+eval
+select count(*) from lineitem where $c12;
+insert into lineitem select * from r;
+eval
+select count(*) from lineitem where $c12;
+
+drop tables r, t;
+drop procedure p;
+
+--echo # DuplicateWeedout
+--echo # ================
+
+set @tmp_optimizer_switch= @@optimizer_switch;
+set optimizer_switch='materialization=off';
+
+analyze table lineitem;
+analyze table orders;
+
+let $c13 = l_partkey in (
+ select ps_partkey
+ from partsupp_small join lineitem on ps_partkey=l_partkey
+ where ps_suppkey in (
+ select s_suppkey from supplier where s_suppkey < 2
+ )
+);
+
+eval
+explain
+select count(*) from lineitem where $c13;
+eval
+explain format=json
+select count(*) from lineitem where $c13;
+eval
+explain
+select l_partkey from lineitem where $c13;
+eval
+explain format=json
+select l_partkey from lineitem where $c13;
+eval
+select count(*) from lineitem where $c13;
+eval
+create table t as
+select * from lineitem where $c13;
+
+eval
+explain
+delete from lineitem where $c13;
+eval
+explain format=json
+delete from lineitem where $c13;
+eval
+delete from lineitem where $c13;
+eval
+select count(*) from lineitem where $c13;
+
+insert into lineitem select * from t;
+eval
+select count(*) from lineitem where $c13;
+
+drop table t;
+
+--echo # DuplicateWeedout PS
+--echo # ===================
+
+eval
+prepare stmt from "
+delete from lineitem where $c13;
+";
+
+eval
+select count(*) from lineitem where $c13;
+eval
+create table t as
+select * from lineitem where $c13;
+execute stmt;
+eval
+select count(*) from lineitem where $c13;
+insert into lineitem select * from t;
+eval
+select count(*) from lineitem where $c13;
+
+eval
+create table r as
+select * from lineitem where $c13;
+execute stmt;
+eval
+select count(*) from lineitem where $c13;
+insert into lineitem select * from r;
+eval
+select count(*) from lineitem where $c13;
+
+drop tables r, t;
+deallocate prepare stmt;
+
+--echo # DuplicateWeedout SP
+--echo # ===================
+
+eval
+create procedure p()
+delete from lineitem where $c13;
+
+eval
+select count(*) from lineitem where $c13;
+eval
+create table t as
+select * from lineitem where $c13;
+call p();
+eval
+select count(*) from lineitem where $c13;
+insert into lineitem select * from t;
+eval
+select count(*) from lineitem where $c13;
+
+eval
+create table r as
+select * from lineitem where $c13;
+call p();
+eval
+select count(*) from lineitem where $c13;
+insert into lineitem select * from r;
+eval
+select count(*) from lineitem where $c13;
+
+drop tables r, t;
+drop procedure p;
+
+set @@optimizer_switch=@tmp_optimizer_switch;
+
+drop table partsupp_small;
+
DROP DATABASE dbt3_s001;
diff --git a/mysql-test/main/delete_use_source_engines.result b/mysql-test/main/delete_use_source_engines.result
new file mode 100644
index 00000000000..fd0d3b8dbe0
--- /dev/null
+++ b/mysql-test/main/delete_use_source_engines.result
@@ -0,0 +1,8870 @@
+set @save_default_engine=@@default_storage_engine;
+#######################################
+# #
+# Engine InnoDB #
+# #
+#######################################
+set global innodb_stats_persistent=1;
+set default_storage_engine=InnoDB;
+create table t1 (c1 integer, c2 integer, c3 integer);
+insert into t1(c1,c2,c3)
+values (1,1,1),(1,2,2),(1,3,3),
+(2,1,4),(2,2,5),(2,3,6),
+(2,4,7),(2,5,8);
+insert into t1 select c1+10,c2,c3+10 from t1;
+insert into t1 select c1+20,c2+1,c3+20 from t1;
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create view v1 as select * from t1 where c2=2;
+#######################################
+# Test without any index #
+#######################################
+#
+# Delete with value from subquery on the same table
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+explain select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+explain delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+affected rows: 4
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with EXISTS subquery over the updated table
+# in WHERE + possibly sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+explain select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+analyze delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 9.38 9.38 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 12.00 100.00 5.56 Using where; FirstMatch(t1)
+select * from t1;
+c1 c2 c3
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with IN predicand over the updated table in WHERE
+#
+create table tmp as select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+explain select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+affected rows: 8
+select * from t1;
+c1 c2 c3
+1 3 3
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with a limit - can be deleted
+#
+create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+explain select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+analyze delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 100.00 12.50 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 24.50 100.00 1.02 Using where; FirstMatch(t1)
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with a limit and an order by
+#
+create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+explain select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using temporary; Using filesort
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+affected rows: 1
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete: 2 execution of PS
+#
+prepare create_tmp_stmt from
+"create table tmp as select * from t1
+ where c2=(select a.c3 from t1 a where a.c3 = ?)";
+prepare delete_t1_stmt from
+"delete from t1 where c2=(select a.c3 from t1 a where a.c3 = ?)";
+set @a:=5;
+execute create_tmp_stmt using @a;
+execute delete_t1_stmt using @a;
+execute delete_t1_stmt using @a;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 6 38
+prepare insert_tmp_stmt from
+"insert into tmp(c1,c2,c3) select * from t1
+ where c2=(select a.c3 from t1 a where a.c3 = ?)";
+set @a:=2;
+execute insert_tmp_stmt using @a;
+execute delete_t1_stmt using @a;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 3 3
+11 1 11
+11 3 13
+12 1 14
+12 3 16
+12 4 17
+2 1 4
+2 3 6
+2 4 7
+21 3 22
+21 4 23
+22 3 25
+22 4 26
+22 6 28
+31 3 32
+31 4 33
+32 3 35
+32 4 36
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+drop table tmp;
+#
+# Delete in stored procedure
+#
+create procedure sp()
+begin
+delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+end
+//
+create table tmp as select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+insert into tmp(c1,c2,c3) select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+insert into tmp(c1,c2,c3) select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop procedure sp;
+drop table tmp;
+#
+# Delete in stored function
+#
+create function f1(IN a INT) returns int
+begin
+delete from t1 where c3 < a order by c3 limit 1;
+return 1;
+end;//
+set @a:=7;
+create table tmp as select * from t1 where c3 < @a
+order by c3 limit 1;
+select f1(@a);
+f1(@a)
+1
+insert into tmp(c1,c2,c3) select * from t1 where c3 < @a
+order by c3 limit 1;
+select f1(@a);
+f1(@a)
+1
+select * from t1;
+c1 c2 c3
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop function f1;
+drop table tmp;
+#
+# Delete in trigger
+#
+create table t2 (c1 integer);
+insert into t2(c1) values (1), (2), (3), (4), (5), (6), (7), (8);
+CREATE TABLE cnt(del integer);
+INSERT INTO cnt VALUES(0);
+CREATE TRIGGER tr1 AFTER DELETE ON t1 FOR EACH ROW
+UPDATE cnt SET del=del+1;
+CREATE TRIGGER tr2 AFTER DELETE ON t1 FOR EACH ROW
+DELETE FROM t2 WHERE c1> (SELECT count(*)-1 FROM t2);
+CREATE TABLE tmp as SELECT * FROM t1 WHERE c2>=3;
+DELETE FROM t1 WHERE c2>=3;
+affected rows: 20
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+11 1 11
+11 2 12
+12 1 14
+12 2 15
+2 1 4
+2 2 5
+21 2 21
+22 2 24
+31 2 31
+32 2 34
+SELECT * FROM t2;
+c1
+SELECT * FROM cnt;
+del
+20
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+DROP TRIGGER tr1;
+DROP TRIGGER tr2;
+drop table t2, cnt, tmp;
+#
+# Delete with a reference to view in subquery
+#
+create table tmp as select * from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+explain select * from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+explain delete from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+analyze delete from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 100.00 25.00 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 32.00 25.00 3.12 Using where
+select * from t1;
+c1 c2 c3
+1 1 1
+1 3 3
+11 1 11
+11 3 13
+12 1 14
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 3 22
+21 4 23
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 3 32
+31 4 33
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#######################################
+# Test with an index #
+#######################################
+create index t1_c2 on t1 (c2,c1);
+#
+# Delete with value from subquery on the same table
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+explain select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+explain delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+affected rows: 4
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with EXISTS subquery over the updated table
+# in WHERE + possibly sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+explain select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+1 PRIMARY a index NULL t1_c2 10 NULL 32 Using where; Using index; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+1 PRIMARY a index NULL t1_c2 10 NULL 32 Using where; Using index; FirstMatch(t1)
+analyze delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 32.00 9.38 9.38 Using where
+1 PRIMARY a index NULL t1_c2 10 NULL 32 11.67 100.00 5.71 Using where; Using index; FirstMatch(t1)
+select * from t1;
+c1 c2 c3
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with IN predicand over the updated table in WHERE
+#
+create table tmp as select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+explain select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+1 PRIMARY a ref t1_c2 t1_c2 10 test.t1.c2,test.t1.c3 1 Using index; FirstMatch(t1)
+explain delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+1 PRIMARY a ref t1_c2 t1_c2 10 test.t1.c2,test.t1.c3 1 Using index; FirstMatch(t1)
+delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+affected rows: 8
+select * from t1;
+c1 c2 c3
+1 3 3
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with a limit - can be deleted
+#
+create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+explain select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c1 5 Using index; FirstMatch(t1)
+explain delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c1 5 Using index; FirstMatch(t1)
+analyze delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 100.00 12.50 Using where
+1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c1 5 0.25 18.75 100.00 Using index; FirstMatch(t1)
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with a limit and an order by
+#
+create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+explain select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort
+1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c1 5 Using where; FirstMatch(t1)
+explain delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort
+2 DEPENDENT SUBQUERY a index_subquery t1_c2 t1_c2 5 func 5 Using where
+delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+affected rows: 1
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete: 2 execution of PS
+#
+prepare create_tmp_stmt from
+"create table tmp as select * from t1
+ where c2=(select a.c3 from t1 a where a.c3 = ?)";
+prepare delete_t1_stmt from
+"delete from t1 where c2=(select a.c3 from t1 a where a.c3 = ?)";
+set @a:=5;
+execute create_tmp_stmt using @a;
+execute delete_t1_stmt using @a;
+execute delete_t1_stmt using @a;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 6 38
+prepare insert_tmp_stmt from
+"insert into tmp(c1,c2,c3) select * from t1
+ where c2=(select a.c3 from t1 a where a.c3 = ?)";
+set @a:=2;
+execute insert_tmp_stmt using @a;
+execute delete_t1_stmt using @a;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 3 3
+11 1 11
+11 3 13
+12 1 14
+12 3 16
+12 4 17
+2 1 4
+2 3 6
+2 4 7
+21 3 22
+21 4 23
+22 3 25
+22 4 26
+22 6 28
+31 3 32
+31 4 33
+32 3 35
+32 4 36
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+drop table tmp;
+#
+# Delete in stored procedure
+#
+create procedure sp()
+begin
+delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+end
+//
+create table tmp as select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+insert into tmp(c1,c2,c3) select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+insert into tmp(c1,c2,c3) select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop procedure sp;
+drop table tmp;
+#
+# Delete in stored function
+#
+create function f1(IN a INT) returns int
+begin
+delete from t1 where c3 < a order by c3 limit 1;
+return 1;
+end;//
+set @a:=7;
+create table tmp as select * from t1 where c3 < @a
+order by c3 limit 1;
+select f1(@a);
+f1(@a)
+1
+insert into tmp(c1,c2,c3) select * from t1 where c3 < @a
+order by c3 limit 1;
+select f1(@a);
+f1(@a)
+1
+select * from t1;
+c1 c2 c3
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop function f1;
+drop table tmp;
+#
+# Delete in trigger
+#
+create table t2 (c1 integer);
+insert into t2(c1) values (1), (2), (3), (4), (5), (6), (7), (8);
+CREATE TABLE cnt(del integer);
+INSERT INTO cnt VALUES(0);
+CREATE TRIGGER tr1 AFTER DELETE ON t1 FOR EACH ROW
+UPDATE cnt SET del=del+1;
+CREATE TRIGGER tr2 AFTER DELETE ON t1 FOR EACH ROW
+DELETE FROM t2 WHERE c1> (SELECT count(*)-1 FROM t2);
+CREATE TABLE tmp as SELECT * FROM t1 WHERE c2>=3;
+DELETE FROM t1 WHERE c2>=3;
+affected rows: 20
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+11 1 11
+11 2 12
+12 1 14
+12 2 15
+2 1 4
+2 2 5
+21 2 21
+22 2 24
+31 2 31
+32 2 34
+SELECT * FROM t2;
+c1
+SELECT * FROM cnt;
+del
+20
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+DROP TRIGGER tr1;
+DROP TRIGGER tr2;
+drop table t2, cnt, tmp;
+#
+# Delete with a reference to view in subquery
+#
+create table tmp as select * from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+explain select * from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 Using index
+explain delete from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 Using index
+analyze delete from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 100.00 25.00 Using where
+2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 1.00 100.00 100.00 Using index
+select * from t1;
+c1 c2 c3
+1 1 1
+1 3 3
+11 1 11
+11 3 13
+12 1 14
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 3 22
+21 4 23
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 3 32
+31 4 33
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#######################################
+# Test with a primary key #
+#######################################
+drop index t1_c2 on t1;
+alter table t1 add primary key (c3);
+#
+# Delete with value from subquery on the same table
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+explain select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1
+explain delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1
+delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+affected rows: 4
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with EXISTS subquery over the updated table
+# in WHERE + possibly sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+explain select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+analyze delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 9.38 9.38 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 12.33 100.00 5.41 Using where; FirstMatch(t1)
+select * from t1;
+c1 c2 c3
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with IN predicand over the updated table in WHERE
+#
+create table tmp as select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+explain select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; Start temporary
+1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c1 1 Using where; End temporary
+explain delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; Start temporary
+1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c1 1 Using where; End temporary
+delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+affected rows: 8
+select * from t1;
+c1 c2 c3
+1 3 3
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with a limit - can be deleted
+#
+create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+explain select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; Start temporary
+1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c2 1 Using where; End temporary
+explain delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; Start temporary
+1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c2 1 Using where; End temporary
+analyze delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY a ALL NULL NULL NULL NULL 32 1.00 100.00 100.00 Using where; Start temporary
+1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c2 1 1.00 3.12 100.00 Using where; End temporary
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with a limit and an order by
+#
+create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+explain select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 index PRIMARY PRIMARY 4 NULL 1
+1 PRIMARY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using where
+explain delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 index NULL PRIMARY 4 NULL 1 Using where
+2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using where
+delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+affected rows: 1
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete: 2 execution of PS
+#
+prepare create_tmp_stmt from
+"create table tmp as select * from t1
+ where c2=(select a.c3 from t1 a where a.c3 = ?)";
+prepare delete_t1_stmt from
+"delete from t1 where c2=(select a.c3 from t1 a where a.c3 = ?)";
+set @a:=5;
+execute create_tmp_stmt using @a;
+execute delete_t1_stmt using @a;
+execute delete_t1_stmt using @a;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 6 38
+prepare insert_tmp_stmt from
+"insert into tmp(c1,c2,c3) select * from t1
+ where c2=(select a.c3 from t1 a where a.c3 = ?)";
+set @a:=2;
+execute insert_tmp_stmt using @a;
+execute delete_t1_stmt using @a;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 3 3
+11 1 11
+11 3 13
+12 1 14
+12 3 16
+12 4 17
+2 1 4
+2 3 6
+2 4 7
+21 3 22
+21 4 23
+22 3 25
+22 4 26
+22 6 28
+31 3 32
+31 4 33
+32 3 35
+32 4 36
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+drop table tmp;
+#
+# Delete in stored procedure
+#
+create procedure sp()
+begin
+delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+end
+//
+create table tmp as select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+insert into tmp(c1,c2,c3) select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+insert into tmp(c1,c2,c3) select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop procedure sp;
+drop table tmp;
+#
+# Delete in stored function
+#
+create function f1(IN a INT) returns int
+begin
+delete from t1 where c3 < a order by c3 limit 1;
+return 1;
+end;//
+set @a:=7;
+create table tmp as select * from t1 where c3 < @a
+order by c3 limit 1;
+select f1(@a);
+f1(@a)
+1
+insert into tmp(c1,c2,c3) select * from t1 where c3 < @a
+order by c3 limit 1;
+select f1(@a);
+f1(@a)
+1
+select * from t1;
+c1 c2 c3
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop function f1;
+drop table tmp;
+#
+# Delete in trigger
+#
+create table t2 (c1 integer);
+insert into t2(c1) values (1), (2), (3), (4), (5), (6), (7), (8);
+CREATE TABLE cnt(del integer);
+INSERT INTO cnt VALUES(0);
+CREATE TRIGGER tr1 AFTER DELETE ON t1 FOR EACH ROW
+UPDATE cnt SET del=del+1;
+CREATE TRIGGER tr2 AFTER DELETE ON t1 FOR EACH ROW
+DELETE FROM t2 WHERE c1> (SELECT count(*)-1 FROM t2);
+CREATE TABLE tmp as SELECT * FROM t1 WHERE c2>=3;
+DELETE FROM t1 WHERE c2>=3;
+affected rows: 20
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+11 1 11
+11 2 12
+12 1 14
+12 2 15
+2 1 4
+2 2 5
+21 2 21
+22 2 24
+31 2 31
+32 2 34
+SELECT * FROM t2;
+c1
+SELECT * FROM cnt;
+del
+20
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+DROP TRIGGER tr1;
+DROP TRIGGER tr2;
+drop table t2, cnt, tmp;
+#
+# Delete with a reference to view in subquery
+#
+create table tmp as select * from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+explain select * from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+explain delete from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+analyze delete from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 100.00 25.00 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 32.00 25.00 3.12 Using where
+select * from t1;
+c1 c2 c3
+1 1 1
+1 3 3
+11 1 11
+11 3 13
+12 1 14
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 3 22
+21 4 23
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 3 32
+31 4 33
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+drop view v1;
+drop table t1;
+#
+# Test on dynamic columns (blob)
+#
+create table assets (
+item_name varchar(32) primary key, -- A common attribute for all items
+dynamic_cols blob -- Dynamic columns will be stored here
+);
+INSERT INTO assets
+VALUES ('MariaDB T-shirt',
+COLUMN_CREATE('color', 'blue', 'size', 'XL'));
+INSERT INTO assets
+VALUES ('Thinkpad Laptop',
+COLUMN_CREATE('color', 'black', 'price', 500));
+INSERT INTO assets
+VALUES ('Fridge',
+COLUMN_CREATE('color', 'white', 'warranty', '5 years'));
+INSERT INTO assets
+VALUES ('Microwave',
+COLUMN_CREATE('warranty', '3 years'));
+SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color
+FROM assets ORDER BY item_name;
+item_name color
+Fridge white
+MariaDB T-shirt blue
+Microwave NULL
+Thinkpad Laptop black
+UPDATE assets SET dynamic_cols=COLUMN_DELETE(dynamic_cols, 'color')
+WHERE item_name='Fridge';
+SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color
+FROM assets ORDER BY item_name;
+item_name color
+Fridge NULL
+MariaDB T-shirt blue
+Microwave NULL
+Thinkpad Laptop black
+DELETE FROM assets
+WHERE item_name in
+(select b.item_name from assets b
+where COLUMN_GET(b.dynamic_cols, 'color' as char) ='black');
+SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color
+FROM assets ORDER BY item_name;
+item_name color
+Fridge NULL
+MariaDB T-shirt blue
+Microwave NULL
+DELETE FROM assets WHERE item_name='Microwave';
+SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color
+FROM assets ORDER BY item_name;
+item_name color
+Fridge NULL
+MariaDB T-shirt blue
+drop table assets ;
+#
+# Test on fulltext columns
+#
+CREATE TABLE ft2(copy TEXT,FULLTEXT(copy));
+INSERT INTO ft2(copy) VALUES
+('MySQL vs MariaDB database'),
+('Oracle vs MariaDB database'),
+('PostgreSQL vs MariaDB database'),
+('MariaDB overview'),
+('Foreign keys'),
+('Primary keys'),
+('Indexes'),
+('Transactions'),
+('Triggers');
+SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('database');
+copy
+MySQL vs MariaDB database
+Oracle vs MariaDB database
+PostgreSQL vs MariaDB database
+DELETE FROM ft2 WHERE MATCH(copy) AGAINST('database');
+SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('database');
+copy
+drop table ft2;
+#######################################
+# #
+# Engine Aria #
+# #
+#######################################
+set default_storage_engine=Aria;
+create table t1 (c1 integer, c2 integer, c3 integer);
+insert into t1(c1,c2,c3)
+values (1,1,1),(1,2,2),(1,3,3),
+(2,1,4),(2,2,5),(2,3,6),
+(2,4,7),(2,5,8);
+insert into t1 select c1+10,c2,c3+10 from t1;
+insert into t1 select c1+20,c2+1,c3+20 from t1;
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create view v1 as select * from t1 where c2=2;
+#######################################
+# Test without any index #
+#######################################
+#
+# Delete with value from subquery on the same table
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status Table is already up to date
+create table tmp as select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+explain select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+explain delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+affected rows: 4
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with EXISTS subquery over the updated table
+# in WHERE + possibly sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+explain select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+analyze delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 9.38 9.38 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 12.67 100.00 5.26 Using where; FirstMatch(t1)
+select * from t1;
+c1 c2 c3
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with IN predicand over the updated table in WHERE
+#
+create table tmp as select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+explain select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+affected rows: 8
+select * from t1;
+c1 c2 c3
+1 3 3
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with a limit - can be deleted
+#
+create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+explain select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+analyze delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 25.00 100.00 12.00 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 22.67 100.00 1.47 Using where; FirstMatch(t1)
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with a limit and an order by
+#
+create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+explain select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using temporary; Using filesort
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+affected rows: 1
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete: 2 execution of PS
+#
+prepare create_tmp_stmt from
+"create table tmp as select * from t1
+ where c2=(select a.c3 from t1 a where a.c3 = ?)";
+prepare delete_t1_stmt from
+"delete from t1 where c2=(select a.c3 from t1 a where a.c3 = ?)";
+set @a:=5;
+execute create_tmp_stmt using @a;
+execute delete_t1_stmt using @a;
+execute delete_t1_stmt using @a;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 6 38
+prepare insert_tmp_stmt from
+"insert into tmp(c1,c2,c3) select * from t1
+ where c2=(select a.c3 from t1 a where a.c3 = ?)";
+set @a:=2;
+execute insert_tmp_stmt using @a;
+execute delete_t1_stmt using @a;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 3 3
+11 1 11
+11 3 13
+12 1 14
+12 3 16
+12 4 17
+2 1 4
+2 3 6
+2 4 7
+21 3 22
+21 4 23
+22 3 25
+22 4 26
+22 6 28
+31 3 32
+31 4 33
+32 3 35
+32 4 36
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+drop table tmp;
+#
+# Delete in stored procedure
+#
+create procedure sp()
+begin
+delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+end
+//
+create table tmp as select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+insert into tmp(c1,c2,c3) select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+insert into tmp(c1,c2,c3) select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop procedure sp;
+drop table tmp;
+#
+# Delete in stored function
+#
+create function f1(IN a INT) returns int
+begin
+delete from t1 where c3 < a order by c3 limit 1;
+return 1;
+end;//
+set @a:=7;
+create table tmp as select * from t1 where c3 < @a
+order by c3 limit 1;
+select f1(@a);
+f1(@a)
+1
+insert into tmp(c1,c2,c3) select * from t1 where c3 < @a
+order by c3 limit 1;
+select f1(@a);
+f1(@a)
+1
+select * from t1;
+c1 c2 c3
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop function f1;
+drop table tmp;
+#
+# Delete in trigger
+#
+create table t2 (c1 integer);
+insert into t2(c1) values (1), (2), (3), (4), (5), (6), (7), (8);
+CREATE TABLE cnt(del integer);
+INSERT INTO cnt VALUES(0);
+CREATE TRIGGER tr1 AFTER DELETE ON t1 FOR EACH ROW
+UPDATE cnt SET del=del+1;
+CREATE TRIGGER tr2 AFTER DELETE ON t1 FOR EACH ROW
+DELETE FROM t2 WHERE c1> (SELECT count(*)-1 FROM t2);
+CREATE TABLE tmp as SELECT * FROM t1 WHERE c2>=3;
+DELETE FROM t1 WHERE c2>=3;
+affected rows: 20
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+11 1 11
+11 2 12
+12 1 14
+12 2 15
+2 1 4
+2 2 5
+21 2 21
+22 2 24
+31 2 31
+32 2 34
+SELECT * FROM t2;
+c1
+SELECT * FROM cnt;
+del
+20
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+DROP TRIGGER tr1;
+DROP TRIGGER tr2;
+drop table t2, cnt, tmp;
+#
+# Delete with a reference to view in subquery
+#
+create table tmp as select * from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+explain select * from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+explain delete from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+analyze delete from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 100.00 25.00 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 32.00 25.00 3.12 Using where
+select * from t1;
+c1 c2 c3
+1 1 1
+1 3 3
+11 1 11
+11 3 13
+12 1 14
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 3 22
+21 4 23
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 3 32
+31 4 33
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with EXISTS subquery over the updated table
+# in WHERE + non-sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+affected rows: 8
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+11 1 11
+11 2 12
+12 1 14
+12 2 15
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 4 7
+2 5 8
+21 2 21
+21 4 23
+22 2 24
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 4 33
+32 2 34
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with order by
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where; Using filesort
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func #
+2 MATERIALIZED a ALL NULL NULL NULL NULL #
+explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func #
+2 MATERIALIZED a ALL NULL NULL NULL NULL #
+analyze delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL # 32.00 62.50 62.50 Using where
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func # 1.00 100.00 100.00
+2 MATERIALIZED a ALL NULL NULL NULL NULL # 32.00 62.50 100.00
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+11 1 11
+11 2 12
+12 1 14
+12 2 15
+2 1 4
+2 2 5
+21 2 21
+22 2 24
+31 2 31
+32 2 34
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete from view
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+explain select * from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+explain delete from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+delete from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+affected rows: 0
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete from view using reference
+# to the same view in subquery
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status Table is already up to date
+create table tmp as select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+explain select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where
+1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL # Using where
+explain delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where
+3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL # Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL # Using where
+analyze delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL # 32.00 3.91 3.12 Using where
+3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL # 5.00 25.00 20.00 Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL # 32.00 100.00 3.12 Using where
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#######################################
+# Test with an index #
+#######################################
+create index t1_c2 on t1 (c2,c1);
+#
+# Delete with value from subquery on the same table
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+explain select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+explain delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+affected rows: 4
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with EXISTS subquery over the updated table
+# in WHERE + possibly sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+explain select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+1 PRIMARY a index NULL t1_c2 10 NULL 32 Using where; Using index; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+1 PRIMARY a index NULL t1_c2 10 NULL 32 Using where; Using index; FirstMatch(t1)
+analyze delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 32.00 9.38 9.38 Using where
+1 PRIMARY a index NULL t1_c2 10 NULL 32 11.67 100.00 5.71 Using where; Using index; FirstMatch(t1)
+select * from t1;
+c1 c2 c3
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with IN predicand over the updated table in WHERE
+#
+create table tmp as select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+explain select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+1 PRIMARY a ref t1_c2 t1_c2 10 test.t1.c2,test.t1.c3 1 Using index; FirstMatch(t1)
+explain delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+1 PRIMARY a ref t1_c2 t1_c2 10 test.t1.c2,test.t1.c3 1 Using index; FirstMatch(t1)
+delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+affected rows: 8
+select * from t1;
+c1 c2 c3
+1 3 3
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with a limit - can be deleted
+#
+create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+explain select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c1 5 Using index; FirstMatch(t1)
+explain delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c1 5 Using index; FirstMatch(t1)
+analyze delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 27.00 100.00 14.81 Using where
+1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c1 5 0.25 18.75 100.00 Using index; FirstMatch(t1)
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with a limit and an order by
+#
+create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+explain select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort
+1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c1 5 Using where; FirstMatch(t1)
+explain delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort
+2 DEPENDENT SUBQUERY a index_subquery t1_c2 t1_c2 5 func 5 Using where
+delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+affected rows: 1
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete: 2 execution of PS
+#
+prepare create_tmp_stmt from
+"create table tmp as select * from t1
+ where c2=(select a.c3 from t1 a where a.c3 = ?)";
+prepare delete_t1_stmt from
+"delete from t1 where c2=(select a.c3 from t1 a where a.c3 = ?)";
+set @a:=5;
+execute create_tmp_stmt using @a;
+execute delete_t1_stmt using @a;
+execute delete_t1_stmt using @a;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 6 38
+prepare insert_tmp_stmt from
+"insert into tmp(c1,c2,c3) select * from t1
+ where c2=(select a.c3 from t1 a where a.c3 = ?)";
+set @a:=2;
+execute insert_tmp_stmt using @a;
+execute delete_t1_stmt using @a;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 3 3
+11 1 11
+11 3 13
+12 1 14
+12 3 16
+12 4 17
+2 1 4
+2 3 6
+2 4 7
+21 3 22
+21 4 23
+22 3 25
+22 4 26
+22 6 28
+31 3 32
+31 4 33
+32 3 35
+32 4 36
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+drop table tmp;
+#
+# Delete in stored procedure
+#
+create procedure sp()
+begin
+delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+end
+//
+create table tmp as select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+insert into tmp(c1,c2,c3) select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+insert into tmp(c1,c2,c3) select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop procedure sp;
+drop table tmp;
+#
+# Delete in stored function
+#
+create function f1(IN a INT) returns int
+begin
+delete from t1 where c3 < a order by c3 limit 1;
+return 1;
+end;//
+set @a:=7;
+create table tmp as select * from t1 where c3 < @a
+order by c3 limit 1;
+select f1(@a);
+f1(@a)
+1
+insert into tmp(c1,c2,c3) select * from t1 where c3 < @a
+order by c3 limit 1;
+select f1(@a);
+f1(@a)
+1
+select * from t1;
+c1 c2 c3
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop function f1;
+drop table tmp;
+#
+# Delete in trigger
+#
+create table t2 (c1 integer);
+insert into t2(c1) values (1), (2), (3), (4), (5), (6), (7), (8);
+CREATE TABLE cnt(del integer);
+INSERT INTO cnt VALUES(0);
+CREATE TRIGGER tr1 AFTER DELETE ON t1 FOR EACH ROW
+UPDATE cnt SET del=del+1;
+CREATE TRIGGER tr2 AFTER DELETE ON t1 FOR EACH ROW
+DELETE FROM t2 WHERE c1> (SELECT count(*)-1 FROM t2);
+CREATE TABLE tmp as SELECT * FROM t1 WHERE c2>=3;
+DELETE FROM t1 WHERE c2>=3;
+affected rows: 20
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+11 1 11
+11 2 12
+12 1 14
+12 2 15
+2 1 4
+2 2 5
+21 2 21
+22 2 24
+31 2 31
+32 2 34
+SELECT * FROM t2;
+c1
+SELECT * FROM cnt;
+del
+20
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+DROP TRIGGER tr1;
+DROP TRIGGER tr2;
+drop table t2, cnt, tmp;
+#
+# Delete with a reference to view in subquery
+#
+create table tmp as select * from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+explain select * from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 Using index
+explain delete from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 Using index
+analyze delete from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 100.00 25.00 Using where
+2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 1.00 100.00 100.00 Using index
+select * from t1;
+c1 c2 c3
+1 1 1
+1 3 3
+11 1 11
+11 3 13
+12 1 14
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 3 22
+21 4 23
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 3 32
+31 4 33
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with EXISTS subquery over the updated table
+# in WHERE + non-sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ref t1_c2 t1_c2 5 const 8
+1 PRIMARY a ref t1_c2 t1_c2 5 const 8 Using index; FirstMatch(t1)
+explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ref t1_c2 t1_c2 5 const 8
+1 PRIMARY a ref t1_c2 t1_c2 5 const 8 Using index; FirstMatch(t1)
+delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+affected rows: 8
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+11 1 11
+11 2 12
+12 1 14
+12 2 15
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 4 7
+2 5 8
+21 2 21
+21 4 23
+22 2 24
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 4 33
+32 2 34
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with order by
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 range t1_c2 t1_c2 5 NULL # Using index condition
+1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c2 # Using index; FirstMatch(t1)
+explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY a index t1_c2 t1_c2 10 NULL # Using where; Using index; LooseScan
+1 PRIMARY t1 ref t1_c2 t1_c2 5 test.a.c2 #
+analyze delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY a index t1_c2 t1_c2 10 NULL # 16.00 20.00 25.00 Using where; Using index; LooseScan
+1 PRIMARY t1 ref t1_c2 t1_c2 5 test.a.c2 # 5.00 4.76 100.00
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+11 1 11
+11 2 12
+12 1 14
+12 2 15
+2 1 4
+2 2 5
+21 2 21
+22 2 24
+31 2 31
+32 2 34
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete from view
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+explain select * from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ref t1_c2 t1_c2 5 const 8 Using where
+2 DEPENDENT SUBQUERY a ref t1_c2 t1_c2 5 test.t1.c2 5 Using index
+explain delete from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ref t1_c2 t1_c2 5 const 8 Using where
+2 DEPENDENT SUBQUERY a ref t1_c2 t1_c2 5 test.t1.c2 5 Using index
+delete from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+affected rows: 0
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete from view using reference
+# to the same view in subquery
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status Table is already up to date
+create table tmp as select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+explain select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ref t1_c2 t1_c2 10 const,const # Using where
+1 PRIMARY t1 ref t1_c2 t1_c2 10 const,const # Using index; FirstMatch(t1)
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL # Using where
+explain delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ref t1_c2 t1_c2 10 const,const # Using where
+3 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,func # Using where; Using index
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL # Using where
+analyze delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY t1 ref t1_c2 t1_c2 10 const,const # 1.00 100.00 100.00 Using where
+3 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,func # 1.00 100.00 100.00 Using where; Using index
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL # 32.00 100.00 3.12 Using where
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#######################################
+# Test with a primary key #
+#######################################
+drop index t1_c2 on t1;
+alter table t1 add primary key (c3);
+#
+# Delete with value from subquery on the same table
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+explain select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using index
+explain delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using index
+delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+affected rows: 4
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with EXISTS subquery over the updated table
+# in WHERE + possibly sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+explain select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+analyze delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 9.38 9.38 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 12.00 100.00 5.56 Using where; FirstMatch(t1)
+select * from t1;
+c1 c2 c3
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with IN predicand over the updated table in WHERE
+#
+create table tmp as select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+explain select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; Start temporary
+1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c1 1 Using where; End temporary
+explain delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; Start temporary
+1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c1 1 Using where; End temporary
+delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+affected rows: 8
+select * from t1;
+c1 c2 c3
+1 3 3
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with a limit - can be deleted
+#
+create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+explain select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; Start temporary
+1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c2 1 Using where; End temporary
+explain delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; Start temporary
+1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c2 1 Using where; End temporary
+analyze delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY a ALL NULL NULL NULL NULL 32 4.00 100.00 100.00 Using where; Start temporary
+1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c2 1 1.00 3.12 25.00 Using where; End temporary
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with a limit and an order by
+#
+create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+explain select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 index PRIMARY PRIMARY 4 NULL 1
+1 PRIMARY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using where
+explain delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 index NULL PRIMARY 4 NULL 1 Using where
+2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using where
+delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+affected rows: 1
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete: 2 execution of PS
+#
+prepare create_tmp_stmt from
+"create table tmp as select * from t1
+ where c2=(select a.c3 from t1 a where a.c3 = ?)";
+prepare delete_t1_stmt from
+"delete from t1 where c2=(select a.c3 from t1 a where a.c3 = ?)";
+set @a:=5;
+execute create_tmp_stmt using @a;
+execute delete_t1_stmt using @a;
+execute delete_t1_stmt using @a;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 6 38
+prepare insert_tmp_stmt from
+"insert into tmp(c1,c2,c3) select * from t1
+ where c2=(select a.c3 from t1 a where a.c3 = ?)";
+set @a:=2;
+execute insert_tmp_stmt using @a;
+execute delete_t1_stmt using @a;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 3 3
+11 1 11
+11 3 13
+12 1 14
+12 3 16
+12 4 17
+2 1 4
+2 3 6
+2 4 7
+21 3 22
+21 4 23
+22 3 25
+22 4 26
+22 6 28
+31 3 32
+31 4 33
+32 3 35
+32 4 36
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+drop table tmp;
+#
+# Delete in stored procedure
+#
+create procedure sp()
+begin
+delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+end
+//
+create table tmp as select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+insert into tmp(c1,c2,c3) select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+insert into tmp(c1,c2,c3) select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop procedure sp;
+drop table tmp;
+#
+# Delete in stored function
+#
+create function f1(IN a INT) returns int
+begin
+delete from t1 where c3 < a order by c3 limit 1;
+return 1;
+end;//
+set @a:=7;
+create table tmp as select * from t1 where c3 < @a
+order by c3 limit 1;
+select f1(@a);
+f1(@a)
+1
+insert into tmp(c1,c2,c3) select * from t1 where c3 < @a
+order by c3 limit 1;
+select f1(@a);
+f1(@a)
+1
+select * from t1;
+c1 c2 c3
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop function f1;
+drop table tmp;
+#
+# Delete in trigger
+#
+create table t2 (c1 integer);
+insert into t2(c1) values (1), (2), (3), (4), (5), (6), (7), (8);
+CREATE TABLE cnt(del integer);
+INSERT INTO cnt VALUES(0);
+CREATE TRIGGER tr1 AFTER DELETE ON t1 FOR EACH ROW
+UPDATE cnt SET del=del+1;
+CREATE TRIGGER tr2 AFTER DELETE ON t1 FOR EACH ROW
+DELETE FROM t2 WHERE c1> (SELECT count(*)-1 FROM t2);
+CREATE TABLE tmp as SELECT * FROM t1 WHERE c2>=3;
+DELETE FROM t1 WHERE c2>=3;
+affected rows: 20
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+11 1 11
+11 2 12
+12 1 14
+12 2 15
+2 1 4
+2 2 5
+21 2 21
+22 2 24
+31 2 31
+32 2 34
+SELECT * FROM t2;
+c1
+SELECT * FROM cnt;
+del
+20
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+DROP TRIGGER tr1;
+DROP TRIGGER tr2;
+drop table t2, cnt, tmp;
+#
+# Delete with a reference to view in subquery
+#
+create table tmp as select * from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+explain select * from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+explain delete from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+analyze delete from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 100.00 25.00 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 32.00 25.00 3.12 Using where
+select * from t1;
+c1 c2 c3
+1 1 1
+1 3 3
+11 1 11
+11 3 13
+12 1 14
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 3 22
+21 4 23
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 3 32
+31 4 33
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with EXISTS subquery over the updated table
+# in WHERE + non-sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+affected rows: 8
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+11 1 11
+11 2 12
+12 1 14
+12 2 15
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 4 7
+2 5 8
+21 2 21
+21 4 23
+22 2 24
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 4 33
+32 2 34
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with order by
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where; Using filesort
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func #
+2 MATERIALIZED a ALL NULL NULL NULL NULL #
+explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func #
+2 MATERIALIZED a ALL NULL NULL NULL NULL #
+analyze delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL # 32.00 62.50 62.50 Using where
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func # 1.00 100.00 100.00
+2 MATERIALIZED a ALL NULL NULL NULL NULL # 32.00 62.50 100.00
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+11 1 11
+11 2 12
+12 1 14
+12 2 15
+2 1 4
+2 2 5
+21 2 21
+22 2 24
+31 2 31
+32 2 34
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete from view
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+explain select * from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 const PRIMARY PRIMARY 4 const 1
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+explain delete from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 const PRIMARY PRIMARY 4 const 1
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+delete from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+affected rows: 0
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete from view using reference
+# to the same view in subquery
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status Table is already up to date
+create table tmp as select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+explain select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where
+1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 #
+explain delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where
+3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL # Using where
+2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 #
+analyze delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL # 32.00 3.91 3.12 Using where
+3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL # 6.00 25.00 16.67 Using where
+2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 # 1.00 100.00 100.00
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+drop view v1;
+drop table t1;
+#
+# Test on dynamic columns (blob)
+#
+create table assets (
+item_name varchar(32) primary key, -- A common attribute for all items
+dynamic_cols blob -- Dynamic columns will be stored here
+);
+INSERT INTO assets
+VALUES ('MariaDB T-shirt',
+COLUMN_CREATE('color', 'blue', 'size', 'XL'));
+INSERT INTO assets
+VALUES ('Thinkpad Laptop',
+COLUMN_CREATE('color', 'black', 'price', 500));
+INSERT INTO assets
+VALUES ('Fridge',
+COLUMN_CREATE('color', 'white', 'warranty', '5 years'));
+INSERT INTO assets
+VALUES ('Microwave',
+COLUMN_CREATE('warranty', '3 years'));
+SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color
+FROM assets ORDER BY item_name;
+item_name color
+Fridge white
+MariaDB T-shirt blue
+Microwave NULL
+Thinkpad Laptop black
+UPDATE assets SET dynamic_cols=COLUMN_DELETE(dynamic_cols, 'color')
+WHERE item_name='Fridge';
+SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color
+FROM assets ORDER BY item_name;
+item_name color
+Fridge NULL
+MariaDB T-shirt blue
+Microwave NULL
+Thinkpad Laptop black
+DELETE FROM assets
+WHERE item_name in
+(select b.item_name from assets b
+where COLUMN_GET(b.dynamic_cols, 'color' as char) ='black');
+SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color
+FROM assets ORDER BY item_name;
+item_name color
+Fridge NULL
+MariaDB T-shirt blue
+Microwave NULL
+DELETE FROM assets WHERE item_name='Microwave';
+SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color
+FROM assets ORDER BY item_name;
+item_name color
+Fridge NULL
+MariaDB T-shirt blue
+drop table assets ;
+#
+# Test on fulltext columns
+#
+CREATE TABLE ft2(copy TEXT,FULLTEXT(copy));
+INSERT INTO ft2(copy) VALUES
+('MySQL vs MariaDB database'),
+('Oracle vs MariaDB database'),
+('PostgreSQL vs MariaDB database'),
+('MariaDB overview'),
+('Foreign keys'),
+('Primary keys'),
+('Indexes'),
+('Transactions'),
+('Triggers');
+SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('database');
+copy
+MySQL vs MariaDB database
+Oracle vs MariaDB database
+PostgreSQL vs MariaDB database
+DELETE FROM ft2 WHERE MATCH(copy) AGAINST('database');
+SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('database');
+copy
+drop table ft2;
+#######################################
+# #
+# Engine MyISAM #
+# #
+#######################################
+set default_storage_engine=MyISAM;
+create table t1 (c1 integer, c2 integer, c3 integer);
+insert into t1(c1,c2,c3)
+values (1,1,1),(1,2,2),(1,3,3),
+(2,1,4),(2,2,5),(2,3,6),
+(2,4,7),(2,5,8);
+insert into t1 select c1+10,c2,c3+10 from t1;
+insert into t1 select c1+20,c2+1,c3+20 from t1;
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create view v1 as select * from t1 where c2=2;
+#######################################
+# Test without any index #
+#######################################
+#
+# Delete with value from subquery on the same table
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status Table is already up to date
+create table tmp as select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+explain select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+explain delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+affected rows: 4
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with EXISTS subquery over the updated table
+# in WHERE + possibly sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+explain select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+analyze delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 9.38 9.38 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 12.67 100.00 5.26 Using where; FirstMatch(t1)
+select * from t1;
+c1 c2 c3
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with IN predicand over the updated table in WHERE
+#
+create table tmp as select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+explain select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+affected rows: 8
+select * from t1;
+c1 c2 c3
+1 3 3
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with a limit - can be deleted
+#
+create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+explain select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+analyze delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 25.00 100.00 12.00 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 22.67 100.00 1.47 Using where; FirstMatch(t1)
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with a limit and an order by
+#
+create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+explain select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using temporary; Using filesort
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+affected rows: 1
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete: 2 execution of PS
+#
+prepare create_tmp_stmt from
+"create table tmp as select * from t1
+ where c2=(select a.c3 from t1 a where a.c3 = ?)";
+prepare delete_t1_stmt from
+"delete from t1 where c2=(select a.c3 from t1 a where a.c3 = ?)";
+set @a:=5;
+execute create_tmp_stmt using @a;
+execute delete_t1_stmt using @a;
+execute delete_t1_stmt using @a;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 6 38
+prepare insert_tmp_stmt from
+"insert into tmp(c1,c2,c3) select * from t1
+ where c2=(select a.c3 from t1 a where a.c3 = ?)";
+set @a:=2;
+execute insert_tmp_stmt using @a;
+execute delete_t1_stmt using @a;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 3 3
+11 1 11
+11 3 13
+12 1 14
+12 3 16
+12 4 17
+2 1 4
+2 3 6
+2 4 7
+21 3 22
+21 4 23
+22 3 25
+22 4 26
+22 6 28
+31 3 32
+31 4 33
+32 3 35
+32 4 36
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+drop table tmp;
+#
+# Delete in stored procedure
+#
+create procedure sp()
+begin
+delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+end
+//
+create table tmp as select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+insert into tmp(c1,c2,c3) select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+insert into tmp(c1,c2,c3) select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop procedure sp;
+drop table tmp;
+#
+# Delete in stored function
+#
+create function f1(IN a INT) returns int
+begin
+delete from t1 where c3 < a order by c3 limit 1;
+return 1;
+end;//
+set @a:=7;
+create table tmp as select * from t1 where c3 < @a
+order by c3 limit 1;
+select f1(@a);
+f1(@a)
+1
+insert into tmp(c1,c2,c3) select * from t1 where c3 < @a
+order by c3 limit 1;
+select f1(@a);
+f1(@a)
+1
+select * from t1;
+c1 c2 c3
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop function f1;
+drop table tmp;
+#
+# Delete in trigger
+#
+create table t2 (c1 integer);
+insert into t2(c1) values (1), (2), (3), (4), (5), (6), (7), (8);
+CREATE TABLE cnt(del integer);
+INSERT INTO cnt VALUES(0);
+CREATE TRIGGER tr1 AFTER DELETE ON t1 FOR EACH ROW
+UPDATE cnt SET del=del+1;
+CREATE TRIGGER tr2 AFTER DELETE ON t1 FOR EACH ROW
+DELETE FROM t2 WHERE c1> (SELECT count(*)-1 FROM t2);
+CREATE TABLE tmp as SELECT * FROM t1 WHERE c2>=3;
+DELETE FROM t1 WHERE c2>=3;
+affected rows: 20
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+11 1 11
+11 2 12
+12 1 14
+12 2 15
+2 1 4
+2 2 5
+21 2 21
+22 2 24
+31 2 31
+32 2 34
+SELECT * FROM t2;
+c1
+SELECT * FROM cnt;
+del
+20
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+DROP TRIGGER tr1;
+DROP TRIGGER tr2;
+drop table t2, cnt, tmp;
+#
+# Delete with a reference to view in subquery
+#
+create table tmp as select * from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+explain select * from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+explain delete from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+analyze delete from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 100.00 25.00 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 32.00 25.00 3.12 Using where
+select * from t1;
+c1 c2 c3
+1 1 1
+1 3 3
+11 1 11
+11 3 13
+12 1 14
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 3 22
+21 4 23
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 3 32
+31 4 33
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with EXISTS subquery over the updated table
+# in WHERE + non-sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+affected rows: 8
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+11 1 11
+11 2 12
+12 1 14
+12 2 15
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 4 7
+2 5 8
+21 2 21
+21 4 23
+22 2 24
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 4 33
+32 2 34
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with order by
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where; Using filesort
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func #
+2 MATERIALIZED a ALL NULL NULL NULL NULL #
+explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func #
+2 MATERIALIZED a ALL NULL NULL NULL NULL #
+analyze delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL # 32.00 62.50 62.50 Using where
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func # 1.00 100.00 100.00
+2 MATERIALIZED a ALL NULL NULL NULL NULL # 32.00 62.50 100.00
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+11 1 11
+11 2 12
+12 1 14
+12 2 15
+2 1 4
+2 2 5
+21 2 21
+22 2 24
+31 2 31
+32 2 34
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete from view
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+explain select * from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+explain delete from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+delete from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+affected rows: 0
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete from view using reference
+# to the same view in subquery
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status Table is already up to date
+create table tmp as select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+explain select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where
+1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL # Using where
+explain delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where
+3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL # Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL # Using where
+analyze delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL # 32.00 3.91 3.12 Using where
+3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL # 5.00 25.00 20.00 Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL # 32.00 100.00 3.12 Using where
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#######################################
+# Test with an index #
+#######################################
+create index t1_c2 on t1 (c2,c1);
+#
+# Delete with value from subquery on the same table
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+explain select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+explain delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+affected rows: 4
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with EXISTS subquery over the updated table
+# in WHERE + possibly sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+explain select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+1 PRIMARY a index NULL t1_c2 10 NULL 32 Using where; Using index; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+1 PRIMARY a index NULL t1_c2 10 NULL 32 Using where; Using index; FirstMatch(t1)
+analyze delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 32.00 9.38 9.38 Using where
+1 PRIMARY a index NULL t1_c2 10 NULL 32 11.67 100.00 5.71 Using where; Using index; FirstMatch(t1)
+select * from t1;
+c1 c2 c3
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with IN predicand over the updated table in WHERE
+#
+create table tmp as select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+explain select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+1 PRIMARY a ref t1_c2 t1_c2 10 test.t1.c2,test.t1.c3 1 Using index; FirstMatch(t1)
+explain delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+1 PRIMARY a ref t1_c2 t1_c2 10 test.t1.c2,test.t1.c3 1 Using index; FirstMatch(t1)
+delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+affected rows: 8
+select * from t1;
+c1 c2 c3
+1 3 3
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with a limit - can be deleted
+#
+create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+explain select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c1 5 Using index; FirstMatch(t1)
+explain delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c1 5 Using index; FirstMatch(t1)
+analyze delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 29.00 100.00 13.79 Using where
+1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c1 5 0.25 18.75 100.00 Using index; FirstMatch(t1)
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with a limit and an order by
+#
+create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+explain select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort
+1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c1 5 Using where; FirstMatch(t1)
+explain delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort
+2 DEPENDENT SUBQUERY a index_subquery t1_c2 t1_c2 5 func 5 Using where
+delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+affected rows: 1
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete: 2 execution of PS
+#
+prepare create_tmp_stmt from
+"create table tmp as select * from t1
+ where c2=(select a.c3 from t1 a where a.c3 = ?)";
+prepare delete_t1_stmt from
+"delete from t1 where c2=(select a.c3 from t1 a where a.c3 = ?)";
+set @a:=5;
+execute create_tmp_stmt using @a;
+execute delete_t1_stmt using @a;
+execute delete_t1_stmt using @a;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 6 38
+prepare insert_tmp_stmt from
+"insert into tmp(c1,c2,c3) select * from t1
+ where c2=(select a.c3 from t1 a where a.c3 = ?)";
+set @a:=2;
+execute insert_tmp_stmt using @a;
+execute delete_t1_stmt using @a;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 3 3
+11 1 11
+11 3 13
+12 1 14
+12 3 16
+12 4 17
+2 1 4
+2 3 6
+2 4 7
+21 3 22
+21 4 23
+22 3 25
+22 4 26
+22 6 28
+31 3 32
+31 4 33
+32 3 35
+32 4 36
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+drop table tmp;
+#
+# Delete in stored procedure
+#
+create procedure sp()
+begin
+delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+end
+//
+create table tmp as select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+insert into tmp(c1,c2,c3) select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+insert into tmp(c1,c2,c3) select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop procedure sp;
+drop table tmp;
+#
+# Delete in stored function
+#
+create function f1(IN a INT) returns int
+begin
+delete from t1 where c3 < a order by c3 limit 1;
+return 1;
+end;//
+set @a:=7;
+create table tmp as select * from t1 where c3 < @a
+order by c3 limit 1;
+select f1(@a);
+f1(@a)
+1
+insert into tmp(c1,c2,c3) select * from t1 where c3 < @a
+order by c3 limit 1;
+select f1(@a);
+f1(@a)
+1
+select * from t1;
+c1 c2 c3
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop function f1;
+drop table tmp;
+#
+# Delete in trigger
+#
+create table t2 (c1 integer);
+insert into t2(c1) values (1), (2), (3), (4), (5), (6), (7), (8);
+CREATE TABLE cnt(del integer);
+INSERT INTO cnt VALUES(0);
+CREATE TRIGGER tr1 AFTER DELETE ON t1 FOR EACH ROW
+UPDATE cnt SET del=del+1;
+CREATE TRIGGER tr2 AFTER DELETE ON t1 FOR EACH ROW
+DELETE FROM t2 WHERE c1> (SELECT count(*)-1 FROM t2);
+CREATE TABLE tmp as SELECT * FROM t1 WHERE c2>=3;
+DELETE FROM t1 WHERE c2>=3;
+affected rows: 20
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+11 1 11
+11 2 12
+12 1 14
+12 2 15
+2 1 4
+2 2 5
+21 2 21
+22 2 24
+31 2 31
+32 2 34
+SELECT * FROM t2;
+c1
+SELECT * FROM cnt;
+del
+20
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+DROP TRIGGER tr1;
+DROP TRIGGER tr2;
+drop table t2, cnt, tmp;
+#
+# Delete with a reference to view in subquery
+#
+create table tmp as select * from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+explain select * from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 Using index
+explain delete from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 Using index
+analyze delete from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 100.00 25.00 Using where
+2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 1.00 100.00 100.00 Using index
+select * from t1;
+c1 c2 c3
+1 1 1
+1 3 3
+11 1 11
+11 3 13
+12 1 14
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 3 22
+21 4 23
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 3 32
+31 4 33
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with EXISTS subquery over the updated table
+# in WHERE + non-sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ref t1_c2 t1_c2 5 const 8
+1 PRIMARY a ref t1_c2 t1_c2 5 const 8 Using index; FirstMatch(t1)
+explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ref t1_c2 t1_c2 5 const 8
+1 PRIMARY a ref t1_c2 t1_c2 5 const 8 Using index; FirstMatch(t1)
+delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+affected rows: 8
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+11 1 11
+11 2 12
+12 1 14
+12 2 15
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 4 7
+2 5 8
+21 2 21
+21 4 23
+22 2 24
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 4 33
+32 2 34
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with order by
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL # Using where; Using filesort
+1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c2 # Using index; FirstMatch(t1)
+explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY a index t1_c2 t1_c2 10 NULL # Using where; Using index; LooseScan
+1 PRIMARY t1 ref t1_c2 t1_c2 5 test.a.c2 #
+analyze delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY a index t1_c2 t1_c2 10 NULL # 16.00 20.00 25.00 Using where; Using index; LooseScan
+1 PRIMARY t1 ref t1_c2 t1_c2 5 test.a.c2 # 5.00 5.00 100.00
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+11 1 11
+11 2 12
+12 1 14
+12 2 15
+2 1 4
+2 2 5
+21 2 21
+22 2 24
+31 2 31
+32 2 34
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete from view
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+explain select * from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ref t1_c2 t1_c2 5 const 8 Using where
+2 DEPENDENT SUBQUERY a ref t1_c2 t1_c2 5 test.t1.c2 5 Using index
+explain delete from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ref t1_c2 t1_c2 5 const 8 Using where
+2 DEPENDENT SUBQUERY a ref t1_c2 t1_c2 5 test.t1.c2 5 Using index
+delete from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+affected rows: 0
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete from view using reference
+# to the same view in subquery
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status Table is already up to date
+create table tmp as select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+explain select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ref t1_c2 t1_c2 10 const,const # Using where
+1 PRIMARY t1 ref t1_c2 t1_c2 10 const,const # Using index; FirstMatch(t1)
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL # Using where
+explain delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ref t1_c2 t1_c2 10 const,const # Using where
+3 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,func # Using where; Using index
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL # Using where
+analyze delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY t1 ref t1_c2 t1_c2 10 const,const # 1.00 100.00 100.00 Using where
+3 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,func # 1.00 100.00 100.00 Using where; Using index
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL # 32.00 100.00 3.12 Using where
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#######################################
+# Test with a primary key #
+#######################################
+drop index t1_c2 on t1;
+alter table t1 add primary key (c3);
+#
+# Delete with value from subquery on the same table
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+explain select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using index
+explain delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using index
+delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+affected rows: 4
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with EXISTS subquery over the updated table
+# in WHERE + possibly sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+explain select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+analyze delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 9.38 9.38 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 13.33 100.00 5.00 Using where; FirstMatch(t1)
+select * from t1;
+c1 c2 c3
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with IN predicand over the updated table in WHERE
+#
+create table tmp as select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+explain select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; Start temporary
+1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c1 1 Using where; End temporary
+explain delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; Start temporary
+1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c1 1 Using where; End temporary
+delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+affected rows: 8
+select * from t1;
+c1 c2 c3
+1 3 3
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with a limit - can be deleted
+#
+create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+explain select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; Start temporary
+1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c2 1 Using where; End temporary
+explain delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; Start temporary
+1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c2 1 Using where; End temporary
+analyze delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY a ALL NULL NULL NULL NULL 32 4.00 100.00 100.00 Using where; Start temporary
+1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c2 1 1.00 3.12 25.00 Using where; End temporary
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with a limit and an order by
+#
+create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+explain select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 index PRIMARY PRIMARY 4 NULL 1
+1 PRIMARY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using where
+explain delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 index NULL PRIMARY 4 NULL 1 Using where
+2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using where
+delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+affected rows: 1
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete: 2 execution of PS
+#
+prepare create_tmp_stmt from
+"create table tmp as select * from t1
+ where c2=(select a.c3 from t1 a where a.c3 = ?)";
+prepare delete_t1_stmt from
+"delete from t1 where c2=(select a.c3 from t1 a where a.c3 = ?)";
+set @a:=5;
+execute create_tmp_stmt using @a;
+execute delete_t1_stmt using @a;
+execute delete_t1_stmt using @a;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 6 38
+prepare insert_tmp_stmt from
+"insert into tmp(c1,c2,c3) select * from t1
+ where c2=(select a.c3 from t1 a where a.c3 = ?)";
+set @a:=2;
+execute insert_tmp_stmt using @a;
+execute delete_t1_stmt using @a;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 3 3
+11 1 11
+11 3 13
+12 1 14
+12 3 16
+12 4 17
+2 1 4
+2 3 6
+2 4 7
+21 3 22
+21 4 23
+22 3 25
+22 4 26
+22 6 28
+31 3 32
+31 4 33
+32 3 35
+32 4 36
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+drop table tmp;
+#
+# Delete in stored procedure
+#
+create procedure sp()
+begin
+delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+end
+//
+create table tmp as select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+insert into tmp(c1,c2,c3) select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+insert into tmp(c1,c2,c3) select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop procedure sp;
+drop table tmp;
+#
+# Delete in stored function
+#
+create function f1(IN a INT) returns int
+begin
+delete from t1 where c3 < a order by c3 limit 1;
+return 1;
+end;//
+set @a:=7;
+create table tmp as select * from t1 where c3 < @a
+order by c3 limit 1;
+select f1(@a);
+f1(@a)
+1
+insert into tmp(c1,c2,c3) select * from t1 where c3 < @a
+order by c3 limit 1;
+select f1(@a);
+f1(@a)
+1
+select * from t1;
+c1 c2 c3
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop function f1;
+drop table tmp;
+#
+# Delete in trigger
+#
+create table t2 (c1 integer);
+insert into t2(c1) values (1), (2), (3), (4), (5), (6), (7), (8);
+CREATE TABLE cnt(del integer);
+INSERT INTO cnt VALUES(0);
+CREATE TRIGGER tr1 AFTER DELETE ON t1 FOR EACH ROW
+UPDATE cnt SET del=del+1;
+CREATE TRIGGER tr2 AFTER DELETE ON t1 FOR EACH ROW
+DELETE FROM t2 WHERE c1> (SELECT count(*)-1 FROM t2);
+CREATE TABLE tmp as SELECT * FROM t1 WHERE c2>=3;
+DELETE FROM t1 WHERE c2>=3;
+affected rows: 20
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+11 1 11
+11 2 12
+12 1 14
+12 2 15
+2 1 4
+2 2 5
+21 2 21
+22 2 24
+31 2 31
+32 2 34
+SELECT * FROM t2;
+c1
+SELECT * FROM cnt;
+del
+20
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+DROP TRIGGER tr1;
+DROP TRIGGER tr2;
+drop table t2, cnt, tmp;
+#
+# Delete with a reference to view in subquery
+#
+create table tmp as select * from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+explain select * from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+explain delete from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+analyze delete from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 100.00 25.00 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 32.00 25.00 3.12 Using where
+select * from t1;
+c1 c2 c3
+1 1 1
+1 3 3
+11 1 11
+11 3 13
+12 1 14
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 3 22
+21 4 23
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 3 32
+31 4 33
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with EXISTS subquery over the updated table
+# in WHERE + non-sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+affected rows: 8
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+11 1 11
+11 2 12
+12 1 14
+12 2 15
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 4 7
+2 5 8
+21 2 21
+21 4 23
+22 2 24
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 4 33
+32 2 34
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with order by
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where; Using filesort
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func #
+2 MATERIALIZED a ALL NULL NULL NULL NULL #
+explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func #
+2 MATERIALIZED a ALL NULL NULL NULL NULL #
+analyze delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL # 32.00 62.50 62.50 Using where
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func # 1.00 100.00 100.00
+2 MATERIALIZED a ALL NULL NULL NULL NULL # 32.00 62.50 100.00
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+11 1 11
+11 2 12
+12 1 14
+12 2 15
+2 1 4
+2 2 5
+21 2 21
+22 2 24
+31 2 31
+32 2 34
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete from view
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+explain select * from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 const PRIMARY PRIMARY 4 const 1
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+explain delete from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 const PRIMARY PRIMARY 4 const 1
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+delete from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+affected rows: 0
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete from view using reference
+# to the same view in subquery
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status Table is already up to date
+create table tmp as select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+explain select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where
+1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 #
+explain delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where
+3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL # Using where
+2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 #
+analyze delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL # 32.00 3.91 3.12 Using where
+3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL # 3.00 25.00 33.33 Using where
+2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 # 1.00 100.00 100.00
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+drop view v1;
+drop table t1;
+#
+# Test on dynamic columns (blob)
+#
+create table assets (
+item_name varchar(32) primary key, -- A common attribute for all items
+dynamic_cols blob -- Dynamic columns will be stored here
+);
+INSERT INTO assets
+VALUES ('MariaDB T-shirt',
+COLUMN_CREATE('color', 'blue', 'size', 'XL'));
+INSERT INTO assets
+VALUES ('Thinkpad Laptop',
+COLUMN_CREATE('color', 'black', 'price', 500));
+INSERT INTO assets
+VALUES ('Fridge',
+COLUMN_CREATE('color', 'white', 'warranty', '5 years'));
+INSERT INTO assets
+VALUES ('Microwave',
+COLUMN_CREATE('warranty', '3 years'));
+SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color
+FROM assets ORDER BY item_name;
+item_name color
+Fridge white
+MariaDB T-shirt blue
+Microwave NULL
+Thinkpad Laptop black
+UPDATE assets SET dynamic_cols=COLUMN_DELETE(dynamic_cols, 'color')
+WHERE item_name='Fridge';
+SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color
+FROM assets ORDER BY item_name;
+item_name color
+Fridge NULL
+MariaDB T-shirt blue
+Microwave NULL
+Thinkpad Laptop black
+DELETE FROM assets
+WHERE item_name in
+(select b.item_name from assets b
+where COLUMN_GET(b.dynamic_cols, 'color' as char) ='black');
+SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color
+FROM assets ORDER BY item_name;
+item_name color
+Fridge NULL
+MariaDB T-shirt blue
+Microwave NULL
+DELETE FROM assets WHERE item_name='Microwave';
+SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color
+FROM assets ORDER BY item_name;
+item_name color
+Fridge NULL
+MariaDB T-shirt blue
+drop table assets ;
+#
+# Test on fulltext columns
+#
+CREATE TABLE ft2(copy TEXT,FULLTEXT(copy));
+INSERT INTO ft2(copy) VALUES
+('MySQL vs MariaDB database'),
+('Oracle vs MariaDB database'),
+('PostgreSQL vs MariaDB database'),
+('MariaDB overview'),
+('Foreign keys'),
+('Primary keys'),
+('Indexes'),
+('Transactions'),
+('Triggers');
+SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('database');
+copy
+MySQL vs MariaDB database
+Oracle vs MariaDB database
+PostgreSQL vs MariaDB database
+DELETE FROM ft2 WHERE MATCH(copy) AGAINST('database');
+SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('database');
+copy
+drop table ft2;
+#######################################
+# #
+# Engine MEMORY #
+# #
+#######################################
+set default_storage_engine=MEMORY;
+create table t1 (c1 integer, c2 integer, c3 integer);
+insert into t1(c1,c2,c3)
+values (1,1,1),(1,2,2),(1,3,3),
+(2,1,4),(2,2,5),(2,3,6),
+(2,4,7),(2,5,8);
+insert into t1 select c1+10,c2,c3+10 from t1;
+insert into t1 select c1+20,c2+1,c3+20 from t1;
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+create view v1 as select * from t1 where c2=2;
+#######################################
+# Test without any index #
+#######################################
+#
+# Delete with value from subquery on the same table
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+create table tmp as select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+explain select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+explain delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+affected rows: 4
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with EXISTS subquery over the updated table
+# in WHERE + possibly sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+create table tmp as select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+explain select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+affected rows: 2
+select * from t1;
+c1 c2 c3
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with EXISTS subquery over the updated table
+# in WHERE + non-sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+affected rows: 8
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+11 1 11
+11 2 12
+12 1 14
+12 2 15
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 4 7
+2 5 8
+21 2 21
+21 4 23
+22 2 24
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 4 33
+32 2 34
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with order by
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
+explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
+delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+affected rows: 20
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+11 1 11
+11 2 12
+12 1 14
+12 2 15
+2 1 4
+2 2 5
+21 2 21
+22 2 24
+31 2 31
+32 2 34
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with IN predicand over the updated table in WHERE
+#
+create table tmp as select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+explain select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+affected rows: 8
+select * from t1;
+c1 c2 c3
+1 3 3
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with a limit - can be deleted
+#
+create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+explain select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+affected rows: 1
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with a limit and an order by
+#
+create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+explain select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using temporary; Using filesort
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+affected rows: 1
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete: 2 execution of PS
+#
+prepare create_tmp_stmt from
+"create table tmp as select * from t1
+ where c2=(select a.c3 from t1 a where a.c3 = ?)";
+prepare delete_t1_stmt from
+"delete from t1 where c2=(select a.c3 from t1 a where a.c3 = ?)";
+set @a:=5;
+execute create_tmp_stmt using @a;
+execute delete_t1_stmt using @a;
+execute delete_t1_stmt using @a;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 6 38
+prepare insert_tmp_stmt from
+"insert into tmp(c1,c2,c3) select * from t1
+ where c2=(select a.c3 from t1 a where a.c3 = ?)";
+set @a:=2;
+execute insert_tmp_stmt using @a;
+execute delete_t1_stmt using @a;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 3 3
+11 1 11
+11 3 13
+12 1 14
+12 3 16
+12 4 17
+2 1 4
+2 3 6
+2 4 7
+21 3 22
+21 4 23
+22 3 25
+22 4 26
+22 6 28
+31 3 32
+31 4 33
+32 3 35
+32 4 36
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+drop table tmp;
+#
+# Delete in stored procedure
+#
+create procedure sp()
+begin
+delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+end
+//
+create table tmp as select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+insert into tmp(c1,c2,c3) select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+insert into tmp(c1,c2,c3) select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop procedure sp;
+drop table tmp;
+#
+# Delete in stored function
+#
+create function f1(IN a INT) returns int
+begin
+delete from t1 where c3 < a order by c3 limit 1;
+return 1;
+end;//
+set @a:=7;
+create table tmp as select * from t1 where c3 < @a
+order by c3 limit 1;
+select f1(@a);
+f1(@a)
+1
+insert into tmp(c1,c2,c3) select * from t1 where c3 < @a
+order by c3 limit 1;
+select f1(@a);
+f1(@a)
+1
+select * from t1;
+c1 c2 c3
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop function f1;
+drop table tmp;
+#
+# Delete in trigger
+#
+create table t2 (c1 integer);
+insert into t2(c1) values (1), (2), (3), (4), (5), (6), (7), (8);
+CREATE TABLE cnt(del integer);
+INSERT INTO cnt VALUES(0);
+CREATE TRIGGER tr1 AFTER DELETE ON t1 FOR EACH ROW
+UPDATE cnt SET del=del+1;
+CREATE TRIGGER tr2 AFTER DELETE ON t1 FOR EACH ROW
+DELETE FROM t2 WHERE c1> (SELECT count(*)-1 FROM t2);
+CREATE TABLE tmp as SELECT * FROM t1 WHERE c2>=3;
+DELETE FROM t1 WHERE c2>=3;
+affected rows: 20
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+11 1 11
+11 2 12
+12 1 14
+12 2 15
+2 1 4
+2 2 5
+21 2 21
+22 2 24
+31 2 31
+32 2 34
+SELECT * FROM t2;
+c1
+SELECT * FROM cnt;
+del
+20
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+DROP TRIGGER tr1;
+DROP TRIGGER tr2;
+drop table t2, cnt, tmp;
+#
+Delete with a reference to view in subquery
+#
+create table tmp as select * from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+explain select * from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+explain delete from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+delete from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+affected rows: 8
+select * from t1;
+c1 c2 c3
+1 1 1
+1 3 3
+11 1 11
+11 3 13
+12 1 14
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 3 22
+21 4 23
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 3 32
+31 4 33
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete from view
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+create table tmp as select * from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+explain select * from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+explain delete from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+delete from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+affected rows: 0
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete from view using reference
+# to the same view in subquery
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+create table tmp as select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+explain select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+explain delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+affected rows: 1
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#######################################
+# Test with an index #
+#######################################
+create index t1_c2 on t1 (c2,c1);
+#
+# Delete with value from subquery on the same table
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Operation failed
+create table tmp as select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+explain select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+explain delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+affected rows: 4
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with EXISTS subquery over the updated table
+# in WHERE + possibly sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Operation failed
+create table tmp as select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+explain select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+affected rows: 2
+select * from t1;
+c1 c2 c3
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with EXISTS subquery over the updated table
+# in WHERE + non-sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Operation failed
+create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+1 PRIMARY a ALL t1_c2 NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+1 PRIMARY a ALL t1_c2 NULL NULL NULL 32 Using where; FirstMatch(t1)
+delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+affected rows: 8
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+11 1 11
+11 2 12
+12 1 14
+12 2 15
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 4 7
+2 5 8
+21 2 21
+21 4 23
+22 2 24
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 4 33
+32 2 34
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with order by
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Operation failed
+create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where; Using filesort
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL t1_c2 NULL NULL NULL 32
+explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL t1_c2 NULL NULL NULL 32
+delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+affected rows: 20
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+11 1 11
+11 2 12
+12 1 14
+12 2 15
+2 1 4
+2 2 5
+21 2 21
+22 2 24
+31 2 31
+32 2 34
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with IN predicand over the updated table in WHERE
+#
+create table tmp as select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+explain select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+1 PRIMARY a ref t1_c2 t1_c2 10 test.t1.c2,test.t1.c3 2 FirstMatch(t1)
+explain delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+1 PRIMARY a ref t1_c2 t1_c2 10 test.t1.c2,test.t1.c3 2 FirstMatch(t1)
+delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+affected rows: 8
+select * from t1;
+c1 c2 c3
+1 3 3
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with a limit - can be deleted
+#
+create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+explain select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL t1_c2 NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL t1_c2 NULL NULL NULL 32 Using where; FirstMatch(t1)
+delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+affected rows: 1
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with a limit and an order by
+#
+create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+explain select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using temporary; Using filesort
+1 PRIMARY a ALL t1_c2 NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort
+2 DEPENDENT SUBQUERY a ALL t1_c2 NULL NULL NULL 32 Using where
+delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+affected rows: 1
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete: 2 execution of PS
+#
+prepare create_tmp_stmt from
+"create table tmp as select * from t1
+ where c2=(select a.c3 from t1 a where a.c3 = ?)";
+prepare delete_t1_stmt from
+"delete from t1 where c2=(select a.c3 from t1 a where a.c3 = ?)";
+set @a:=5;
+execute create_tmp_stmt using @a;
+execute delete_t1_stmt using @a;
+execute delete_t1_stmt using @a;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 6 38
+prepare insert_tmp_stmt from
+"insert into tmp(c1,c2,c3) select * from t1
+ where c2=(select a.c3 from t1 a where a.c3 = ?)";
+set @a:=2;
+execute insert_tmp_stmt using @a;
+execute delete_t1_stmt using @a;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 3 3
+11 1 11
+11 3 13
+12 1 14
+12 3 16
+12 4 17
+2 1 4
+2 3 6
+2 4 7
+21 3 22
+21 4 23
+22 3 25
+22 4 26
+22 6 28
+31 3 32
+31 4 33
+32 3 35
+32 4 36
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+drop table tmp;
+#
+# Delete in stored procedure
+#
+create procedure sp()
+begin
+delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+end
+//
+create table tmp as select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+insert into tmp(c1,c2,c3) select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+insert into tmp(c1,c2,c3) select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop procedure sp;
+drop table tmp;
+#
+# Delete in stored function
+#
+create function f1(IN a INT) returns int
+begin
+delete from t1 where c3 < a order by c3 limit 1;
+return 1;
+end;//
+set @a:=7;
+create table tmp as select * from t1 where c3 < @a
+order by c3 limit 1;
+select f1(@a);
+f1(@a)
+1
+insert into tmp(c1,c2,c3) select * from t1 where c3 < @a
+order by c3 limit 1;
+select f1(@a);
+f1(@a)
+1
+select * from t1;
+c1 c2 c3
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop function f1;
+drop table tmp;
+#
+# Delete in trigger
+#
+create table t2 (c1 integer);
+insert into t2(c1) values (1), (2), (3), (4), (5), (6), (7), (8);
+CREATE TABLE cnt(del integer);
+INSERT INTO cnt VALUES(0);
+CREATE TRIGGER tr1 AFTER DELETE ON t1 FOR EACH ROW
+UPDATE cnt SET del=del+1;
+CREATE TRIGGER tr2 AFTER DELETE ON t1 FOR EACH ROW
+DELETE FROM t2 WHERE c1> (SELECT count(*)-1 FROM t2);
+CREATE TABLE tmp as SELECT * FROM t1 WHERE c2>=3;
+DELETE FROM t1 WHERE c2>=3;
+affected rows: 20
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+11 1 11
+11 2 12
+12 1 14
+12 2 15
+2 1 4
+2 2 5
+21 2 21
+22 2 24
+31 2 31
+32 2 34
+SELECT * FROM t2;
+c1
+SELECT * FROM cnt;
+del
+20
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+DROP TRIGGER tr1;
+DROP TRIGGER tr2;
+drop table t2, cnt, tmp;
+#
+Delete with a reference to view in subquery
+#
+create table tmp as select * from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+explain select * from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 2
+explain delete from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 2
+delete from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+affected rows: 8
+select * from t1;
+c1 c2 c3
+1 1 1
+1 3 3
+11 1 11
+11 3 13
+12 1 14
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 3 22
+21 4 23
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 3 32
+31 4 33
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete from view
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Operation failed
+create table tmp as select * from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+explain select * from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a ALL t1_c2 NULL NULL NULL 32 Using where
+explain delete from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a ALL t1_c2 NULL NULL NULL 32 Using where
+delete from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+affected rows: 0
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete from view using reference
+# to the same view in subquery
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Operation failed
+create table tmp as select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+explain select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ref t1_c2 t1_c2 10 const,const 2 Using where
+1 PRIMARY t1 ref t1_c2 t1_c2 10 const,const 2 FirstMatch(t1)
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+explain delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ref t1_c2 t1_c2 10 const,const 2 Using where
+3 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,func 2 Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+affected rows: 1
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#######################################
+# Test with a primary key #
+#######################################
+drop index t1_c2 on t1;
+alter table t1 add primary key (c3);
+#
+# Delete with value from subquery on the same table
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+create table tmp as select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+explain select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1
+explain delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1
+delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+affected rows: 4
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with EXISTS subquery over the updated table
+# in WHERE + possibly sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+create table tmp as select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+explain select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2);
+affected rows: 2
+select * from t1;
+c1 c2 c3
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with EXISTS subquery over the updated table
+# in WHERE + non-sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3;
+affected rows: 8
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+11 1 11
+11 2 12
+12 1 14
+12 2 15
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 4 7
+2 5 8
+21 2 21
+21 4 23
+22 2 24
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 4 33
+32 2 34
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with order by
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
+explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
+delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+affected rows: 20
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+11 1 11
+11 2 12
+12 1 14
+12 2 15
+2 1 4
+2 2 5
+21 2 21
+22 2 24
+31 2 31
+32 2 34
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with IN predicand over the updated table in WHERE
+#
+create table tmp as select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+explain select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; Start temporary
+1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c1 1 Using where; End temporary
+explain delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; Start temporary
+1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c1 1 Using where; End temporary
+delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2);
+affected rows: 8
+select * from t1;
+c1 c2 c3
+1 3 3
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with a limit - can be deleted
+#
+create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+explain select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; Start temporary
+1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c2 1 Using where; End temporary
+explain delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; Start temporary
+1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c2 1 Using where; End temporary
+delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1;
+affected rows: 1
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete with a limit and an order by
+#
+create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+explain select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL PRIMARY NULL NULL NULL 32 Using filesort
+1 PRIMARY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using where
+explain delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort
+2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using where
+delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+affected rows: 1
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete: 2 execution of PS
+#
+prepare create_tmp_stmt from
+"create table tmp as select * from t1
+ where c2=(select a.c3 from t1 a where a.c3 = ?)";
+prepare delete_t1_stmt from
+"delete from t1 where c2=(select a.c3 from t1 a where a.c3 = ?)";
+set @a:=5;
+execute create_tmp_stmt using @a;
+execute delete_t1_stmt using @a;
+execute delete_t1_stmt using @a;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 6 38
+prepare insert_tmp_stmt from
+"insert into tmp(c1,c2,c3) select * from t1
+ where c2=(select a.c3 from t1 a where a.c3 = ?)";
+set @a:=2;
+execute insert_tmp_stmt using @a;
+execute delete_t1_stmt using @a;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 3 3
+11 1 11
+11 3 13
+12 1 14
+12 3 16
+12 4 17
+2 1 4
+2 3 6
+2 4 7
+21 3 22
+21 4 23
+22 3 25
+22 4 26
+22 6 28
+31 3 32
+31 4 33
+32 3 35
+32 4 36
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+drop table tmp;
+#
+# Delete in stored procedure
+#
+create procedure sp()
+begin
+delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+end
+//
+create table tmp as select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+insert into tmp(c1,c2,c3) select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+insert into tmp(c1,c2,c3) select * from t1
+where c1 in (select a.c2 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 1;
+CALL sp;
+select * from t1;
+c1 c2 c3
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop procedure sp;
+drop table tmp;
+#
+# Delete in stored function
+#
+create function f1(IN a INT) returns int
+begin
+delete from t1 where c3 < a order by c3 limit 1;
+return 1;
+end;//
+set @a:=7;
+create table tmp as select * from t1 where c3 < @a
+order by c3 limit 1;
+select f1(@a);
+f1(@a)
+1
+insert into tmp(c1,c2,c3) select * from t1 where c3 < @a
+order by c3 limit 1;
+select f1(@a);
+f1(@a)
+1
+select * from t1;
+c1 c2 c3
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop function f1;
+drop table tmp;
+#
+# Delete in trigger
+#
+create table t2 (c1 integer);
+insert into t2(c1) values (1), (2), (3), (4), (5), (6), (7), (8);
+CREATE TABLE cnt(del integer);
+INSERT INTO cnt VALUES(0);
+CREATE TRIGGER tr1 AFTER DELETE ON t1 FOR EACH ROW
+UPDATE cnt SET del=del+1;
+CREATE TRIGGER tr2 AFTER DELETE ON t1 FOR EACH ROW
+DELETE FROM t2 WHERE c1> (SELECT count(*)-1 FROM t2);
+CREATE TABLE tmp as SELECT * FROM t1 WHERE c2>=3;
+DELETE FROM t1 WHERE c2>=3;
+affected rows: 20
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+11 1 11
+11 2 12
+12 1 14
+12 2 15
+2 1 4
+2 2 5
+21 2 21
+22 2 24
+31 2 31
+32 2 34
+SELECT * FROM t2;
+c1
+SELECT * FROM cnt;
+del
+20
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+DROP TRIGGER tr1;
+DROP TRIGGER tr2;
+drop table t2, cnt, tmp;
+#
+Delete with a reference to view in subquery
+#
+create table tmp as select * from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+explain select * from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+explain delete from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+delete from t1 where t1.c2 in ( select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+affected rows: 8
+select * from t1;
+c1 c2 c3
+1 1 1
+1 3 3
+11 1 11
+11 3 13
+12 1 14
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 3 22
+21 4 23
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 3 32
+31 4 33
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete from view
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+create table tmp as select * from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+explain select * from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 const PRIMARY PRIMARY 4 const 1
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+explain delete from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 const PRIMARY PRIMARY 4 const 1
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+delete from v1 where v1.c1 in
+(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5;
+affected rows: 0
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+#
+# Delete from view using reference
+# to the same view in subquery
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+create table tmp as select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+explain select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1
+explain delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1
+delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3)
+and c1 = 2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+affected rows: 1
+select * from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+insert into t1(c1,c2,c3) select c1,c2,c3 from tmp;
+drop table tmp;
+drop view v1;
+drop table t1;
+set @@default_storage_engine=@save_default_engine;
+#
+# End of 11.0 tests
+#
diff --git a/mysql-test/main/delete_use_source_engines.test b/mysql-test/main/delete_use_source_engines.test
new file mode 100644
index 00000000000..1a0d98f8399
--- /dev/null
+++ b/mysql-test/main/delete_use_source_engines.test
@@ -0,0 +1,42 @@
+--source include/have_innodb.inc
+
+set @save_default_engine=@@default_storage_engine;
+
+--echo #######################################
+--echo # #
+--echo # Engine InnoDB #
+--echo # #
+--echo #######################################
+set global innodb_stats_persistent=1;
+set default_storage_engine=InnoDB;
+--source include/delete_use_source_innodb.inc
+
+--echo #######################################
+--echo # #
+--echo # Engine Aria #
+--echo # #
+--echo #######################################
+set default_storage_engine=Aria;
+--source include/delete_use_source.inc
+
+--echo #######################################
+--echo # #
+--echo # Engine MyISAM #
+--echo # #
+--echo #######################################
+set default_storage_engine=MyISAM;
+--source include/delete_use_source.inc
+
+--echo #######################################
+--echo # #
+--echo # Engine MEMORY #
+--echo # #
+--echo #######################################
+set default_storage_engine=MEMORY;
+--source include/delete_use_source_memory.inc
+
+set @@default_storage_engine=@save_default_engine;
+
+--echo #
+--echo # End of 11.0 tests
+--echo #
diff --git a/mysql-test/main/update_single_to_multi.result b/mysql-test/main/update_single_to_multi.result
index 11969f7e072..679237837cc 100644
--- a/mysql-test/main/update_single_to_multi.result
+++ b/mysql-test/main/update_single_to_multi.result
@@ -3242,4 +3242,619 @@ o_orderkey o_totalprice
3139 40975.96
4903 34363.63
5607 24660.06
+CREATE TABLE partsupp_small (
+ps_partkey int(11) NOT NULL DEFAULT '0',
+ps_suppkey int(11) NOT NULL DEFAULT '0',
+ps_availqty int(11) DEFAULT NULL,
+ps_supplycost double DEFAULT NULL,
+ps_comment varchar(199) DEFAULT NULL,
+PRIMARY KEY (ps_partkey,ps_suppkey),
+KEY i_ps_partkey (ps_partkey),
+KEY i_ps_suppkey (ps_suppkey)
+);
+create index i_ps_sup_part on partsupp_small(ps_suppkey, ps_partkey);
+insert into partsupp_small select * from partsupp where ps_partkey <50;
+analyze table partsupp_small persistent for all;
+Table Op Msg_type Msg_text
+dbt3_s001.partsupp_small analyze status Engine-independent statistics collected
+dbt3_s001.partsupp_small analyze status OK
+# LooseScan
+# =========
+explain
+select count(*) from lineitem where l_suppkey in
+(select ps_suppkey from partsupp_small
+where ps_partkey in (1,2,3));
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY partsupp_small index PRIMARY,i_ps_partkey,i_ps_suppkey,i_ps_sup_part i_ps_sup_part 8 NULL 176 Using where; Using index; LooseScan
+1 PRIMARY lineitem ref i_l_suppkey i_l_suppkey 5 dbt3_s001.partsupp_small.ps_suppkey 600 Using index
+explain format=json
+select count(*) from lineitem where l_suppkey in
+(select ps_suppkey from partsupp_small
+where ps_partkey in (1,2,3));
+EXPLAIN
+{
+ "query_block": {
+ "select_id": 1,
+ "cost": 0.776623555,
+ "nested_loop": [
+ {
+ "table": {
+ "table_name": "partsupp_small",
+ "access_type": "index",
+ "possible_keys": [
+ "PRIMARY",
+ "i_ps_partkey",
+ "i_ps_suppkey",
+ "i_ps_sup_part"
+ ],
+ "key": "i_ps_sup_part",
+ "key_length": "8",
+ "used_key_parts": ["ps_suppkey", "ps_partkey"],
+ "loops": 1,
+ "rows": 176,
+ "cost": 0.019403477,
+ "filtered": 5.113636494,
+ "attached_condition": "partsupp_small.ps_partkey in (1,2,3)",
+ "using_index": true,
+ "loose_scan": true
+ }
+ },
+ {
+ "table": {
+ "table_name": "lineitem",
+ "access_type": "ref",
+ "possible_keys": ["i_l_suppkey"],
+ "key": "i_l_suppkey",
+ "key_length": "5",
+ "used_key_parts": ["l_suppkey"],
+ "ref": ["dbt3_s001.partsupp_small.ps_suppkey"],
+ "loops": 9,
+ "rows": 600,
+ "cost": 0.757220078,
+ "filtered": 11.11111069,
+ "using_index": true
+ }
+ }
+ ]
+ }
+}
+select count(*) from lineitem where l_suppkey in
+(select ps_suppkey from partsupp_small
+where ps_partkey in (1,2,3));
+count(*)
+5373
+select 5373 as count, 136458704.22 as old_sum;
+count old_sum
+5373 136458704.22
+explain
+update lineitem set l_extendedprice=l_extendedprice+10 where l_suppkey in
+(select ps_suppkey from partsupp_small
+where ps_partkey in (1,2,3));
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY lineitem ALL i_l_suppkey NULL NULL NULL 6005
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED partsupp_small range PRIMARY,i_ps_partkey,i_ps_suppkey,i_ps_sup_part PRIMARY 4 NULL 9 Using where; Using index
+explain format=json
+update lineitem set l_extendedprice=l_extendedprice+10 where l_suppkey in
+(select ps_suppkey from partsupp_small
+where ps_partkey in (1,2,3));
+EXPLAIN
+{
+ "query_block": {
+ "select_id": 1,
+ "cost": 2.191459679,
+ "nested_loop": [
+ {
+ "table": {
+ "table_name": "lineitem",
+ "access_type": "ALL",
+ "possible_keys": ["i_l_suppkey"],
+ "loops": 1,
+ "rows": 6005,
+ "cost": 0.988432825,
+ "filtered": 100
+ }
+ },
+ {
+ "table": {
+ "table_name": "<subquery2>",
+ "access_type": "eq_ref",
+ "possible_keys": ["distinct_key"],
+ "key": "distinct_key",
+ "key_length": "4",
+ "used_key_parts": ["ps_suppkey"],
+ "ref": ["func"],
+ "rows": 1,
+ "filtered": 100,
+ "materialized": {
+ "unique": 1,
+ "query_block": {
+ "select_id": 2,
+ "nested_loop": [
+ {
+ "table": {
+ "table_name": "partsupp_small",
+ "access_type": "range",
+ "possible_keys": [
+ "PRIMARY",
+ "i_ps_partkey",
+ "i_ps_suppkey",
+ "i_ps_sup_part"
+ ],
+ "key": "PRIMARY",
+ "key_length": "4",
+ "used_key_parts": ["ps_partkey"],
+ "loops": 1,
+ "rows": 9,
+ "cost": 0.003756598,
+ "filtered": 100,
+ "attached_condition": "partsupp_small.ps_partkey in (1,2,3)",
+ "using_index": true
+ }
+ }
+ ]
+ }
+ }
+ }
+ }
+ ]
+ }
+}
+update lineitem set l_extendedprice=l_extendedprice+10 where l_suppkey in
+(select ps_suppkey from partsupp_small
+where ps_partkey in (1,2,3));
+select ROUND(sum(l_extendedprice),2), 5373 as count,
+(136458704.22+10*5373) as 'old_sum+10*count'
+ from lineitem where l_suppkey in
+(select ps_suppkey from partsupp_small
+where ps_partkey in (1,2,3));
+ROUND(sum(l_extendedprice),2) count old_sum+10*count
+136512434.22 5373 136512434.22
+update lineitem set l_extendedprice=l_extendedprice-10 where l_suppkey in
+(select ps_suppkey from partsupp_small
+where ps_partkey in (1,2,3));
+select ROUND(sum(l_extendedprice),2), 5373 as count,
+136458704.22 as old_sum from lineitem where l_suppkey in
+(select ps_suppkey from partsupp_small
+where ps_partkey in (1,2,3));
+ROUND(sum(l_extendedprice),2) count old_sum
+136458704.22 5373 136458704.22
+# LooseScan PS
+# ============
+prepare stmt from "
+update lineitem set l_extendedprice=l_extendedprice+? where l_suppkey in
+(select ps_suppkey from partsupp_small
+where ps_partkey in (1,2,3));
+";
+select 5373 as count, 136458704.22 as old_sum;
+count old_sum
+5373 136458704.22
+set @a1=20;
+execute stmt using @a1;
+select ROUND(sum(l_extendedprice),2), 5373 as count,
+(136458704.22+20*5373) as 'old_sum+20*count'
+ from lineitem where l_suppkey in
+(select ps_suppkey from partsupp_small
+where ps_partkey in (1,2,3));
+ROUND(sum(l_extendedprice),2) count old_sum+20*count
+136566164.22 5373 136566164.22
+set @a2=10;
+execute stmt using @a2;
+select ROUND(sum(l_extendedprice),2), 5373 as count,
+(136458704.22+30*5373) as 'old_sum+30*count'
+ from lineitem where l_suppkey in
+(select ps_suppkey from partsupp_small
+where ps_partkey in (1,2,3));
+ROUND(sum(l_extendedprice),2) count old_sum+30*count
+136619894.22 5373 136619894.22
+execute stmt using -(@a1+@a2);
+select ROUND(sum(l_extendedprice),2), 5373 as count,
+136458704.22 as old_sum from lineitem where l_suppkey in
+(select ps_suppkey from partsupp_small
+where ps_partkey in (1,2,3));
+ROUND(sum(l_extendedprice),2) count old_sum
+136458704.22 5373 136458704.22
+deallocate prepare stmt;
+# LooseScan SP
+# ============
+create procedure p(d int)
+update lineitem set l_extendedprice=l_extendedprice+d where l_suppkey in
+(select ps_suppkey from partsupp_small
+where ps_partkey in (1,2,3));
+select 5373 as count, 136458704.22 as old_sum;
+count old_sum
+5373 136458704.22
+call p(10);
+select ROUND(sum(l_extendedprice),2), 5373 as count,
+(136458704.22+10*5373) as 'old_sum+10*count'
+ from lineitem where l_suppkey in
+(select ps_suppkey from partsupp_small
+where ps_partkey in (1,2,3));
+ROUND(sum(l_extendedprice),2) count old_sum+10*count
+136512434.22 5373 136512434.22
+call p(20);
+select ROUND(sum(l_extendedprice),2), 5373 as count,
+(136458704.22+30*5373) as 'old_sum+30*count'
+ from lineitem where l_suppkey in
+(select ps_suppkey from partsupp_small
+where ps_partkey in (1,2,3));
+ROUND(sum(l_extendedprice),2) count old_sum+30*count
+136619894.22 5373 136619894.22
+call p(-(10+20));
+select ROUND(sum(l_extendedprice),2), 5373 as count,
+136458704.22 as old_sum from lineitem where l_suppkey in
+(select ps_suppkey from partsupp_small
+where ps_partkey in (1,2,3));
+ROUND(sum(l_extendedprice),2) count old_sum
+136458704.22 5373 136458704.22
+drop procedure p;
+# DuplicateWeedout
+# ================
+set @tmp_optimizer_switch= @@optimizer_switch;
+set optimizer_switch='materialization=off';
+analyze table lineitem;
+Table Op Msg_type Msg_text
+dbt3_s001.lineitem analyze status Engine-independent statistics collected
+dbt3_s001.lineitem analyze status OK
+analyze table orders;
+Table Op Msg_type Msg_text
+dbt3_s001.orders analyze status Engine-independent statistics collected
+dbt3_s001.orders analyze status OK
+explain
+select count(*) from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY supplier range PRIMARY PRIMARY 4 NULL 1 Using where; Using index; Start temporary
+1 PRIMARY partsupp_small ref PRIMARY,i_ps_partkey,i_ps_suppkey,i_ps_sup_part i_ps_sup_part 4 dbt3_s001.supplier.s_suppkey 17 Using where; Using index
+1 PRIMARY lineitem ref i_l_suppkey_partkey,i_l_partkey i_l_suppkey_partkey 5 dbt3_s001.partsupp_small.ps_partkey 30 Using index
+1 PRIMARY lineitem ref i_l_suppkey_partkey,i_l_partkey i_l_partkey 5 dbt3_s001.partsupp_small.ps_partkey 30 Using index; End temporary
+explain format=json
+select count(*) from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+EXPLAIN
+{
+ "query_block": {
+ "select_id": 1,
+ "cost": 4.129940741,
+ "nested_loop": [
+ {
+ "duplicates_removal": [
+ {
+ "table": {
+ "table_name": "supplier",
+ "access_type": "range",
+ "possible_keys": ["PRIMARY"],
+ "key": "PRIMARY",
+ "key_length": "4",
+ "used_key_parts": ["s_suppkey"],
+ "loops": 1,
+ "rows": 1,
+ "cost": 0.001478954,
+ "filtered": 100,
+ "attached_condition": "supplier.s_suppkey < 2",
+ "using_index": true
+ }
+ },
+ {
+ "table": {
+ "table_name": "partsupp_small",
+ "access_type": "ref",
+ "possible_keys": [
+ "PRIMARY",
+ "i_ps_partkey",
+ "i_ps_suppkey",
+ "i_ps_sup_part"
+ ],
+ "key": "i_ps_sup_part",
+ "key_length": "4",
+ "used_key_parts": ["ps_suppkey"],
+ "ref": ["dbt3_s001.supplier.s_suppkey"],
+ "loops": 1,
+ "rows": 17,
+ "cost": 0.003160332,
+ "filtered": 79.54545593,
+ "attached_condition": "partsupp_small.ps_partkey is not null",
+ "using_index": true
+ }
+ },
+ {
+ "table": {
+ "table_name": "lineitem",
+ "access_type": "ref",
+ "possible_keys": ["i_l_suppkey_partkey", "i_l_partkey"],
+ "key": "i_l_suppkey_partkey",
+ "key_length": "5",
+ "used_key_parts": ["l_partkey"],
+ "ref": ["dbt3_s001.partsupp_small.ps_partkey"],
+ "loops": 14,
+ "rows": 30,
+ "cost": 0.069152188,
+ "filtered": 100,
+ "using_index": true
+ }
+ },
+ {
+ "table": {
+ "table_name": "lineitem",
+ "access_type": "ref",
+ "possible_keys": ["i_l_suppkey_partkey", "i_l_partkey"],
+ "key": "i_l_partkey",
+ "key_length": "5",
+ "used_key_parts": ["l_partkey"],
+ "ref": ["dbt3_s001.partsupp_small.ps_partkey"],
+ "loops": 420.35,
+ "rows": 30,
+ "cost": 1.994712365,
+ "filtered": 0.237896994,
+ "using_index": true
+ }
+ }
+ ]
+ }
+ ]
+ }
+}
+select count(*) from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+count(*)
+471
+select 471 as count, 10751458.66 as old_sum;
+count old_sum
+471 10751458.66
+explain
+update lineitem set l_extendedprice=l_extendedprice+10 where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY supplier range PRIMARY PRIMARY 4 NULL 1 Using where; Using index; Start temporary
+1 PRIMARY partsupp_small ref PRIMARY,i_ps_partkey,i_ps_suppkey,i_ps_sup_part i_ps_sup_part 4 dbt3_s001.supplier.s_suppkey 17 Using where; Using index
+1 PRIMARY lineitem ref i_l_suppkey_partkey,i_l_partkey i_l_suppkey_partkey 5 dbt3_s001.partsupp_small.ps_partkey 30
+1 PRIMARY lineitem ref i_l_suppkey_partkey,i_l_partkey i_l_partkey 5 dbt3_s001.partsupp_small.ps_partkey 30 Using index; End temporary
+explain format=json
+update lineitem set l_extendedprice=l_extendedprice+10 where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+EXPLAIN
+{
+ "query_block": {
+ "select_id": 1,
+ "cost": 4.590092321,
+ "nested_loop": [
+ {
+ "duplicates_removal": [
+ {
+ "table": {
+ "table_name": "supplier",
+ "access_type": "range",
+ "possible_keys": ["PRIMARY"],
+ "key": "PRIMARY",
+ "key_length": "4",
+ "used_key_parts": ["s_suppkey"],
+ "loops": 1,
+ "rows": 1,
+ "cost": 0.001478954,
+ "filtered": 100,
+ "attached_condition": "supplier.s_suppkey < 2",
+ "using_index": true
+ }
+ },
+ {
+ "table": {
+ "table_name": "partsupp_small",
+ "access_type": "ref",
+ "possible_keys": [
+ "PRIMARY",
+ "i_ps_partkey",
+ "i_ps_suppkey",
+ "i_ps_sup_part"
+ ],
+ "key": "i_ps_sup_part",
+ "key_length": "4",
+ "used_key_parts": ["ps_suppkey"],
+ "ref": ["dbt3_s001.supplier.s_suppkey"],
+ "loops": 1,
+ "rows": 17,
+ "cost": 0.003160332,
+ "filtered": 79.54545593,
+ "attached_condition": "partsupp_small.ps_partkey is not null",
+ "using_index": true
+ }
+ },
+ {
+ "table": {
+ "table_name": "lineitem",
+ "access_type": "ref",
+ "possible_keys": ["i_l_suppkey_partkey", "i_l_partkey"],
+ "key": "i_l_suppkey_partkey",
+ "key_length": "5",
+ "used_key_parts": ["l_partkey"],
+ "ref": ["dbt3_s001.partsupp_small.ps_partkey"],
+ "loops": 14,
+ "rows": 30,
+ "cost": 0.529303768,
+ "filtered": 100
+ }
+ },
+ {
+ "table": {
+ "table_name": "lineitem",
+ "access_type": "ref",
+ "possible_keys": ["i_l_suppkey_partkey", "i_l_partkey"],
+ "key": "i_l_partkey",
+ "key_length": "5",
+ "used_key_parts": ["l_partkey"],
+ "ref": ["dbt3_s001.partsupp_small.ps_partkey"],
+ "loops": 420.35,
+ "rows": 30,
+ "cost": 1.994712365,
+ "filtered": 0.237896994,
+ "using_index": true
+ }
+ }
+ ]
+ }
+ ]
+ }
+}
+update lineitem set l_extendedprice=l_extendedprice+10 where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+select ROUND(sum(l_extendedprice),2), 471 as count,
+(10751458.66+10*471) as 'old_sum+10*count'
+ from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+ROUND(sum(l_extendedprice),2) count old_sum+10*count
+10756168.66 471 10756168.66
+update lineitem set l_extendedprice=l_extendedprice-10 where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+select ROUND(sum(l_extendedprice),2), 471 as count,
+10751458.66 as old_sum from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+ROUND(sum(l_extendedprice),2) count old_sum
+10751458.66 471 10751458.66
+# DuplicateWeedout PS
+# ===================
+prepare stmt from "
+update lineitem set l_extendedprice=l_extendedprice+? where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+";
+select 471 as count, 10751458.66 as old_sum;
+count old_sum
+471 10751458.66
+set @a1=20;
+execute stmt using @a1;
+select ROUND(sum(l_extendedprice),2), 471 as count,
+(10751458.66+20*471) as 'old_sum+20*count'
+ from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+ROUND(sum(l_extendedprice),2) count old_sum+20*count
+10760878.66 471 10760878.66
+set @a2=10;
+execute stmt using @a2;
+select ROUND(sum(l_extendedprice),2), 471 as count,
+(10751458.66+30*471) as 'old_sum+30*count'
+ from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+ROUND(sum(l_extendedprice),2) count old_sum+30*count
+10765588.66 471 10765588.66
+execute stmt using -(@a1+@a2);
+select ROUND(sum(l_extendedprice),2), 471 as count,
+10751458.66 as old_sum from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+ROUND(sum(l_extendedprice),2) count old_sum
+10751458.66 471 10751458.66
+deallocate prepare stmt;
+# DuplicateWeedout SP
+# ===================
+create procedure p(d int)
+update lineitem set l_extendedprice=l_extendedprice+d where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+select 471 as count, 10751458.66 as old_sum;
+count old_sum
+471 10751458.66
+call p(10);
+select ROUND(sum(l_extendedprice),2), 471 as count,
+(10751458.66+10*471) as 'old_sum+10*count'
+ from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+ROUND(sum(l_extendedprice),2) count old_sum+10*count
+10756168.66 471 10756168.66
+call p(20);
+select ROUND(sum(l_extendedprice),2), 471 as count,
+(10751458.66+30*471) as 'old_sum+30*count'
+ from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+ROUND(sum(l_extendedprice),2) count old_sum+30*count
+10765588.66 471 10765588.66
+call p(-(10+20));
+select ROUND(sum(l_extendedprice),2), 471 as count,
+10751458.66 as old_sum from lineitem where l_partkey in (
+select ps_partkey
+from partsupp_small join lineitem on ps_partkey=l_partkey
+where ps_suppkey in (
+select s_suppkey from supplier where s_suppkey < 2
+)
+);
+ROUND(sum(l_extendedprice),2) count old_sum
+10751458.66 471 10751458.66
+drop procedure p;
+set @@optimizer_switch=@tmp_optimizer_switch;
+drop table partsupp_small;
DROP DATABASE dbt3_s001;
diff --git a/mysql-test/main/update_single_to_multi.test b/mysql-test/main/update_single_to_multi.test
index a215c5acc67..7364806e65d 100644
--- a/mysql-test/main/update_single_to_multi.test
+++ b/mysql-test/main/update_single_to_multi.test
@@ -587,4 +587,246 @@ update orders set o_totalprice = o_totalprice+50 where $c11;
eval
select o_orderkey, o_totalprice from orders where $c11;
+CREATE TABLE partsupp_small (
+ ps_partkey int(11) NOT NULL DEFAULT '0',
+ ps_suppkey int(11) NOT NULL DEFAULT '0',
+ ps_availqty int(11) DEFAULT NULL,
+ ps_supplycost double DEFAULT NULL,
+ ps_comment varchar(199) DEFAULT NULL,
+ PRIMARY KEY (ps_partkey,ps_suppkey),
+ KEY i_ps_partkey (ps_partkey),
+ KEY i_ps_suppkey (ps_suppkey)
+);
+
+create index i_ps_sup_part on partsupp_small(ps_suppkey, ps_partkey);
+insert into partsupp_small select * from partsupp where ps_partkey <50;
+analyze table partsupp_small persistent for all;
+
+--echo # LooseScan
+--echo # =========
+
+let $c12 = l_suppkey in
+ (select ps_suppkey from partsupp_small
+ where ps_partkey in (1,2,3));
+
+eval
+explain
+select count(*) from lineitem where $c12;
+eval
+explain format=json
+select count(*) from lineitem where $c12;
+eval
+select count(*) from lineitem where $c12;
+let $l_count =
+ query_get_value('select count(*) as a from lineitem where $c12;', a, 1);
+let $l_old_sum =
+ query_get_value('select ROUND(sum(l_extendedprice),2) as a
+ from lineitem where $c12;', a, 1
+ );
+eval select $l_count as count, $l_old_sum as old_sum;
+
+eval
+explain
+update lineitem set l_extendedprice=l_extendedprice+10 where $c12;
+eval
+explain format=json
+update lineitem set l_extendedprice=l_extendedprice+10 where $c12;
+eval
+update lineitem set l_extendedprice=l_extendedprice+10 where $c12;
+eval
+select ROUND(sum(l_extendedprice),2), $l_count as count,
+ ($l_old_sum+10*$l_count) as 'old_sum+10*count'
+ from lineitem where $c12;
+
+eval
+update lineitem set l_extendedprice=l_extendedprice-10 where $c12;
+eval
+select ROUND(sum(l_extendedprice),2), $l_count as count,
+ $l_old_sum as old_sum from lineitem where $c12;
+
+
+--echo # LooseScan PS
+--echo # ============
+
+eval
+prepare stmt from "
+update lineitem set l_extendedprice=l_extendedprice+? where $c12;
+";
+
+let $l_count = query_get_value('select count(*) as a
+ from lineitem where $c12;', a, 1 );
+let $l_old_sum = query_get_value('select ROUND(sum(l_extendedprice),2) as a
+ from lineitem where $c12;', a, 1 );
+eval select $l_count as count, $l_old_sum as old_sum;
+eval
+set @a1=20;
+execute stmt using @a1;
+eval
+select ROUND(sum(l_extendedprice),2), $l_count as count,
+ ($l_old_sum+20*$l_count) as 'old_sum+20*count'
+ from lineitem where $c12;
+set @a2=10;
+execute stmt using @a2;
+eval
+select ROUND(sum(l_extendedprice),2), $l_count as count,
+ ($l_old_sum+30*$l_count) as 'old_sum+30*count'
+ from lineitem where $c12;
+execute stmt using -(@a1+@a2);
+eval
+select ROUND(sum(l_extendedprice),2), $l_count as count,
+ $l_old_sum as old_sum from lineitem where $c12;
+
+deallocate prepare stmt;
+
+--echo # LooseScan SP
+--echo # ============
+
+eval
+create procedure p(d int)
+update lineitem set l_extendedprice=l_extendedprice+d where $c12;
+
+let $l_count = query_get_value('select count(*) as a
+ from lineitem where $c12;', a, 1 );
+let $l_old_sum = query_get_value('select ROUND(sum(l_extendedprice),2) as a
+ from lineitem where $c12;', a, 1 );
+eval select $l_count as count, $l_old_sum as old_sum;
+eval
+call p(10);
+eval
+select ROUND(sum(l_extendedprice),2), $l_count as count,
+ ($l_old_sum+10*$l_count) as 'old_sum+10*count'
+ from lineitem where $c12;
+call p(20);
+eval
+select ROUND(sum(l_extendedprice),2), $l_count as count,
+ ($l_old_sum+30*$l_count) as 'old_sum+30*count'
+ from lineitem where $c12;
+call p(-(10+20));
+eval
+select ROUND(sum(l_extendedprice),2), $l_count as count,
+ $l_old_sum as old_sum from lineitem where $c12;
+
+drop procedure p;
+
+--echo # DuplicateWeedout
+--echo # ================
+
+set @tmp_optimizer_switch= @@optimizer_switch;
+set optimizer_switch='materialization=off';
+
+analyze table lineitem;
+analyze table orders;
+
+let $c13 = l_partkey in (
+ select ps_partkey
+ from partsupp_small join lineitem on ps_partkey=l_partkey
+ where ps_suppkey in (
+ select s_suppkey from supplier where s_suppkey < 2
+ )
+);
+
+eval
+explain
+select count(*) from lineitem where $c13;
+eval
+explain format=json
+select count(*) from lineitem where $c13;
+eval
+select count(*) from lineitem where $c13;
+
+let $l_count = query_get_value('select count(*) as a
+ from lineitem where $c13;', a, 1 );
+let $l_old_sum = query_get_value('select ROUND(sum(l_extendedprice),2) as a
+ from lineitem where $c13;', a, 1 );
+eval select $l_count as count, $l_old_sum as old_sum;
+
+eval
+explain
+update lineitem set l_extendedprice=l_extendedprice+10 where $c13;
+eval
+explain format=json
+update lineitem set l_extendedprice=l_extendedprice+10 where $c13;
+eval
+update lineitem set l_extendedprice=l_extendedprice+10 where $c13;
+eval
+select ROUND(sum(l_extendedprice),2), $l_count as count,
+ ($l_old_sum+10*$l_count) as 'old_sum+10*count'
+ from lineitem where $c13;
+
+eval
+update lineitem set l_extendedprice=l_extendedprice-10 where $c13;
+eval
+select ROUND(sum(l_extendedprice),2), $l_count as count,
+ $l_old_sum as old_sum from lineitem where $c13;
+
+
+--echo # DuplicateWeedout PS
+--echo # ===================
+
+eval
+prepare stmt from "
+update lineitem set l_extendedprice=l_extendedprice+? where $c13;
+";
+
+let $l_count =
+ query_get_value('select count(*) as a
+ from lineitem where $c13;', a, 1 );
+let $l_old_sum =
+ query_get_value('select ROUND(sum(l_extendedprice),2) as a
+ from lineitem where $c13;', a, 1);
+eval select $l_count as count, $l_old_sum as old_sum;
+eval
+set @a1=20;
+execute stmt using @a1;
+eval
+select ROUND(sum(l_extendedprice),2), $l_count as count,
+ ($l_old_sum+20*$l_count) as 'old_sum+20*count'
+ from lineitem where $c13;
+set @a2=10;
+execute stmt using @a2;
+eval
+select ROUND(sum(l_extendedprice),2), $l_count as count,
+ ($l_old_sum+30*$l_count) as 'old_sum+30*count'
+ from lineitem where $c13;
+execute stmt using -(@a1+@a2);
+eval
+select ROUND(sum(l_extendedprice),2), $l_count as count,
+ $l_old_sum as old_sum from lineitem where $c13;
+
+deallocate prepare stmt;
+
+--echo # DuplicateWeedout SP
+--echo # ===================
+
+eval
+create procedure p(d int)
+update lineitem set l_extendedprice=l_extendedprice+d where $c13;
+
+let $l_count = query_get_value('select count(*) as a
+ from lineitem where $c13;', a, 1 );
+let $l_old_sum = query_get_value('select ROUND(sum(l_extendedprice),2) as a
+ from lineitem where $c13;', a, 1 );
+eval select $l_count as count, $l_old_sum as old_sum;
+eval
+call p(10);
+
+eval
+select ROUND(sum(l_extendedprice),2), $l_count as count,
+ ($l_old_sum+10*$l_count) as 'old_sum+10*count'
+ from lineitem where $c13;
+call p(20);
+eval
+select ROUND(sum(l_extendedprice),2), $l_count as count,
+ ($l_old_sum+30*$l_count) as 'old_sum+30*count'
+ from lineitem where $c13;
+call p(-(10+20));
+eval
+select ROUND(sum(l_extendedprice),2), $l_count as count,
+ $l_old_sum as old_sum from lineitem where $c13;
+
+drop procedure p;
+set @@optimizer_switch=@tmp_optimizer_switch;
+
+drop table partsupp_small;
+
DROP DATABASE dbt3_s001;
diff --git a/mysql-test/main/update_use_source.result b/mysql-test/main/update_use_source.result
index 99d72420ded..d756775226c 100644
--- a/mysql-test/main/update_use_source.result
+++ b/mysql-test/main/update_use_source.result
@@ -1,4 +1,16 @@
-create table t1 (old_c1 integer, old_c2 integer,c1 integer, c2 integer, c3 integer) engine=InnoDB STATS_PERSISTENT=0;
+set @save_default_engine=@@default_storage_engine;
+#######################################
+# #
+# Engine InnoDB #
+# #
+#######################################
+set global innodb_stats_persistent=1;
+set default_storage_engine=InnoDB;
+create table t1 (old_c1 integer,
+old_c2 integer,
+c1 integer,
+c2 integer,
+c3 integer);
create view v1 as select * from t1 where c2=2;
create trigger trg_t1 before update on t1 for each row
begin
@@ -6,37 +18,39 @@ set new.old_c1=old.c1;
set new.old_c2=old.c2;
end;
/
-insert into t1(c1,c2,c3) values (1,1,1);
-insert into t1(c1,c2,c3) values (1,2,2);
-insert into t1(c1,c2,c3) values (1,3,3);
-insert into t1(c1,c2,c3) values (2,1,4);
-insert into t1(c1,c2,c3) values (2,2,5);
-insert into t1(c1,c2,c3) values (2,3,6);
-insert into t1(c1,c2,c3) values (2,4,7);
-insert into t1(c1,c2,c3) values (2,5,8);
-commit;
-select * from t1;
-old_c1 old_c2 c1 c2 c3
-NULL NULL 1 1 1
-NULL NULL 1 2 2
-NULL NULL 1 3 3
-NULL NULL 2 1 4
-NULL NULL 2 2 5
-NULL NULL 2 3 6
-NULL NULL 2 4 7
-NULL NULL 2 5 8
-Test without any index
-#
-# Update a with value from subquery on the same table, no search clause. ALL access
-#
-start transaction;
-update t1
-set c1=(select a.c3
-from t1 a
-where a.c3 = t1.c3);
-affected rows: 8
-info: Rows matched: 8 Changed: 8 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ;
+insert into t1(c1,c2,c3)
+values (1,1,1), (1,2,2), (1,3,3),
+(2,1,4), (2,2,5), (2,3,6),
+(2,4,7), (2,5,8);
+insert into t1 select NULL, NULL, c1+10,c2,c3+10 from t1;
+insert into t1 select NULL, NULL, c1+20,c2+1,c3+20 from t1;
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from t1;
+#######################################
+# Test without any index #
+#######################################
+#
+# Update with value from subquery on the same table
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
1->1 1
1->2 2 *
@@ -46,20 +60,56 @@ concat(old_c1,'->',c1) c3 Changed
2->6 6 *
2->7 7 *
2->8 8 *
-rollback;
+11->11 11
+11->12 12 *
+11->13 13 *
+12->14 14 *
+12->15 15 *
+12->16 16 *
+12->17 17 *
+12->18 18 *
+21->21 21
+21->22 22 *
+21->23 23 *
+22->24 24 *
+22->25 25 *
+22->26 26 *
+22->27 27 *
+22->28 28 *
+31->31 31
+31->32 32 *
+31->33 33 *
+32->34 34 *
+32->35 35 *
+32->36 36 *
+32->37 37 *
+32->38 38 *
+truncate table t1;
+insert into t1 select * from tmp;
#
-# Update with search clause on the same table
+# Update with EXISTS subquery over the updated table
+# in WHERE + possibly sargable condition
#
-start transaction;
-update t1
-set c1=10
-where c1 <2
-and exists (select 'X'
- from t1 a
-where a.c1 = t1.c1);
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update t1 set c1=10 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+update t1 set c1=10 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
affected rows: 3
info: Rows matched: 3 Changed: 3 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ;
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
1->10 1 *
1->10 2 *
@@ -69,19 +119,55 @@ NULL 5
NULL 6
NULL 7
NULL 8
-rollback;
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
#
-# Update via RANGE or INDEX access if an index or a primary key exists
+# Update with EXISTS subquery over the updated table
+# in WHERE + non-sargable condition
#
-explain update t1 set c1=0 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 > 3;
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
+explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 8 Using where
-1 PRIMARY a ALL NULL NULL NULL NULL 8 Using where; FirstMatch(t1)
-start transaction;
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
-affected rows: 4
-info: Rows matched: 4 Changed: 4 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+affected rows: 20
+info: Rows matched: 20 Changed: 20 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
NULL 1
NULL 2
@@ -91,13 +177,57 @@ NULL 5
2->12 6 *
2->12 7 *
2->12 8 *
-rollback;
+NULL 11
+NULL 12
+11->21 13 *
+NULL 14
+NULL 15
+12->22 16 *
+12->22 17 *
+12->22 18 *
+NULL 21
+21->31 22 *
+21->31 23 *
+NULL 24
+22->32 25 *
+22->32 26 *
+22->32 27 *
+22->32 28 *
+NULL 31
+31->41 32 *
+31->41 33 *
+NULL 34
+32->42 35 *
+32->42 36 *
+32->42 37 *
+32->42 38 *
+truncate table t1;
+insert into t1 select * from tmp;
#
# Update with order by
#
-start transaction;
-update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3 order by c2;
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
+explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
+update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+affected rows: 20
+info: Rows matched: 20 Changed: 20 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
NULL 1
NULL 2
@@ -107,18 +237,54 @@ NULL 5
2->12 6 *
2->12 7 *
2->12 8 *
-rollback;
+NULL 11
+NULL 12
+11->21 13 *
+NULL 14
+NULL 15
+12->22 16 *
+12->22 17 *
+12->22 18 *
+NULL 21
+21->31 22 *
+21->31 23 *
+NULL 24
+22->32 25 *
+22->32 26 *
+22->32 27 *
+22->32 28 *
+NULL 31
+31->41 32 *
+31->41 33 *
+NULL 34
+32->42 35 *
+32->42 36 *
+32->42 37 *
+32->42 38 *
+truncate table t1;
+insert into t1 select * from tmp;
#
-Update using a view in subquery
+# Update with a reference to view in subquery
+# in settable value
#
-start transaction;
-update t1
-set c1=c1 +(select max(a.c2)
-from v1 a
-where a.c1 = t1.c1) ;
-affected rows: 8
-info: Rows matched: 8 Changed: 8 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1 set c1=c1 +(select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+update t1 set c1=c1 +(select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
1->3 1 *
1->3 2 *
@@ -128,19 +294,53 @@ concat(old_c1,'->',c1) c3 Changed
2->4 6 *
2->4 7 *
2->4 8 *
-rollback;
+11->13 11 *
+11->13 12 *
+11->13 13 *
+12->14 14 *
+12->14 15 *
+12->14 16 *
+12->14 17 *
+12->14 18 *
+21->23 21 *
+21->23 22 *
+21->23 23 *
+22->24 24 *
+22->24 25 *
+22->24 26 *
+22->24 27 *
+22->24 28 *
+31->33 31 *
+31->33 32 *
+31->33 33 *
+32->34 34 *
+32->34 35 *
+32->34 36 *
+32->34 37 *
+32->34 38 *
+truncate table t1;
+insert into t1 select * from tmp;
#
-# Update throw a view
+# Update view
#
-start transaction;
-update v1
-set c1=c1 + (select max(a.c2)
-from t1 a
-where a.c1 = v1.c1) +10
-where c3 > 3;
-affected rows: 1
-info: Rows matched: 1 Changed: 1 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from v1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using where
+explain update v1 set c1=c1 + (select max(a.c2) from t1 a
+where a.c1 = v1.c1) +10 where c3 > 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+update v1 set c1=c1 + (select max(a.c2) from t1 a
+where a.c1 = v1.c1) +10 where c3 > 3;
+affected rows: 7
+info: Rows matched: 7 Changed: 7 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
NULL 1
NULL 2
@@ -150,20 +350,55 @@ NULL 4
NULL 6
NULL 7
NULL 8
-rollback;
+NULL 11
+11->24 12 *
+NULL 13
+NULL 14
+12->27 15 *
+NULL 16
+NULL 17
+NULL 18
+21->35 21 *
+NULL 22
+NULL 23
+22->38 24 *
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+31->45 31 *
+NULL 32
+NULL 33
+32->48 34 *
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
#
-# Update through a view and using the view in subquery
+# Update view with reference to the same view in subquery
#
-start transaction;
-update v1
-set c1=c1 + 1
-where c1 <2
-and exists (select 'X'
- from v1 a
-where a.c1 = v1.c1);
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from v1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update v1 set c1=c1 + 1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+update v1 set c1=c1 + 1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
affected rows: 1
info: Rows matched: 1 Changed: 1 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
NULL 1
1->2 2 *
@@ -173,22 +408,57 @@ NULL 5
NULL 6
NULL 7
NULL 8
-rollback;
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
#
-# Update through a view and using the view in subquery
+# Update view with EXISTS and reference to the same view in subquery
#
-start transaction;
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from v1 where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update v1
+set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1)
+where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
update v1
-set c1=(select max(a.c1)+10
-from v1 a
-where a.c1 = v1.c1)
-where c1 <10
-and exists (select 'X'
- from v1 a
-where a.c2 = v1.c2);
+set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1)
+where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
affected rows: 2
info: Rows matched: 2 Changed: 2 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
NULL 1
1->11 2 *
@@ -198,41 +468,107 @@ NULL 4
NULL 6
NULL 7
NULL 8
-rollback;
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
#
-# Update of the index or primary key (c3)
+# Update with IN predicand over the updated table in WHERE
#
-start transaction;
-explain update t1 set c3=c3+10 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 8
-1 PRIMARY a ALL NULL NULL NULL NULL 8 Using where; FirstMatch(t1)
-update t1 set c3=c3+10 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
-affected rows: 8
-info: Rows matched: 8 Changed: 8 Warnings: 0
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
select c3 from t1;
c3
-11
-12
-13
-14
-15
-16
-17
-18
-rollback;
-#
-# update with a limit
-#
-start transaction;
+111
+112
+113
+114
+115
+116
+117
+118
+121
+122
+123
+124
+125
+126
+127
+128
+131
+132
+133
+134
+135
+136
+137
+138
+141
+142
+143
+144
+145
+146
+147
+148
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with a limit
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
update t1
-set c1=(select a.c3
-from t1 a
-where a.c3 = t1.c3)
-limit 2;
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2;
affected rows: 2
info: Rows matched: 2 Changed: 2 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ;
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
1->1 1
1->2 2 *
@@ -242,19 +578,55 @@ NULL 5
NULL 6
NULL 7
NULL 8
-rollback;
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
#
-# update with a limit and an order by
+# Update with a limit and an order by
#
-start transaction;
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 order by c3 desc limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using filesort
+explain update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using filesort
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
update t1
-set c1=(select a.c3
-from t1 a
-where a.c3 = t1.c3)
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3)
order by c3 desc limit 2;
affected rows: 2
info: Rows matched: 2 Changed: 2 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ;
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
NULL 1
NULL 2
@@ -262,22 +634,61 @@ NULL 3
NULL 4
NULL 5
NULL 6
-2->7 7 *
-2->8 8 *
-rollback;
-Test with an index on updated columns
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+32->37 37 *
+32->38 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#######################################
+# Test with an index #
+#######################################
create index t1_c2 on t1 (c2,c1);
+analyze table t1;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
#
-# Update a with value from subquery on the same table, no search clause. ALL access
+# Update with value from subquery on the same table
#
-start transaction;
-update t1
-set c1=(select a.c3
-from t1 a
-where a.c3 = t1.c3);
-affected rows: 8
-info: Rows matched: 8 Changed: 8 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ;
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
1->1 1
1->2 2 *
@@ -287,20 +698,56 @@ concat(old_c1,'->',c1) c3 Changed
2->6 6 *
2->7 7 *
2->8 8 *
-rollback;
+11->11 11
+11->12 12 *
+11->13 13 *
+12->14 14 *
+12->15 15 *
+12->16 16 *
+12->17 17 *
+12->18 18 *
+21->21 21
+21->22 22 *
+21->23 23 *
+22->24 24 *
+22->25 25 *
+22->26 26 *
+22->27 27 *
+22->28 28 *
+31->31 31
+31->32 32 *
+31->33 33 *
+32->34 34 *
+32->35 35 *
+32->36 36 *
+32->37 37 *
+32->38 38 *
+truncate table t1;
+insert into t1 select * from tmp;
#
-# Update with search clause on the same table
+# Update with EXISTS subquery over the updated table
+# in WHERE + possibly sargable condition
#
-start transaction;
-update t1
-set c1=10
-where c1 <2
-and exists (select 'X'
- from t1 a
-where a.c1 = t1.c1);
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a index NULL t1_c2 10 NULL 32 Using where; Using index; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update t1 set c1=10 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a index NULL t1_c2 10 NULL 32 Using where; Using index; FirstMatch(t1)
+update t1 set c1=10 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
affected rows: 3
info: Rows matched: 3 Changed: 3 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ;
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
1->10 1 *
1->10 2 *
@@ -310,19 +757,53 @@ NULL 5
NULL 6
NULL 7
NULL 8
-rollback;
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
#
-# Update via RANGE or INDEX access if an index or a primary key exists
+# Update with EXISTS subquery over the updated table
+# in WHERE + non-sargable condition
#
-explain update t1 set c1=0 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 > 3;
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 range t1_c2 t1_c2 5 NULL 2 Using index condition
-1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c2 8 Using index; FirstMatch(t1)
-start transaction;
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c2 5 Using index; FirstMatch(t1)
+explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c2 5 Using index; FirstMatch(t1)
update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
-affected rows: 4
-info: Rows matched: 4 Changed: 4 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+affected rows: 20
+info: Rows matched: 20 Changed: 20 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
NULL 1
NULL 2
@@ -332,13 +813,55 @@ NULL 5
2->12 6 *
2->12 7 *
2->12 8 *
-rollback;
+NULL 11
+NULL 12
+11->21 13 *
+NULL 14
+NULL 15
+12->22 16 *
+12->22 17 *
+12->22 18 *
+NULL 21
+21->31 22 *
+21->31 23 *
+NULL 24
+22->32 25 *
+22->32 26 *
+22->32 27 *
+22->32 28 *
+NULL 31
+31->41 32 *
+31->41 33 *
+NULL 34
+32->42 35 *
+32->42 36 *
+32->42 37 *
+32->42 38 *
+truncate table t1;
+insert into t1 select * from tmp;
#
# Update with order by
#
-start transaction;
-update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3 order by c2;
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where; Using filesort
+1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c2 5 Using index; FirstMatch(t1)
+explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where; Using filesort
+1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c2 5 Using index; FirstMatch(t1)
+update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+affected rows: 20
+info: Rows matched: 20 Changed: 20 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
NULL 1
NULL 2
@@ -348,18 +871,54 @@ NULL 5
2->12 6 *
2->12 7 *
2->12 8 *
-rollback;
+NULL 11
+NULL 12
+11->21 13 *
+NULL 14
+NULL 15
+12->22 16 *
+12->22 17 *
+12->22 18 *
+NULL 21
+21->31 22 *
+21->31 23 *
+NULL 24
+22->32 25 *
+22->32 26 *
+22->32 27 *
+22->32 28 *
+NULL 31
+31->41 32 *
+31->41 33 *
+NULL 34
+32->42 35 *
+32->42 36 *
+32->42 37 *
+32->42 38 *
+truncate table t1;
+insert into t1 select * from tmp;
#
-Update using a view in subquery
+# Update with a reference to view in subquery
+# in settable value
#
-start transaction;
-update t1
-set c1=c1 +(select max(a.c2)
-from v1 a
-where a.c1 = t1.c1) ;
-affected rows: 8
-info: Rows matched: 8 Changed: 8 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1 set c1=c1 +(select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 Using index
+update t1 set c1=c1 +(select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
1->3 1 *
1->3 2 *
@@ -369,19 +928,53 @@ concat(old_c1,'->',c1) c3 Changed
2->4 6 *
2->4 7 *
2->4 8 *
-rollback;
+11->13 11 *
+11->13 12 *
+11->13 13 *
+12->14 14 *
+12->14 15 *
+12->14 16 *
+12->14 17 *
+12->14 18 *
+21->23 21 *
+21->23 22 *
+21->23 23 *
+22->24 24 *
+22->24 25 *
+22->24 26 *
+22->24 27 *
+22->24 28 *
+31->33 31 *
+31->33 32 *
+31->33 33 *
+32->34 34 *
+32->34 35 *
+32->34 36 *
+32->34 37 *
+32->34 38 *
+truncate table t1;
+insert into t1 select * from tmp;
#
-# Update throw a view
+# Update view
#
-start transaction;
-update v1
-set c1=c1 + (select max(a.c2)
-from t1 a
-where a.c1 = v1.c1) +10
-where c3 > 3;
-affected rows: 1
-info: Rows matched: 1 Changed: 1 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from v1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ref t1_c2 t1_c2 5 const 8
+explain update v1 set c1=c1 + (select max(a.c2) from t1 a
+where a.c1 = v1.c1) +10 where c3 > 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ref t1_c2 t1_c2 5 const 8 Using where
+2 DEPENDENT SUBQUERY a index NULL t1_c2 10 NULL 32 Using where; Using index
+update v1 set c1=c1 + (select max(a.c2) from t1 a
+where a.c1 = v1.c1) +10 where c3 > 3;
+affected rows: 7
+info: Rows matched: 7 Changed: 7 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
NULL 1
NULL 2
@@ -391,20 +984,55 @@ NULL 4
NULL 6
NULL 7
NULL 8
-rollback;
+NULL 11
+11->24 12 *
+NULL 13
+NULL 14
+12->27 15 *
+NULL 16
+NULL 17
+NULL 18
+21->35 21 *
+NULL 22
+NULL 23
+22->38 24 *
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+31->45 31 *
+NULL 32
+NULL 33
+32->48 34 *
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
#
-# Update through a view and using the view in subquery
+# Update view with reference to the same view in subquery
#
-start transaction;
-update v1
-set c1=c1 + 1
-where c1 <2
-and exists (select 'X'
- from v1 a
-where a.c1 = v1.c1);
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from v1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 range t1_c2 t1_c2 10 NULL 1 Using index condition
+1 PRIMARY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 Using index; FirstMatch(t1)
+explain update v1 set c1=c1 + 1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 range t1_c2 t1_c2 10 NULL 1 Using index condition; Using where
+2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,func 1 Using where; Using index
+update v1 set c1=c1 + 1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
affected rows: 1
info: Rows matched: 1 Changed: 1 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
NULL 1
1->2 2 *
@@ -414,22 +1042,57 @@ NULL 5
NULL 6
NULL 7
NULL 8
-rollback;
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
#
-# Update through a view and using the view in subquery
+# Update view with EXISTS and reference to the same view in subquery
#
-start transaction;
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from v1 where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 range t1_c2 t1_c2 10 NULL 2 Using index condition
+1 PRIMARY t1 ref t1_c2 t1_c2 5 const 8 Using index; FirstMatch(t1)
+explain update v1
+set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1)
+where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 range t1_c2 t1_c2 10 NULL 2 Using index condition
+3 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 5 const 8 Using where; Using index
+2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 Using index
update v1
-set c1=(select max(a.c1)+10
-from v1 a
-where a.c1 = v1.c1)
-where c1 <10
-and exists (select 'X'
- from v1 a
-where a.c2 = v1.c2);
+set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1)
+where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
affected rows: 2
info: Rows matched: 2 Changed: 2 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
NULL 1
1->11 2 *
@@ -439,41 +1102,107 @@ NULL 4
NULL 6
NULL 7
NULL 8
-rollback;
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
#
-# Update of the index or primary key (c3)
+# Update with IN predicand over the updated table in WHERE
#
-start transaction;
-explain update t1 set c3=c3+10 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+1 PRIMARY a ref t1_c2 t1_c2 10 test.t1.c2,test.t1.c1 1 Using index; FirstMatch(t1)
+explain update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 8 Using where
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
1 PRIMARY a ref t1_c2 t1_c2 10 test.t1.c2,test.t1.c1 1 Using index; FirstMatch(t1)
-update t1 set c3=c3+10 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
-affected rows: 8
-info: Rows matched: 8 Changed: 8 Warnings: 0
+update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
select c3 from t1;
c3
-11
-12
-13
-14
-15
-16
-17
-18
-rollback;
-#
-# update with a limit
-#
-start transaction;
+111
+112
+113
+114
+115
+116
+117
+118
+121
+122
+123
+124
+125
+126
+127
+128
+131
+132
+133
+134
+135
+136
+137
+138
+141
+142
+143
+144
+145
+146
+147
+148
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with a limit
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
update t1
-set c1=(select a.c3
-from t1 a
-where a.c3 = t1.c3)
-limit 2;
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2;
affected rows: 2
info: Rows matched: 2 Changed: 2 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ;
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
1->1 1
1->2 2 *
@@ -483,19 +1212,55 @@ NULL 5
NULL 6
NULL 7
NULL 8
-rollback;
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
#
-# update with a limit and an order by
+# Update with a limit and an order by
#
-start transaction;
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 order by c3 desc limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using filesort
+explain update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using filesort
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
update t1
-set c1=(select a.c3
-from t1 a
-where a.c3 = t1.c3)
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3)
order by c3 desc limit 2;
affected rows: 2
info: Rows matched: 2 Changed: 2 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ;
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
NULL 1
NULL 2
@@ -503,22 +1268,1336 @@ NULL 3
NULL 4
NULL 5
NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+32->37 37 *
+32->38 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#######################################
+# Test with a primary key #
+#######################################
+drop index t1_c2 on t1;
+alter table t1 add primary key (c3);
+analyze table t1;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+#
+# Update with value from subquery on the same table
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1
+update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+1->1 1
+1->2 2 *
+1->3 3 *
+2->4 4 *
+2->5 5 *
+2->6 6 *
2->7 7 *
2->8 8 *
-rollback;
-Test with an index on updated columns
-create index t1_c3 on t1 (c3);
+11->11 11
+11->12 12 *
+11->13 13 *
+12->14 14 *
+12->15 15 *
+12->16 16 *
+12->17 17 *
+12->18 18 *
+21->21 21
+21->22 22 *
+21->23 23 *
+22->24 24 *
+22->25 25 *
+22->26 26 *
+22->27 27 *
+22->28 28 *
+31->31 31
+31->32 32 *
+31->33 33 *
+32->34 34 *
+32->35 35 *
+32->36 36 *
+32->37 37 *
+32->38 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with EXISTS subquery over the updated table
+# in WHERE + possibly sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update t1 set c1=10 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+update t1 set c1=10 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
+affected rows: 3
+info: Rows matched: 3 Changed: 3 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+1->10 1 *
+1->10 2 *
+1->10 3 *
+NULL 4
+NULL 5
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with EXISTS subquery over the updated table
+# in WHERE + non-sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
+explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
+update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+affected rows: 20
+info: Rows matched: 20 Changed: 20 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+NULL 2
+1->11 3 *
+NULL 4
+NULL 5
+2->12 6 *
+2->12 7 *
+2->12 8 *
+NULL 11
+NULL 12
+11->21 13 *
+NULL 14
+NULL 15
+12->22 16 *
+12->22 17 *
+12->22 18 *
+NULL 21
+21->31 22 *
+21->31 23 *
+NULL 24
+22->32 25 *
+22->32 26 *
+22->32 27 *
+22->32 28 *
+NULL 31
+31->41 32 *
+31->41 33 *
+NULL 34
+32->42 35 *
+32->42 36 *
+32->42 37 *
+32->42 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with order by
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
+explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
+update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+affected rows: 20
+info: Rows matched: 20 Changed: 20 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+NULL 2
+1->11 3 *
+NULL 4
+NULL 5
+2->12 6 *
+2->12 7 *
+2->12 8 *
+NULL 11
+NULL 12
+11->21 13 *
+NULL 14
+NULL 15
+12->22 16 *
+12->22 17 *
+12->22 18 *
+NULL 21
+21->31 22 *
+21->31 23 *
+NULL 24
+22->32 25 *
+22->32 26 *
+22->32 27 *
+22->32 28 *
+NULL 31
+31->41 32 *
+31->41 33 *
+NULL 34
+32->42 35 *
+32->42 36 *
+32->42 37 *
+32->42 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with a reference to view in subquery
+# in settable value
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1 set c1=c1 +(select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+update t1 set c1=c1 +(select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+1->3 1 *
+1->3 2 *
+1->3 3 *
+2->4 4 *
+2->4 5 *
+2->4 6 *
+2->4 7 *
+2->4 8 *
+11->13 11 *
+11->13 12 *
+11->13 13 *
+12->14 14 *
+12->14 15 *
+12->14 16 *
+12->14 17 *
+12->14 18 *
+21->23 21 *
+21->23 22 *
+21->23 23 *
+22->24 24 *
+22->24 25 *
+22->24 26 *
+22->24 27 *
+22->24 28 *
+31->33 31 *
+31->33 32 *
+31->33 33 *
+32->34 34 *
+32->34 35 *
+32->34 36 *
+32->34 37 *
+32->34 38 *
+truncate table t1;
+insert into t1 select * from tmp;
#
-# Update a with value from subquery on the same table, no search clause. ALL access
+# Update view
#
-start transaction;
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from v1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using where
+explain update v1 set c1=c1 + (select max(a.c2) from t1 a
+where a.c1 = v1.c1) +10 where c3 > 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 range PRIMARY PRIMARY 4 NULL 29 Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+update v1 set c1=c1 + (select max(a.c2) from t1 a
+where a.c1 = v1.c1) +10 where c3 > 3;
+affected rows: 7
+info: Rows matched: 7 Changed: 7 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+NULL 2
+NULL 3
+NULL 4
+2->17 5 *
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+11->24 12 *
+NULL 13
+NULL 14
+12->27 15 *
+NULL 16
+NULL 17
+NULL 18
+21->35 21 *
+NULL 22
+NULL 23
+22->38 24 *
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+31->45 31 *
+NULL 32
+NULL 33
+32->48 34 *
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update view with reference to the same view in subquery
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from v1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update v1 set c1=c1 + 1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+update v1 set c1=c1 + 1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+affected rows: 1
+info: Rows matched: 1 Changed: 1 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+1->2 2 *
+NULL 3
+NULL 4
+NULL 5
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update view with EXISTS and reference to the same view in subquery
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from v1 where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update v1
+set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1)
+where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+update v1
+set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1)
+where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
+affected rows: 2
+info: Rows matched: 2 Changed: 2 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+1->11 2 *
+NULL 3
+NULL 4
+2->12 5 *
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with IN predicand over the updated table in WHERE
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
+select c3 from t1;
+c3
+111
+112
+113
+114
+115
+116
+117
+118
+121
+122
+123
+124
+125
+126
+127
+128
+131
+132
+133
+134
+135
+136
+137
+138
+141
+142
+143
+144
+145
+146
+147
+148
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with a limit
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1
+update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2;
+affected rows: 2
+info: Rows matched: 2 Changed: 2 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+1->1 1
+1->2 2 *
+NULL 3
+NULL 4
+NULL 5
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with a limit and an order by
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 order by c3 desc limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 index NULL PRIMARY 4 NULL 2
+explain update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 index NULL PRIMARY 4 NULL 2 Using buffer
+2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1
update t1
-set c1=(select a.c3
-from t1 a
-where a.c3 = t1.c3);
-affected rows: 8
-info: Rows matched: 8 Changed: 8 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ;
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 2;
+affected rows: 2
+info: Rows matched: 2 Changed: 2 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+NULL 2
+NULL 3
+NULL 4
+NULL 5
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+32->37 37 *
+32->38 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+# Update with error "Subquery returns more than 1 row"
+update t1 set c2=(select c2 from t1);
+ERROR 21000: Subquery returns more than 1 row
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+# Update with error "Subquery returns more than 1 row"
+# and order by
+update t1 set c2=(select c2 from t1) order by c3;
+ERROR 21000: Subquery returns more than 1 row
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+# Duplicate value on update a primary key
+update t1 set c3=0
+where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+ERROR 23000: Duplicate entry '0' for key 'PRIMARY'
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+# Duplicate value on update a primary key with ignore
+update ignore t1 set c3=0
+where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+affected rows: 20
+info: Rows matched: 20 Changed: 20 Warnings: 0
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 0
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+# Duplicate value on update a primary key and limit
+update t1 set c3=0
+where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 limit 2;
+ERROR 23000: Duplicate entry '0' for key 'PRIMARY'
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+# Duplicate value on update a primary key with ignore
+# and limit
+update ignore t1 set c3=0
+where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 limit 2;
+affected rows: 2
+info: Rows matched: 2 Changed: 2 Warnings: 0
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 0
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+# Update no rows found
+update t1 set c1=10
+where c1 <2 and exists (select 'X' from t1 a where a.c1 = t1.c1 + 10);
+affected rows: 3
+info: Rows matched: 3 Changed: 3 Warnings: 0
+select c1,c2,c3 from t1;
+c1 c2 c3
+10 1 1
+10 2 2
+10 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+# Update no rows changed
+drop trigger trg_t1;
+update t1 set c1=c1
+where c1 <2 and exists (select 'X' from t1 a where a.c1 = t1.c1);
+affected rows: 0
+info: Rows matched: 3 Changed: 0 Warnings: 0
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Check call of after trigger
+#
+create or replace trigger trg_t2 after update on t1 for each row
+begin
+declare msg varchar(100);
+if (new.c3 = 5) then
+set msg=concat('in after update trigger on ',new.c3);
+SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = msg;
+end if;
+end;
+/
+update t1 set c1=2
+where c3 in (select distinct a.c3 from t1 a where a.c1=t1.c1);
+ERROR 45000: in after update trigger on 5
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Check update with order by and after trigger
+#
+update t1 set c1=2
+where c3 in (select distinct a.c3 from t1 a where a.c1=t1.c1)
+order by t1.c2, t1.c1;
+ERROR 45000: in after update trigger on 5
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+drop view v1;
+#
+# Check update on view with check option
+#
+create view v1 as select * from t1 where c2=2 with check option;
+update v1 set c2=3 where c1=1;
+ERROR 44000: CHECK OPTION failed `test`.`v1`
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+update v1 set c2=(select max(c3) from v1) where c1=1;
+ERROR 44000: CHECK OPTION failed `test`.`v1`
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+update v1 set c2=(select min(va.c3) from v1 va), c1=0 where c1=1;
+select c1,c2,c3 from t1;
+c1 c2 c3
+0 2 2
+1 1 1
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+drop table tmp;
+drop view v1;
+drop table t1;
+#
+# Test on dynamic columns (blob)
+#
+create table assets (
+item_name varchar(32) primary key, -- A common attribute for all items
+dynamic_cols blob -- Dynamic columns will be stored here
+);
+INSERT INTO assets VALUES ('MariaDB T-shirt',
+COLUMN_CREATE('color', 'blue', 'size', 'XL'));
+INSERT INTO assets VALUES ('Thinkpad Laptop',
+COLUMN_CREATE('color', 'black', 'price', 500));
+SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color
+FROM assets;
+item_name color
+MariaDB T-shirt blue
+Thinkpad Laptop black
+UPDATE assets
+SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty', '3 years')
+WHERE item_name='Thinkpad Laptop';
+SELECT item_name,
+COLUMN_GET(dynamic_cols, 'warranty' as char) AS color
+FROM assets;
+item_name color
+MariaDB T-shirt NULL
+Thinkpad Laptop 3 years
+UPDATE assets
+SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty', '4 years')
+WHERE item_name in
+(select b.item_name from assets b
+where COLUMN_GET(b.dynamic_cols, 'color' as char) ='black');
+SELECT item_name,
+COLUMN_GET(dynamic_cols, 'warranty' as char) AS color
+FROM assets;
+item_name color
+MariaDB T-shirt NULL
+Thinkpad Laptop 4 years
+UPDATE assets SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty',
+(select COLUMN_GET(b.dynamic_cols, 'color' as char)
+from assets b
+where assets.item_name = item_name));
+SELECT item_name,
+COLUMN_GET(dynamic_cols, 'warranty' as char) AS color
+FROM assets;
+item_name color
+MariaDB T-shirt blue
+Thinkpad Laptop black
+drop table assets;
+#
+# Test on fulltext columns
+#
+CREATE TABLE ft2(copy TEXT,FULLTEXT(copy));
+INSERT INTO ft2(copy) VALUES
+('MySQL vs MariaDB database'),
+('Oracle vs MariaDB database'),
+('PostgreSQL vs MariaDB database'),
+('MariaDB overview'),
+('Foreign keys'),
+('Primary keys'),
+('Indexes'),
+('Transactions'),
+('Triggers');
+SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('database');
+copy
+MySQL vs MariaDB database
+Oracle vs MariaDB database
+PostgreSQL vs MariaDB database
+update ft2 set copy = (select max(concat('mykeyword ',substr(b.copy,1,5)))
+from ft2 b WHERE MATCH(b.copy) AGAINST('database'))
+where MATCH(copy) AGAINST('keys');
+SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('mykeyword');
+copy
+mykeyword Postg
+mykeyword Postg
+drop table ft2;
+#######################################
+# #
+# Engine Aria #
+# #
+#######################################
+set default_storage_engine=Aria;
+create table t1 (old_c1 integer,
+old_c2 integer,
+c1 integer,
+c2 integer,
+c3 integer);
+create view v1 as select * from t1 where c2=2;
+create trigger trg_t1 before update on t1 for each row
+begin
+set new.old_c1=old.c1;
+set new.old_c2=old.c2;
+end;
+/
+insert into t1(c1,c2,c3)
+values (1,1,1), (1,2,2), (1,3,3),
+(2,1,4), (2,2,5), (2,3,6),
+(2,4,7), (2,5,8);
+insert into t1 select NULL, NULL, c1+10,c2,c3+10 from t1;
+insert into t1 select NULL, NULL, c1+20,c2+1,c3+20 from t1;
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from t1;
+#######################################
+# Test without any index #
+#######################################
+#
+# Update with value from subquery on the same table
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status Table is already up to date
+explain select * from t1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
1->1 1
1->2 2 *
@@ -528,20 +2607,56 @@ concat(old_c1,'->',c1) c3 Changed
2->6 6 *
2->7 7 *
2->8 8 *
-rollback;
+11->11 11
+11->12 12 *
+11->13 13 *
+12->14 14 *
+12->15 15 *
+12->16 16 *
+12->17 17 *
+12->18 18 *
+21->21 21
+21->22 22 *
+21->23 23 *
+22->24 24 *
+22->25 25 *
+22->26 26 *
+22->27 27 *
+22->28 28 *
+31->31 31
+31->32 32 *
+31->33 33 *
+32->34 34 *
+32->35 35 *
+32->36 36 *
+32->37 37 *
+32->38 38 *
+truncate table t1;
+insert into t1 select * from tmp;
#
-# Update with search clause on the same table
+# Update with EXISTS subquery over the updated table
+# in WHERE + possibly sargable condition
#
-start transaction;
-update t1
-set c1=10
-where c1 <2
-and exists (select 'X'
- from t1 a
-where a.c1 = t1.c1);
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update t1 set c1=10 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+update t1 set c1=10 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
affected rows: 3
info: Rows matched: 3 Changed: 3 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ;
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
1->10 1 *
1->10 2 *
@@ -551,19 +2666,55 @@ NULL 5
NULL 6
NULL 7
NULL 8
-rollback;
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
#
-# Update via RANGE or INDEX access if an index or a primary key exists
+# Update with EXISTS subquery over the updated table
+# in WHERE + non-sargable condition
#
-explain update t1 set c1=0 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 > 3;
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY a index t1_c2 t1_c2 10 NULL 8 Using where; Using index; LooseScan
-1 PRIMARY t1 ref t1_c2 t1_c2 5 test.a.c2 1
-start transaction;
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
+explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
-affected rows: 4
-info: Rows matched: 4 Changed: 4 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+affected rows: 20
+info: Rows matched: 20 Changed: 20 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
NULL 1
NULL 2
@@ -573,13 +2724,57 @@ NULL 5
2->12 6 *
2->12 7 *
2->12 8 *
-rollback;
+NULL 11
+NULL 12
+11->21 13 *
+NULL 14
+NULL 15
+12->22 16 *
+12->22 17 *
+12->22 18 *
+NULL 21
+21->31 22 *
+21->31 23 *
+NULL 24
+22->32 25 *
+22->32 26 *
+22->32 27 *
+22->32 28 *
+NULL 31
+31->41 32 *
+31->41 33 *
+NULL 34
+32->42 35 *
+32->42 36 *
+32->42 37 *
+32->42 38 *
+truncate table t1;
+insert into t1 select * from tmp;
#
# Update with order by
#
-start transaction;
-update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3 order by c2;
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
+explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
+update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+affected rows: 20
+info: Rows matched: 20 Changed: 20 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
NULL 1
NULL 2
@@ -589,18 +2784,54 @@ NULL 5
2->12 6 *
2->12 7 *
2->12 8 *
-rollback;
+NULL 11
+NULL 12
+11->21 13 *
+NULL 14
+NULL 15
+12->22 16 *
+12->22 17 *
+12->22 18 *
+NULL 21
+21->31 22 *
+21->31 23 *
+NULL 24
+22->32 25 *
+22->32 26 *
+22->32 27 *
+22->32 28 *
+NULL 31
+31->41 32 *
+31->41 33 *
+NULL 34
+32->42 35 *
+32->42 36 *
+32->42 37 *
+32->42 38 *
+truncate table t1;
+insert into t1 select * from tmp;
#
-Update using a view in subquery
+# Update with a reference to view in subquery
+# in settable value
#
-start transaction;
-update t1
-set c1=c1 +(select max(a.c2)
-from v1 a
-where a.c1 = t1.c1) ;
-affected rows: 8
-info: Rows matched: 8 Changed: 8 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1 set c1=c1 +(select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+update t1 set c1=c1 +(select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
1->3 1 *
1->3 2 *
@@ -610,19 +2841,687 @@ concat(old_c1,'->',c1) c3 Changed
2->4 6 *
2->4 7 *
2->4 8 *
-rollback;
+11->13 11 *
+11->13 12 *
+11->13 13 *
+12->14 14 *
+12->14 15 *
+12->14 16 *
+12->14 17 *
+12->14 18 *
+21->23 21 *
+21->23 22 *
+21->23 23 *
+22->24 24 *
+22->24 25 *
+22->24 26 *
+22->24 27 *
+22->24 28 *
+31->33 31 *
+31->33 32 *
+31->33 33 *
+32->34 34 *
+32->34 35 *
+32->34 36 *
+32->34 37 *
+32->34 38 *
+truncate table t1;
+insert into t1 select * from tmp;
#
-# Update throw a view
+# Update view
#
-start transaction;
-update v1
-set c1=c1 + (select max(a.c2)
-from t1 a
-where a.c1 = v1.c1) +10
-where c3 > 3;
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from v1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using where
+explain update v1 set c1=c1 + (select max(a.c2) from t1 a
+where a.c1 = v1.c1) +10 where c3 > 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+update v1 set c1=c1 + (select max(a.c2) from t1 a
+where a.c1 = v1.c1) +10 where c3 > 3;
+affected rows: 7
+info: Rows matched: 7 Changed: 7 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+NULL 2
+NULL 3
+NULL 4
+2->17 5 *
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+11->24 12 *
+NULL 13
+NULL 14
+12->27 15 *
+NULL 16
+NULL 17
+NULL 18
+21->35 21 *
+NULL 22
+NULL 23
+22->38 24 *
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+31->45 31 *
+NULL 32
+NULL 33
+32->48 34 *
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update view with reference to the same view in subquery
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from v1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update v1 set c1=c1 + 1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+update v1 set c1=c1 + 1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
affected rows: 1
info: Rows matched: 1 Changed: 1 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+1->2 2 *
+NULL 3
+NULL 4
+NULL 5
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update view with EXISTS and reference to the same view in subquery
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from v1 where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update v1
+set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1)
+where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+update v1
+set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1)
+where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
+affected rows: 2
+info: Rows matched: 2 Changed: 2 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+1->11 2 *
+NULL 3
+NULL 4
+2->12 5 *
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with IN predicand over the updated table in WHERE
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
+select c3 from t1;
+c3
+111
+112
+113
+114
+115
+116
+117
+118
+121
+122
+123
+124
+125
+126
+127
+128
+131
+132
+133
+134
+135
+136
+137
+138
+141
+142
+143
+144
+145
+146
+147
+148
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with a limit
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2;
+affected rows: 2
+info: Rows matched: 2 Changed: 2 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+1->1 1
+1->2 2 *
+NULL 3
+NULL 4
+NULL 5
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with a limit and an order by
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 order by c3 desc limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using filesort
+explain update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using filesort
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 2;
+affected rows: 2
+info: Rows matched: 2 Changed: 2 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+NULL 2
+NULL 3
+NULL 4
+NULL 5
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+32->37 37 *
+32->38 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#######################################
+# Test with an index #
+#######################################
+create index t1_c2 on t1 (c2,c1);
+analyze table t1;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+#
+# Update with value from subquery on the same table
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status Table is already up to date
+explain select * from t1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+1->1 1
+1->2 2 *
+1->3 3 *
+2->4 4 *
+2->5 5 *
+2->6 6 *
+2->7 7 *
+2->8 8 *
+11->11 11
+11->12 12 *
+11->13 13 *
+12->14 14 *
+12->15 15 *
+12->16 16 *
+12->17 17 *
+12->18 18 *
+21->21 21
+21->22 22 *
+21->23 23 *
+22->24 24 *
+22->25 25 *
+22->26 26 *
+22->27 27 *
+22->28 28 *
+31->31 31
+31->32 32 *
+31->33 33 *
+32->34 34 *
+32->35 35 *
+32->36 36 *
+32->37 37 *
+32->38 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with EXISTS subquery over the updated table
+# in WHERE + possibly sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a index NULL t1_c2 10 NULL 32 Using where; Using index; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update t1 set c1=10 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a index NULL t1_c2 10 NULL 32 Using where; Using index; FirstMatch(t1)
+update t1 set c1=10 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
+affected rows: 3
+info: Rows matched: 3 Changed: 3 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+1->10 1 *
+1->10 2 *
+1->10 3 *
+NULL 4
+NULL 5
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with EXISTS subquery over the updated table
+# in WHERE + non-sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 range t1_c2 t1_c2 5 NULL 21 Using index condition
+1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c2 5 Using index; FirstMatch(t1)
+explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 range t1_c2 t1_c2 5 NULL 21 Using index condition
+1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c2 5 Using index; FirstMatch(t1)
+update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+affected rows: 20
+info: Rows matched: 20 Changed: 20 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+NULL 2
+1->11 3 *
+NULL 4
+NULL 5
+2->12 6 *
+2->12 7 *
+2->12 8 *
+NULL 11
+NULL 12
+11->21 13 *
+NULL 14
+NULL 15
+12->22 16 *
+12->22 17 *
+12->22 18 *
+NULL 21
+21->31 22 *
+21->31 23 *
+NULL 24
+22->32 25 *
+22->32 26 *
+22->32 27 *
+22->32 28 *
+NULL 31
+31->41 32 *
+31->41 33 *
+NULL 34
+32->42 35 *
+32->42 36 *
+32->42 37 *
+32->42 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with order by
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 range t1_c2 t1_c2 5 NULL 21 Using index condition
+1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c2 5 Using index; FirstMatch(t1)
+explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 range t1_c2 t1_c2 5 NULL 21 Using index condition
+1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c2 5 Using index; FirstMatch(t1)
+update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+affected rows: 20
+info: Rows matched: 20 Changed: 20 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+NULL 2
+1->11 3 *
+NULL 4
+NULL 5
+2->12 6 *
+2->12 7 *
+2->12 8 *
+NULL 11
+NULL 12
+11->21 13 *
+NULL 14
+NULL 15
+12->22 16 *
+12->22 17 *
+12->22 18 *
+NULL 21
+21->31 22 *
+21->31 23 *
+NULL 24
+22->32 25 *
+22->32 26 *
+22->32 27 *
+22->32 28 *
+NULL 31
+31->41 32 *
+31->41 33 *
+NULL 34
+32->42 35 *
+32->42 36 *
+32->42 37 *
+32->42 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with a reference to view in subquery
+# in settable value
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1 set c1=c1 +(select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 Using index
+update t1 set c1=c1 +(select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+1->3 1 *
+1->3 2 *
+1->3 3 *
+2->4 4 *
+2->4 5 *
+2->4 6 *
+2->4 7 *
+2->4 8 *
+11->13 11 *
+11->13 12 *
+11->13 13 *
+12->14 14 *
+12->14 15 *
+12->14 16 *
+12->14 17 *
+12->14 18 *
+21->23 21 *
+21->23 22 *
+21->23 23 *
+22->24 24 *
+22->24 25 *
+22->24 26 *
+22->24 27 *
+22->24 28 *
+31->33 31 *
+31->33 32 *
+31->33 33 *
+32->34 34 *
+32->34 35 *
+32->34 36 *
+32->34 37 *
+32->34 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update view
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from v1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ref t1_c2 t1_c2 5 const 8
+explain update v1 set c1=c1 + (select max(a.c2) from t1 a
+where a.c1 = v1.c1) +10 where c3 > 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ref t1_c2 t1_c2 5 const 8 Using where
+2 DEPENDENT SUBQUERY a index NULL t1_c2 10 NULL 32 Using where; Using index
+update v1 set c1=c1 + (select max(a.c2) from t1 a
+where a.c1 = v1.c1) +10 where c3 > 3;
+affected rows: 7
+info: Rows matched: 7 Changed: 7 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
NULL 1
NULL 2
@@ -632,20 +3531,55 @@ NULL 4
NULL 6
NULL 7
NULL 8
-rollback;
+NULL 11
+11->24 12 *
+NULL 13
+NULL 14
+12->27 15 *
+NULL 16
+NULL 17
+NULL 18
+21->35 21 *
+NULL 22
+NULL 23
+22->38 24 *
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+31->45 31 *
+NULL 32
+NULL 33
+32->48 34 *
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
#
-# Update through a view and using the view in subquery
+# Update view with reference to the same view in subquery
#
-start transaction;
-update v1
-set c1=c1 + 1
-where c1 <2
-and exists (select 'X'
- from v1 a
-where a.c1 = v1.c1);
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from v1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 range t1_c2 t1_c2 10 NULL 1 Using index condition
+1 PRIMARY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 Using index; FirstMatch(t1)
+explain update v1 set c1=c1 + 1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 range t1_c2 t1_c2 10 NULL 1 Using index condition; Using where
+2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,func 1 Using where; Using index
+update v1 set c1=c1 + 1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
affected rows: 1
info: Rows matched: 1 Changed: 1 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
NULL 1
1->2 2 *
@@ -655,22 +3589,57 @@ NULL 5
NULL 6
NULL 7
NULL 8
-rollback;
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
#
-# Update through a view and using the view in subquery
+# Update view with EXISTS and reference to the same view in subquery
#
-start transaction;
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from v1 where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 range t1_c2 t1_c2 10 NULL 2 Using index condition
+1 PRIMARY t1 ref t1_c2 t1_c2 5 const 8 Using index; FirstMatch(t1)
+explain update v1
+set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1)
+where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 range t1_c2 t1_c2 10 NULL 2 Using index condition
+3 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 5 const 8 Using where; Using index
+2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 Using index
update v1
-set c1=(select max(a.c1)+10
-from v1 a
-where a.c1 = v1.c1)
-where c1 <10
-and exists (select 'X'
- from v1 a
-where a.c2 = v1.c2);
+set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1)
+where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
affected rows: 2
info: Rows matched: 2 Changed: 2 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
NULL 1
1->11 2 *
@@ -680,41 +3649,107 @@ NULL 4
NULL 6
NULL 7
NULL 8
-rollback;
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
#
-# Update of the index or primary key (c3)
+# Update with IN predicand over the updated table in WHERE
#
-start transaction;
-explain update t1 set c3=c3+10 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+1 PRIMARY a ref t1_c2 t1_c2 10 test.t1.c2,test.t1.c1 1 Using index; FirstMatch(t1)
+explain update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 8 Using where
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
1 PRIMARY a ref t1_c2 t1_c2 10 test.t1.c2,test.t1.c1 1 Using index; FirstMatch(t1)
-update t1 set c3=c3+10 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
-affected rows: 8
-info: Rows matched: 8 Changed: 8 Warnings: 0
+update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
select c3 from t1;
c3
-11
-12
-13
-14
-15
-16
-17
-18
-rollback;
-#
-# update with a limit
-#
-start transaction;
+111
+112
+113
+114
+115
+116
+117
+118
+121
+122
+123
+124
+125
+126
+127
+128
+131
+132
+133
+134
+135
+136
+137
+138
+141
+142
+143
+144
+145
+146
+147
+148
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with a limit
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
update t1
-set c1=(select a.c3
-from t1 a
-where a.c3 = t1.c3)
-limit 2;
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2;
affected rows: 2
info: Rows matched: 2 Changed: 2 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ;
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
1->1 1
1->2 2 *
@@ -724,19 +3759,55 @@ NULL 5
NULL 6
NULL 7
NULL 8
-rollback;
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
#
-# update with a limit and an order by
+# Update with a limit and an order by
#
-start transaction;
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 order by c3 desc limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using filesort
+explain update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using filesort
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
update t1
-set c1=(select a.c3
-from t1 a
-where a.c3 = t1.c3)
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3)
order by c3 desc limit 2;
affected rows: 2
info: Rows matched: 2 Changed: 2 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ;
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
NULL 1
NULL 2
@@ -744,23 +3815,1336 @@ NULL 3
NULL 4
NULL 5
NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+32->37 37 *
+32->38 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#######################################
+# Test with a primary key #
+#######################################
+drop index t1_c2 on t1;
+alter table t1 add primary key (c3);
+analyze table t1;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+#
+# Update with value from subquery on the same table
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status Table is already up to date
+explain select * from t1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using index
+update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+1->1 1
+1->2 2 *
+1->3 3 *
+2->4 4 *
+2->5 5 *
+2->6 6 *
2->7 7 *
2->8 8 *
-rollback;
-Test with a primary key on updated columns
-drop index t1_c3 on t1;
-alter table t1 add primary key (c3);
+11->11 11
+11->12 12 *
+11->13 13 *
+12->14 14 *
+12->15 15 *
+12->16 16 *
+12->17 17 *
+12->18 18 *
+21->21 21
+21->22 22 *
+21->23 23 *
+22->24 24 *
+22->25 25 *
+22->26 26 *
+22->27 27 *
+22->28 28 *
+31->31 31
+31->32 32 *
+31->33 33 *
+32->34 34 *
+32->35 35 *
+32->36 36 *
+32->37 37 *
+32->38 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with EXISTS subquery over the updated table
+# in WHERE + possibly sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update t1 set c1=10 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+update t1 set c1=10 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
+affected rows: 3
+info: Rows matched: 3 Changed: 3 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+1->10 1 *
+1->10 2 *
+1->10 3 *
+NULL 4
+NULL 5
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with EXISTS subquery over the updated table
+# in WHERE + non-sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
+explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
+update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+affected rows: 20
+info: Rows matched: 20 Changed: 20 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+NULL 2
+1->11 3 *
+NULL 4
+NULL 5
+2->12 6 *
+2->12 7 *
+2->12 8 *
+NULL 11
+NULL 12
+11->21 13 *
+NULL 14
+NULL 15
+12->22 16 *
+12->22 17 *
+12->22 18 *
+NULL 21
+21->31 22 *
+21->31 23 *
+NULL 24
+22->32 25 *
+22->32 26 *
+22->32 27 *
+22->32 28 *
+NULL 31
+31->41 32 *
+31->41 33 *
+NULL 34
+32->42 35 *
+32->42 36 *
+32->42 37 *
+32->42 38 *
+truncate table t1;
+insert into t1 select * from tmp;
#
-# Update a with value from subquery on the same table, no search clause. ALL access
+# Update with order by
#
-start transaction;
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
+explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
+update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+affected rows: 20
+info: Rows matched: 20 Changed: 20 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+NULL 2
+1->11 3 *
+NULL 4
+NULL 5
+2->12 6 *
+2->12 7 *
+2->12 8 *
+NULL 11
+NULL 12
+11->21 13 *
+NULL 14
+NULL 15
+12->22 16 *
+12->22 17 *
+12->22 18 *
+NULL 21
+21->31 22 *
+21->31 23 *
+NULL 24
+22->32 25 *
+22->32 26 *
+22->32 27 *
+22->32 28 *
+NULL 31
+31->41 32 *
+31->41 33 *
+NULL 34
+32->42 35 *
+32->42 36 *
+32->42 37 *
+32->42 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with a reference to view in subquery
+# in settable value
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1 set c1=c1 +(select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+update t1 set c1=c1 +(select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+1->3 1 *
+1->3 2 *
+1->3 3 *
+2->4 4 *
+2->4 5 *
+2->4 6 *
+2->4 7 *
+2->4 8 *
+11->13 11 *
+11->13 12 *
+11->13 13 *
+12->14 14 *
+12->14 15 *
+12->14 16 *
+12->14 17 *
+12->14 18 *
+21->23 21 *
+21->23 22 *
+21->23 23 *
+22->24 24 *
+22->24 25 *
+22->24 26 *
+22->24 27 *
+22->24 28 *
+31->33 31 *
+31->33 32 *
+31->33 33 *
+32->34 34 *
+32->34 35 *
+32->34 36 *
+32->34 37 *
+32->34 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update view
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from v1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using where
+explain update v1 set c1=c1 + (select max(a.c2) from t1 a
+where a.c1 = v1.c1) +10 where c3 > 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 range PRIMARY PRIMARY 4 NULL 30 Using index condition; Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+update v1 set c1=c1 + (select max(a.c2) from t1 a
+where a.c1 = v1.c1) +10 where c3 > 3;
+affected rows: 7
+info: Rows matched: 7 Changed: 7 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+NULL 2
+NULL 3
+NULL 4
+2->17 5 *
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+11->24 12 *
+NULL 13
+NULL 14
+12->27 15 *
+NULL 16
+NULL 17
+NULL 18
+21->35 21 *
+NULL 22
+NULL 23
+22->38 24 *
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+31->45 31 *
+NULL 32
+NULL 33
+32->48 34 *
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update view with reference to the same view in subquery
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from v1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update v1 set c1=c1 + 1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+update v1 set c1=c1 + 1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+affected rows: 1
+info: Rows matched: 1 Changed: 1 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+1->2 2 *
+NULL 3
+NULL 4
+NULL 5
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update view with EXISTS and reference to the same view in subquery
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from v1 where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update v1
+set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1)
+where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+update v1
+set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1)
+where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
+affected rows: 2
+info: Rows matched: 2 Changed: 2 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+1->11 2 *
+NULL 3
+NULL 4
+2->12 5 *
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with IN predicand over the updated table in WHERE
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
+select c3 from t1;
+c3
+111
+112
+113
+114
+115
+116
+117
+118
+121
+122
+123
+124
+125
+126
+127
+128
+131
+132
+133
+134
+135
+136
+137
+138
+141
+142
+143
+144
+145
+146
+147
+148
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with a limit
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using index
update t1
-set c1=(select a.c3
-from t1 a
-where a.c3 = t1.c3);
-affected rows: 8
-info: Rows matched: 8 Changed: 8 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ;
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2;
+affected rows: 2
+info: Rows matched: 2 Changed: 2 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+1->1 1
+1->2 2 *
+NULL 3
+NULL 4
+NULL 5
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with a limit and an order by
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 order by c3 desc limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 index NULL PRIMARY 4 NULL 2
+explain update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 index NULL PRIMARY 4 NULL 2 Using buffer
+2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using index
+update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 2;
+affected rows: 2
+info: Rows matched: 2 Changed: 2 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+NULL 2
+NULL 3
+NULL 4
+NULL 5
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+32->37 37 *
+32->38 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+# Update with error "Subquery returns more than 1 row"
+update t1 set c2=(select c2 from t1);
+ERROR 21000: Subquery returns more than 1 row
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+# Update with error "Subquery returns more than 1 row"
+# and order by
+update t1 set c2=(select c2 from t1) order by c3;
+ERROR 21000: Subquery returns more than 1 row
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+# Duplicate value on update a primary key
+update t1 set c3=0
+where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+ERROR 23000: Duplicate entry '0' for key 'PRIMARY'
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 0
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+# Duplicate value on update a primary key with ignore
+update ignore t1 set c3=0
+where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+affected rows: 20
+info: Rows matched: 20 Changed: 20 Warnings: 0
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 0
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+# Duplicate value on update a primary key and limit
+update t1 set c3=0
+where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 limit 2;
+ERROR 23000: Duplicate entry '0' for key 'PRIMARY'
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 0
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+# Duplicate value on update a primary key with ignore
+# and limit
+update ignore t1 set c3=0
+where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 limit 2;
+affected rows: 2
+info: Rows matched: 2 Changed: 2 Warnings: 0
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 0
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+# Update no rows found
+update t1 set c1=10
+where c1 <2 and exists (select 'X' from t1 a where a.c1 = t1.c1 + 10);
+affected rows: 3
+info: Rows matched: 3 Changed: 3 Warnings: 0
+select c1,c2,c3 from t1;
+c1 c2 c3
+10 1 1
+10 2 2
+10 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+# Update no rows changed
+drop trigger trg_t1;
+update t1 set c1=c1
+where c1 <2 and exists (select 'X' from t1 a where a.c1 = t1.c1);
+affected rows: 0
+info: Rows matched: 3 Changed: 0 Warnings: 0
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Check call of after trigger
+#
+create or replace trigger trg_t2 after update on t1 for each row
+begin
+declare msg varchar(100);
+if (new.c3 = 5) then
+set msg=concat('in after update trigger on ',new.c3);
+SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = msg;
+end if;
+end;
+/
+update t1 set c1=2
+where c3 in (select distinct a.c3 from t1 a where a.c1=t1.c1);
+ERROR 45000: in after update trigger on 5
+select c1,c2,c3 from t1;
+c1 c2 c3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 1
+2 1 4
+2 2 2
+2 2 5
+2 3 3
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Check update with order by and after trigger
+#
+update t1 set c1=2
+where c3 in (select distinct a.c3 from t1 a where a.c1=t1.c1)
+order by t1.c2, t1.c1;
+ERROR 45000: in after update trigger on 5
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 3 3
+11 2 12
+11 3 13
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 1
+2 1 11
+2 1 14
+2 1 4
+2 2 2
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+drop view v1;
+#
+# Check update on view with check option
+#
+create view v1 as select * from t1 where c2=2 with check option;
+update v1 set c2=3 where c1=1;
+ERROR 44000: CHECK OPTION failed `test`.`v1`
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+update v1 set c2=(select max(c3) from v1) where c1=1;
+ERROR 44000: CHECK OPTION failed `test`.`v1`
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+update v1 set c2=(select min(va.c3) from v1 va), c1=0 where c1=1;
+select c1,c2,c3 from t1;
+c1 c2 c3
+0 2 2
+1 1 1
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+drop table tmp;
+drop view v1;
+drop table t1;
+#
+# Test on dynamic columns (blob)
+#
+create table assets (
+item_name varchar(32) primary key, -- A common attribute for all items
+dynamic_cols blob -- Dynamic columns will be stored here
+);
+INSERT INTO assets VALUES ('MariaDB T-shirt',
+COLUMN_CREATE('color', 'blue', 'size', 'XL'));
+INSERT INTO assets VALUES ('Thinkpad Laptop',
+COLUMN_CREATE('color', 'black', 'price', 500));
+SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color
+FROM assets;
+item_name color
+MariaDB T-shirt blue
+Thinkpad Laptop black
+UPDATE assets
+SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty', '3 years')
+WHERE item_name='Thinkpad Laptop';
+SELECT item_name,
+COLUMN_GET(dynamic_cols, 'warranty' as char) AS color
+FROM assets;
+item_name color
+MariaDB T-shirt NULL
+Thinkpad Laptop 3 years
+UPDATE assets
+SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty', '4 years')
+WHERE item_name in
+(select b.item_name from assets b
+where COLUMN_GET(b.dynamic_cols, 'color' as char) ='black');
+SELECT item_name,
+COLUMN_GET(dynamic_cols, 'warranty' as char) AS color
+FROM assets;
+item_name color
+MariaDB T-shirt NULL
+Thinkpad Laptop 4 years
+UPDATE assets SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty',
+(select COLUMN_GET(b.dynamic_cols, 'color' as char)
+from assets b
+where assets.item_name = item_name));
+SELECT item_name,
+COLUMN_GET(dynamic_cols, 'warranty' as char) AS color
+FROM assets;
+item_name color
+MariaDB T-shirt blue
+Thinkpad Laptop black
+drop table assets;
+#
+# Test on fulltext columns
+#
+CREATE TABLE ft2(copy TEXT,FULLTEXT(copy));
+INSERT INTO ft2(copy) VALUES
+('MySQL vs MariaDB database'),
+('Oracle vs MariaDB database'),
+('PostgreSQL vs MariaDB database'),
+('MariaDB overview'),
+('Foreign keys'),
+('Primary keys'),
+('Indexes'),
+('Transactions'),
+('Triggers');
+SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('database');
+copy
+MySQL vs MariaDB database
+Oracle vs MariaDB database
+PostgreSQL vs MariaDB database
+update ft2 set copy = (select max(concat('mykeyword ',substr(b.copy,1,5)))
+from ft2 b WHERE MATCH(b.copy) AGAINST('database'))
+where MATCH(copy) AGAINST('keys');
+SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('mykeyword');
+copy
+mykeyword Postg
+mykeyword Postg
+drop table ft2;
+#######################################
+# #
+# Engine MyISAM #
+# #
+#######################################
+set default_storage_engine=MyISAM;
+create table t1 (old_c1 integer,
+old_c2 integer,
+c1 integer,
+c2 integer,
+c3 integer);
+create view v1 as select * from t1 where c2=2;
+create trigger trg_t1 before update on t1 for each row
+begin
+set new.old_c1=old.c1;
+set new.old_c2=old.c2;
+end;
+/
+insert into t1(c1,c2,c3)
+values (1,1,1), (1,2,2), (1,3,3),
+(2,1,4), (2,2,5), (2,3,6),
+(2,4,7), (2,5,8);
+insert into t1 select NULL, NULL, c1+10,c2,c3+10 from t1;
+insert into t1 select NULL, NULL, c1+20,c2+1,c3+20 from t1;
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+create table tmp as select * from t1;
+#######################################
+# Test without any index #
+#######################################
+#
+# Update with value from subquery on the same table
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status Table is already up to date
+explain select * from t1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
1->1 1
1->2 2 *
@@ -770,20 +5154,56 @@ concat(old_c1,'->',c1) c3 Changed
2->6 6 *
2->7 7 *
2->8 8 *
-rollback;
+11->11 11
+11->12 12 *
+11->13 13 *
+12->14 14 *
+12->15 15 *
+12->16 16 *
+12->17 17 *
+12->18 18 *
+21->21 21
+21->22 22 *
+21->23 23 *
+22->24 24 *
+22->25 25 *
+22->26 26 *
+22->27 27 *
+22->28 28 *
+31->31 31
+31->32 32 *
+31->33 33 *
+32->34 34 *
+32->35 35 *
+32->36 36 *
+32->37 37 *
+32->38 38 *
+truncate table t1;
+insert into t1 select * from tmp;
#
-# Update with search clause on the same table
+# Update with EXISTS subquery over the updated table
+# in WHERE + possibly sargable condition
#
-start transaction;
-update t1
-set c1=10
-where c1 <2
-and exists (select 'X'
- from t1 a
-where a.c1 = t1.c1);
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update t1 set c1=10 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+update t1 set c1=10 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
affected rows: 3
info: Rows matched: 3 Changed: 3 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ;
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
1->10 1 *
1->10 2 *
@@ -793,19 +5213,55 @@ NULL 5
NULL 6
NULL 7
NULL 8
-rollback;
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
#
-# Update via RANGE or INDEX access if an index or a primary key exists
+# Update with EXISTS subquery over the updated table
+# in WHERE + non-sargable condition
#
-explain update t1 set c1=0 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 > 3;
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY a index t1_c2 t1_c2 10 NULL 8 Using where; Using index; LooseScan
-1 PRIMARY t1 ref t1_c2 t1_c2 5 test.a.c2 1
-start transaction;
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
+explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
-affected rows: 4
-info: Rows matched: 4 Changed: 4 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+affected rows: 20
+info: Rows matched: 20 Changed: 20 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
NULL 1
NULL 2
@@ -815,13 +5271,57 @@ NULL 5
2->12 6 *
2->12 7 *
2->12 8 *
-rollback;
+NULL 11
+NULL 12
+11->21 13 *
+NULL 14
+NULL 15
+12->22 16 *
+12->22 17 *
+12->22 18 *
+NULL 21
+21->31 22 *
+21->31 23 *
+NULL 24
+22->32 25 *
+22->32 26 *
+22->32 27 *
+22->32 28 *
+NULL 31
+31->41 32 *
+31->41 33 *
+NULL 34
+32->42 35 *
+32->42 36 *
+32->42 37 *
+32->42 38 *
+truncate table t1;
+insert into t1 select * from tmp;
#
# Update with order by
#
-start transaction;
-update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3 order by c2;
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
+explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
+update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+affected rows: 20
+info: Rows matched: 20 Changed: 20 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
NULL 1
NULL 2
@@ -831,18 +5331,54 @@ NULL 5
2->12 6 *
2->12 7 *
2->12 8 *
-rollback;
+NULL 11
+NULL 12
+11->21 13 *
+NULL 14
+NULL 15
+12->22 16 *
+12->22 17 *
+12->22 18 *
+NULL 21
+21->31 22 *
+21->31 23 *
+NULL 24
+22->32 25 *
+22->32 26 *
+22->32 27 *
+22->32 28 *
+NULL 31
+31->41 32 *
+31->41 33 *
+NULL 34
+32->42 35 *
+32->42 36 *
+32->42 37 *
+32->42 38 *
+truncate table t1;
+insert into t1 select * from tmp;
#
-Update using a view in subquery
+# Update with a reference to view in subquery
+# in settable value
#
-start transaction;
-update t1
-set c1=c1 +(select max(a.c2)
-from v1 a
-where a.c1 = t1.c1) ;
-affected rows: 8
-info: Rows matched: 8 Changed: 8 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1 set c1=c1 +(select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+update t1 set c1=c1 +(select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
1->3 1 *
1->3 2 *
@@ -852,19 +5388,687 @@ concat(old_c1,'->',c1) c3 Changed
2->4 6 *
2->4 7 *
2->4 8 *
-rollback;
+11->13 11 *
+11->13 12 *
+11->13 13 *
+12->14 14 *
+12->14 15 *
+12->14 16 *
+12->14 17 *
+12->14 18 *
+21->23 21 *
+21->23 22 *
+21->23 23 *
+22->24 24 *
+22->24 25 *
+22->24 26 *
+22->24 27 *
+22->24 28 *
+31->33 31 *
+31->33 32 *
+31->33 33 *
+32->34 34 *
+32->34 35 *
+32->34 36 *
+32->34 37 *
+32->34 38 *
+truncate table t1;
+insert into t1 select * from tmp;
#
-# Update throw a view
+# Update view
#
-start transaction;
-update v1
-set c1=c1 + (select max(a.c2)
-from t1 a
-where a.c1 = v1.c1) +10
-where c3 > 3;
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from v1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using where
+explain update v1 set c1=c1 + (select max(a.c2) from t1 a
+where a.c1 = v1.c1) +10 where c3 > 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+update v1 set c1=c1 + (select max(a.c2) from t1 a
+where a.c1 = v1.c1) +10 where c3 > 3;
+affected rows: 7
+info: Rows matched: 7 Changed: 7 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+NULL 2
+NULL 3
+NULL 4
+2->17 5 *
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+11->24 12 *
+NULL 13
+NULL 14
+12->27 15 *
+NULL 16
+NULL 17
+NULL 18
+21->35 21 *
+NULL 22
+NULL 23
+22->38 24 *
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+31->45 31 *
+NULL 32
+NULL 33
+32->48 34 *
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update view with reference to the same view in subquery
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from v1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update v1 set c1=c1 + 1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+update v1 set c1=c1 + 1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
affected rows: 1
info: Rows matched: 1 Changed: 1 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+1->2 2 *
+NULL 3
+NULL 4
+NULL 5
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update view with EXISTS and reference to the same view in subquery
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from v1 where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update v1
+set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1)
+where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+update v1
+set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1)
+where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
+affected rows: 2
+info: Rows matched: 2 Changed: 2 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+1->11 2 *
+NULL 3
+NULL 4
+2->12 5 *
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with IN predicand over the updated table in WHERE
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
+select c3 from t1;
+c3
+111
+112
+113
+114
+115
+116
+117
+118
+121
+122
+123
+124
+125
+126
+127
+128
+131
+132
+133
+134
+135
+136
+137
+138
+141
+142
+143
+144
+145
+146
+147
+148
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with a limit
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2;
+affected rows: 2
+info: Rows matched: 2 Changed: 2 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+1->1 1
+1->2 2 *
+NULL 3
+NULL 4
+NULL 5
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with a limit and an order by
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 order by c3 desc limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using filesort
+explain update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using filesort
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 2;
+affected rows: 2
+info: Rows matched: 2 Changed: 2 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+NULL 2
+NULL 3
+NULL 4
+NULL 5
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+32->37 37 *
+32->38 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#######################################
+# Test with an index #
+#######################################
+create index t1_c2 on t1 (c2,c1);
+analyze table t1;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+#
+# Update with value from subquery on the same table
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status Table is already up to date
+explain select * from t1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+1->1 1
+1->2 2 *
+1->3 3 *
+2->4 4 *
+2->5 5 *
+2->6 6 *
+2->7 7 *
+2->8 8 *
+11->11 11
+11->12 12 *
+11->13 13 *
+12->14 14 *
+12->15 15 *
+12->16 16 *
+12->17 17 *
+12->18 18 *
+21->21 21
+21->22 22 *
+21->23 23 *
+22->24 24 *
+22->25 25 *
+22->26 26 *
+22->27 27 *
+22->28 28 *
+31->31 31
+31->32 32 *
+31->33 33 *
+32->34 34 *
+32->35 35 *
+32->36 36 *
+32->37 37 *
+32->38 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with EXISTS subquery over the updated table
+# in WHERE + possibly sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a index NULL t1_c2 10 NULL 32 Using where; Using index; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update t1 set c1=10 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a index NULL t1_c2 10 NULL 32 Using where; Using index; FirstMatch(t1)
+update t1 set c1=10 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
+affected rows: 3
+info: Rows matched: 3 Changed: 3 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+1->10 1 *
+1->10 2 *
+1->10 3 *
+NULL 4
+NULL 5
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with EXISTS subquery over the updated table
+# in WHERE + non-sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c2 5 Using index; FirstMatch(t1)
+explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c2 5 Using index; FirstMatch(t1)
+update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+affected rows: 20
+info: Rows matched: 20 Changed: 20 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+NULL 2
+1->11 3 *
+NULL 4
+NULL 5
+2->12 6 *
+2->12 7 *
+2->12 8 *
+NULL 11
+NULL 12
+11->21 13 *
+NULL 14
+NULL 15
+12->22 16 *
+12->22 17 *
+12->22 18 *
+NULL 21
+21->31 22 *
+21->31 23 *
+NULL 24
+22->32 25 *
+22->32 26 *
+22->32 27 *
+22->32 28 *
+NULL 31
+31->41 32 *
+31->41 33 *
+NULL 34
+32->42 35 *
+32->42 36 *
+32->42 37 *
+32->42 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with order by
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where; Using filesort
+1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c2 5 Using index; FirstMatch(t1)
+explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where; Using filesort
+1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c2 5 Using index; FirstMatch(t1)
+update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+affected rows: 20
+info: Rows matched: 20 Changed: 20 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+NULL 2
+1->11 3 *
+NULL 4
+NULL 5
+2->12 6 *
+2->12 7 *
+2->12 8 *
+NULL 11
+NULL 12
+11->21 13 *
+NULL 14
+NULL 15
+12->22 16 *
+12->22 17 *
+12->22 18 *
+NULL 21
+21->31 22 *
+21->31 23 *
+NULL 24
+22->32 25 *
+22->32 26 *
+22->32 27 *
+22->32 28 *
+NULL 31
+31->41 32 *
+31->41 33 *
+NULL 34
+32->42 35 *
+32->42 36 *
+32->42 37 *
+32->42 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with a reference to view in subquery
+# in settable value
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1 set c1=c1 +(select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 Using index
+update t1 set c1=c1 +(select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+1->3 1 *
+1->3 2 *
+1->3 3 *
+2->4 4 *
+2->4 5 *
+2->4 6 *
+2->4 7 *
+2->4 8 *
+11->13 11 *
+11->13 12 *
+11->13 13 *
+12->14 14 *
+12->14 15 *
+12->14 16 *
+12->14 17 *
+12->14 18 *
+21->23 21 *
+21->23 22 *
+21->23 23 *
+22->24 24 *
+22->24 25 *
+22->24 26 *
+22->24 27 *
+22->24 28 *
+31->33 31 *
+31->33 32 *
+31->33 33 *
+32->34 34 *
+32->34 35 *
+32->34 36 *
+32->34 37 *
+32->34 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update view
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from v1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ref t1_c2 t1_c2 5 const 8
+explain update v1 set c1=c1 + (select max(a.c2) from t1 a
+where a.c1 = v1.c1) +10 where c3 > 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ref t1_c2 t1_c2 5 const 8 Using where
+2 DEPENDENT SUBQUERY a index NULL t1_c2 10 NULL 32 Using where; Using index
+update v1 set c1=c1 + (select max(a.c2) from t1 a
+where a.c1 = v1.c1) +10 where c3 > 3;
+affected rows: 7
+info: Rows matched: 7 Changed: 7 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
NULL 1
NULL 2
@@ -874,20 +6078,55 @@ NULL 4
NULL 6
NULL 7
NULL 8
-rollback;
+NULL 11
+11->24 12 *
+NULL 13
+NULL 14
+12->27 15 *
+NULL 16
+NULL 17
+NULL 18
+21->35 21 *
+NULL 22
+NULL 23
+22->38 24 *
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+31->45 31 *
+NULL 32
+NULL 33
+32->48 34 *
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
#
-# Update through a view and using the view in subquery
+# Update view with reference to the same view in subquery
#
-start transaction;
-update v1
-set c1=c1 + 1
-where c1 <2
-and exists (select 'X'
- from v1 a
-where a.c1 = v1.c1);
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from v1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 range t1_c2 t1_c2 10 NULL 1 Using index condition
+1 PRIMARY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 Using index; FirstMatch(t1)
+explain update v1 set c1=c1 + 1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 range t1_c2 t1_c2 10 NULL 1 Using index condition; Using where
+2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,func 1 Using where; Using index
+update v1 set c1=c1 + 1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
affected rows: 1
info: Rows matched: 1 Changed: 1 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
NULL 1
1->2 2 *
@@ -897,22 +6136,57 @@ NULL 5
NULL 6
NULL 7
NULL 8
-rollback;
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
#
-# Update through a view and using the view in subquery
+# Update view with EXISTS and reference to the same view in subquery
#
-start transaction;
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from v1 where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 range t1_c2 t1_c2 10 NULL 2 Using index condition
+1 PRIMARY t1 ref t1_c2 t1_c2 5 const 8 Using index; FirstMatch(t1)
+explain update v1
+set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1)
+where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 range t1_c2 t1_c2 10 NULL 2 Using index condition
+3 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 5 const 8 Using where; Using index
+2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 Using index
update v1
-set c1=(select max(a.c1)+10
-from v1 a
-where a.c1 = v1.c1)
-where c1 <10
-and exists (select 'X'
- from v1 a
-where a.c2 = v1.c2);
+set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1)
+where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
affected rows: 2
info: Rows matched: 2 Changed: 2 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
NULL 1
1->11 2 *
@@ -922,41 +6196,107 @@ NULL 4
NULL 6
NULL 7
NULL 8
-rollback;
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
#
-# Update of the index or primary key (c3)
+# Update with IN predicand over the updated table in WHERE
#
-start transaction;
-explain update t1 set c3=c3+10 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+1 PRIMARY a ref t1_c2 t1_c2 10 test.t1.c2,test.t1.c1 1 Using index; FirstMatch(t1)
+explain update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 8 Using where
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
1 PRIMARY a ref t1_c2 t1_c2 10 test.t1.c2,test.t1.c1 1 Using index; FirstMatch(t1)
-update t1 set c3=c3+10 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
-affected rows: 8
-info: Rows matched: 8 Changed: 8 Warnings: 0
+update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
select c3 from t1;
c3
-11
-14
-12
-15
-13
-16
-17
-18
-rollback;
-#
-# update with a limit
-#
-start transaction;
+111
+112
+113
+114
+115
+116
+117
+118
+121
+122
+123
+124
+125
+126
+127
+128
+131
+132
+133
+134
+135
+136
+137
+138
+141
+142
+143
+144
+145
+146
+147
+148
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with a limit
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
update t1
-set c1=(select a.c3
-from t1 a
-where a.c3 = t1.c3)
-limit 2;
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2;
affected rows: 2
info: Rows matched: 2 Changed: 2 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ;
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
1->1 1
1->2 2 *
@@ -966,19 +6306,55 @@ NULL 5
NULL 6
NULL 7
NULL 8
-rollback;
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
#
-# update with a limit and an order by
+# Update with a limit and an order by
#
-start transaction;
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 order by c3 desc limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using filesort
+explain update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using filesort
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
update t1
-set c1=(select a.c3
-from t1 a
-where a.c3 = t1.c3)
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3)
order by c3 desc limit 2;
affected rows: 2
info: Rows matched: 2 Changed: 2 Warnings: 0
-select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ;
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
concat(old_c1,'->',c1) c3 Changed
NULL 1
NULL 2
@@ -986,58 +6362,996 @@ NULL 3
NULL 4
NULL 5
NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+32->37 37 *
+32->38 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#######################################
+# Test with a primary key #
+#######################################
+drop index t1_c2 on t1;
+alter table t1 add primary key (c3);
+analyze table t1;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+#
+# Update with value from subquery on the same table
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status Table is already up to date
+explain select * from t1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using index
+update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+1->1 1
+1->2 2 *
+1->3 3 *
+2->4 4 *
+2->5 5 *
+2->6 6 *
2->7 7 *
2->8 8 *
-rollback;
+11->11 11
+11->12 12 *
+11->13 13 *
+12->14 14 *
+12->15 15 *
+12->16 16 *
+12->17 17 *
+12->18 18 *
+21->21 21
+21->22 22 *
+21->23 23 *
+22->24 24 *
+22->25 25 *
+22->26 26 *
+22->27 27 *
+22->28 28 *
+31->31 31
+31->32 32 *
+31->33 33 *
+32->34 34 *
+32->35 35 *
+32->36 36 *
+32->37 37 *
+32->38 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with EXISTS subquery over the updated table
+# in WHERE + possibly sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update t1 set c1=10 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+update t1 set c1=10 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
+affected rows: 3
+info: Rows matched: 3 Changed: 3 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+1->10 1 *
+1->10 2 *
+1->10 3 *
+NULL 4
+NULL 5
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with EXISTS subquery over the updated table
+# in WHERE + non-sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
+explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
+update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+affected rows: 20
+info: Rows matched: 20 Changed: 20 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+NULL 2
+1->11 3 *
+NULL 4
+NULL 5
+2->12 6 *
+2->12 7 *
+2->12 8 *
+NULL 11
+NULL 12
+11->21 13 *
+NULL 14
+NULL 15
+12->22 16 *
+12->22 17 *
+12->22 18 *
+NULL 21
+21->31 22 *
+21->31 23 *
+NULL 24
+22->32 25 *
+22->32 26 *
+22->32 27 *
+22->32 28 *
+NULL 31
+31->41 32 *
+31->41 33 *
+NULL 34
+32->42 35 *
+32->42 36 *
+32->42 37 *
+32->42 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with order by
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
+explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
+update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+affected rows: 20
+info: Rows matched: 20 Changed: 20 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+NULL 2
+1->11 3 *
+NULL 4
+NULL 5
+2->12 6 *
+2->12 7 *
+2->12 8 *
+NULL 11
+NULL 12
+11->21 13 *
+NULL 14
+NULL 15
+12->22 16 *
+12->22 17 *
+12->22 18 *
+NULL 21
+21->31 22 *
+21->31 23 *
+NULL 24
+22->32 25 *
+22->32 26 *
+22->32 27 *
+22->32 28 *
+NULL 31
+31->41 32 *
+31->41 33 *
+NULL 34
+32->42 35 *
+32->42 36 *
+32->42 37 *
+32->42 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with a reference to view in subquery
+# in settable value
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1 set c1=c1 +(select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+update t1 set c1=c1 +(select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+1->3 1 *
+1->3 2 *
+1->3 3 *
+2->4 4 *
+2->4 5 *
+2->4 6 *
+2->4 7 *
+2->4 8 *
+11->13 11 *
+11->13 12 *
+11->13 13 *
+12->14 14 *
+12->14 15 *
+12->14 16 *
+12->14 17 *
+12->14 18 *
+21->23 21 *
+21->23 22 *
+21->23 23 *
+22->24 24 *
+22->24 25 *
+22->24 26 *
+22->24 27 *
+22->24 28 *
+31->33 31 *
+31->33 32 *
+31->33 33 *
+32->34 34 *
+32->34 35 *
+32->34 36 *
+32->34 37 *
+32->34 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update view
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from v1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using where
+explain update v1 set c1=c1 + (select max(a.c2) from t1 a
+where a.c1 = v1.c1) +10 where c3 > 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL PRIMARY NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+update v1 set c1=c1 + (select max(a.c2) from t1 a
+where a.c1 = v1.c1) +10 where c3 > 3;
+affected rows: 7
+info: Rows matched: 7 Changed: 7 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+NULL 2
+NULL 3
+NULL 4
+2->17 5 *
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+11->24 12 *
+NULL 13
+NULL 14
+12->27 15 *
+NULL 16
+NULL 17
+NULL 18
+21->35 21 *
+NULL 22
+NULL 23
+22->38 24 *
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+31->45 31 *
+NULL 32
+NULL 33
+32->48 34 *
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update view with reference to the same view in subquery
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from v1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update v1 set c1=c1 + 1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+update v1 set c1=c1 + 1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+affected rows: 1
+info: Rows matched: 1 Changed: 1 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+1->2 2 *
+NULL 3
+NULL 4
+NULL 5
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update view with EXISTS and reference to the same view in subquery
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from v1 where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update v1
+set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1)
+where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+update v1
+set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1)
+where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
+affected rows: 2
+info: Rows matched: 2 Changed: 2 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+1->11 2 *
+NULL 3
+NULL 4
+2->12 5 *
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with IN predicand over the updated table in WHERE
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
+select c3 from t1;
+c3
+111
+112
+113
+114
+115
+116
+117
+118
+121
+122
+123
+124
+125
+126
+127
+128
+131
+132
+133
+134
+135
+136
+137
+138
+141
+142
+143
+144
+145
+146
+147
+148
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with a limit
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using index
+update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2;
+affected rows: 2
+info: Rows matched: 2 Changed: 2 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+1->1 1
+1->2 2 *
+NULL 3
+NULL 4
+NULL 5
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with a limit and an order by
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+explain select * from t1 order by c3 desc limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 index NULL PRIMARY 4 NULL 2
+explain update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 index NULL PRIMARY 4 NULL 2 Using buffer
+2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using index
+update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 2;
+affected rows: 2
+info: Rows matched: 2 Changed: 2 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+NULL 2
+NULL 3
+NULL 4
+NULL 5
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+32->37 37 *
+32->38 38 *
+truncate table t1;
+insert into t1 select * from tmp;
# Update with error "Subquery returns more than 1 row"
update t1 set c2=(select c2 from t1);
ERROR 21000: Subquery returns more than 1 row
-# Update with error "Subquery returns more than 1 row" and order by
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+# Update with error "Subquery returns more than 1 row"
+# and order by
update t1 set c2=(select c2 from t1) order by c3;
ERROR 21000: Subquery returns more than 1 row
-Duplicate value on update a primary key
-start transaction;
-update t1 set c3=0 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+# Duplicate value on update a primary key
+update t1 set c3=0
+where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
ERROR 23000: Duplicate entry '0' for key 'PRIMARY'
-rollback;
-Duplicate value on update a primary key with ignore
-start transaction;
-update ignore t1 set c3=0 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
-affected rows: 4
-info: Rows matched: 4 Changed: 4 Warnings: 0
-rollback;
-Duplicate value on update a primary key and limit
-start transaction;
-update t1 set c3=0 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3 limit 2;
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 0
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+# Duplicate value on update a primary key with ignore
+update ignore t1 set c3=0
+where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+affected rows: 20
+info: Rows matched: 20 Changed: 20 Warnings: 0
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 0
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+# Duplicate value on update a primary key and limit
+update t1 set c3=0
+where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 limit 2;
ERROR 23000: Duplicate entry '0' for key 'PRIMARY'
-rollback;
-Duplicate value on update a primary key with ignore and limit
-start transaction;
-update ignore t1 set c3=0 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3 limit 2;
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 0
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+# Duplicate value on update a primary key with ignore
+# and limit
+update ignore t1 set c3=0
+where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 limit 2;
affected rows: 2
info: Rows matched: 2 Changed: 2 Warnings: 0
-rollback;
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 0
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
# Update no rows found
-update t1
-set c1=10
-where c1 <2
-and exists (select 'X'
- from t1 a
-where a.c1 = t1.c1 + 10);
-affected rows: 0
-info: Rows matched: 0 Changed: 0 Warnings: 0
+update t1 set c1=10
+where c1 <2 and exists (select 'X' from t1 a where a.c1 = t1.c1 + 10);
+affected rows: 3
+info: Rows matched: 3 Changed: 3 Warnings: 0
+select c1,c2,c3 from t1;
+c1 c2 c3
+10 1 1
+10 2 2
+10 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
# Update no rows changed
drop trigger trg_t1;
-start transaction;
-update t1
-set c1=c1
-where c1 <2
-and exists (select 'X'
- from t1 a
-where a.c1 = t1.c1);
+update t1 set c1=c1
+where c1 <2 and exists (select 'X' from t1 a where a.c1 = t1.c1);
affected rows: 0
info: Rows matched: 3 Changed: 0 Warnings: 0
-rollback;
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
#
# Check call of after trigger
#
@@ -1050,61 +7364,208 @@ SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = msg;
end if;
end;
/
-update t1 set c1=2 where c3 in (select distinct a.c3 from t1 a where a.c1=t1.c1);
+update t1 set c1=2
+where c3 in (select distinct a.c3 from t1 a where a.c1=t1.c1);
ERROR 45000: in after update trigger on 5
+select c1,c2,c3 from t1;
+c1 c2 c3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 1
+2 1 4
+2 2 2
+2 2 5
+2 3 3
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
#
# Check update with order by and after trigger
#
-update t1 set c1=2 where c3 in (select distinct a.c3 from t1 a where a.c1=t1.c1) order by t1.c2;
+update t1 set c1=2
+where c3 in (select distinct a.c3 from t1 a where a.c1=t1.c1)
+order by t1.c2, t1.c1;
ERROR 45000: in after update trigger on 5
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 3 3
+11 2 12
+11 3 13
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 1
+2 1 11
+2 1 14
+2 1 4
+2 2 2
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
drop view v1;
#
# Check update on view with check option
#
create view v1 as select * from t1 where c2=2 with check option;
-start transaction;
update v1 set c2=3 where c1=1;
ERROR 44000: CHECK OPTION failed `test`.`v1`
-rollback;
-start transaction;
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
update v1 set c2=(select max(c3) from v1) where c1=1;
ERROR 44000: CHECK OPTION failed `test`.`v1`
-rollback;
-start transaction;
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
update v1 set c2=(select min(va.c3) from v1 va), c1=0 where c1=1;
-rollback;
-drop view v1;
-drop table t1;
-#
-# Test with a temporary table
-#
-create temporary table t1 (c1 integer, c2 integer, c3 integer) engine=InnoDb;
-insert into t1(c1,c2,c3) values (1,1,1);
-insert into t1(c1,c2,c3) values (1,2,2);
-insert into t1(c1,c2,c3) values (1,3,3);
-insert into t1(c1,c2,c3) values (2,1,4);
-insert into t1(c1,c2,c3) values (2,2,5);
-insert into t1(c1,c2,c3) values (2,3,6);
-insert into t1(c1,c2,c3) values (2,4,7);
-insert into t1(c1,c2,c3) values (2,5,8);
-start transaction;
-update t1
-set c1=(select a.c2
-from t1 a
-where a.c3 = t1.c3) limit 3;
-affected rows: 2
-info: Rows matched: 3 Changed: 2 Warnings: 0
-select * from t1 ;
+select c1,c2,c3 from t1;
c1 c2 c3
+0 2 2
1 1 1
-2 2 2
-3 3 3
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
2 1 4
2 2 5
2 3 6
2 4 7
2 5 8
-rollback;
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+drop table tmp;
+drop view v1;
drop table t1;
#
# Test on dynamic columns (blob)
@@ -1113,37 +7574,50 @@ create table assets (
item_name varchar(32) primary key, -- A common attribute for all items
dynamic_cols blob -- Dynamic columns will be stored here
);
-INSERT INTO assets VALUES ('MariaDB T-shirt', COLUMN_CREATE('color', 'blue', 'size', 'XL'));
-INSERT INTO assets VALUES ('Thinkpad Laptop', COLUMN_CREATE('color', 'black', 'price', 500));
-SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color FROM assets;
+INSERT INTO assets VALUES ('MariaDB T-shirt',
+COLUMN_CREATE('color', 'blue', 'size', 'XL'));
+INSERT INTO assets VALUES ('Thinkpad Laptop',
+COLUMN_CREATE('color', 'black', 'price', 500));
+SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color
+FROM assets;
item_name color
MariaDB T-shirt blue
Thinkpad Laptop black
-UPDATE assets SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty', '3 years') WHERE item_name='Thinkpad Laptop';
-SELECT item_name, COLUMN_GET(dynamic_cols, 'warranty' as char) AS color FROM assets;
+UPDATE assets
+SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty', '3 years')
+WHERE item_name='Thinkpad Laptop';
+SELECT item_name,
+COLUMN_GET(dynamic_cols, 'warranty' as char) AS color
+FROM assets;
item_name color
MariaDB T-shirt NULL
Thinkpad Laptop 3 years
-UPDATE assets SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty', '4 years')
-WHERE item_name in (select b.item_name
-from assets b
+UPDATE assets
+SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty', '4 years')
+WHERE item_name in
+(select b.item_name from assets b
where COLUMN_GET(b.dynamic_cols, 'color' as char) ='black');
-SELECT item_name, COLUMN_GET(dynamic_cols, 'warranty' as char) AS color FROM assets;
+SELECT item_name,
+COLUMN_GET(dynamic_cols, 'warranty' as char) AS color
+FROM assets;
item_name color
MariaDB T-shirt NULL
Thinkpad Laptop 4 years
-UPDATE assets SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty', (select COLUMN_GET(b.dynamic_cols, 'color' as char)
+UPDATE assets SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty',
+(select COLUMN_GET(b.dynamic_cols, 'color' as char)
from assets b
where assets.item_name = item_name));
-SELECT item_name, COLUMN_GET(dynamic_cols, 'warranty' as char) AS color FROM assets;
+SELECT item_name,
+COLUMN_GET(dynamic_cols, 'warranty' as char) AS color
+FROM assets;
item_name color
MariaDB T-shirt blue
Thinkpad Laptop black
-drop table assets ;
+drop table assets;
#
# Test on fulltext columns
#
-CREATE TABLE ft2(copy TEXT,FULLTEXT(copy)) ENGINE=MyISAM;
+CREATE TABLE ft2(copy TEXT,FULLTEXT(copy));
INSERT INTO ft2(copy) VALUES
('MySQL vs MariaDB database'),
('Oracle vs MariaDB database'),
@@ -1159,17 +7633,2488 @@ copy
MySQL vs MariaDB database
Oracle vs MariaDB database
PostgreSQL vs MariaDB database
-update ft2 set copy = (select max(concat('mykeyword ',substr(b.copy,1,5))) from ft2 b WHERE MATCH(b.copy) AGAINST('database'))
+update ft2 set copy = (select max(concat('mykeyword ',substr(b.copy,1,5)))
+from ft2 b WHERE MATCH(b.copy) AGAINST('database'))
where MATCH(copy) AGAINST('keys');
SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('mykeyword');
copy
mykeyword Postg
mykeyword Postg
drop table ft2;
+#######################################
+# #
+# Engine MEMORY #
+# #
+#######################################
+set default_storage_engine=MEMORY;
+create table t1 (old_c1 integer,
+old_c2 integer,
+c1 integer,
+c2 integer,
+c3 integer);
+create view v1 as select * from t1 where c2=2;
+create trigger trg_t1 before update on t1 for each row
+begin
+set new.old_c1=old.c1;
+set new.old_c2=old.c2;
+end;
+/
+insert into t1(c1,c2,c3)
+values (1,1,1), (1,2,2), (1,3,3),
+(2,1,4), (2,2,5), (2,3,6),
+(2,4,7), (2,5,8);
+insert into t1 select NULL, NULL, c1+10,c2,c3+10 from t1;
+insert into t1 select NULL, NULL, c1+20,c2+1,c3+20 from t1;
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+create table tmp as select * from t1;
+#######################################
+# Test without any index #
+#######################################
+#
+# Update with value from subquery on the same table
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+explain select * from t1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+1->1 1
+1->2 2 *
+1->3 3 *
+2->4 4 *
+2->5 5 *
+2->6 6 *
+2->7 7 *
+2->8 8 *
+11->11 11
+11->12 12 *
+11->13 13 *
+12->14 14 *
+12->15 15 *
+12->16 16 *
+12->17 17 *
+12->18 18 *
+21->21 21
+21->22 22 *
+21->23 23 *
+22->24 24 *
+22->25 25 *
+22->26 26 *
+22->27 27 *
+22->28 28 *
+31->31 31
+31->32 32 *
+31->33 33 *
+32->34 34 *
+32->35 35 *
+32->36 36 *
+32->37 37 *
+32->38 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with EXISTS subquery over the updated table
+# in WHERE + possibly sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+explain select * from t1 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update t1 set c1=10 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+update t1 set c1=10 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
+affected rows: 3
+info: Rows matched: 3 Changed: 3 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+1->10 1 *
+1->10 2 *
+1->10 3 *
+NULL 4
+NULL 5
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with EXISTS subquery over the updated table
+# in WHERE + non-sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
+explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
+update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+affected rows: 20
+info: Rows matched: 20 Changed: 20 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+NULL 2
+1->11 3 *
+NULL 4
+NULL 5
+2->12 6 *
+2->12 7 *
+2->12 8 *
+NULL 11
+NULL 12
+11->21 13 *
+NULL 14
+NULL 15
+12->22 16 *
+12->22 17 *
+12->22 18 *
+NULL 21
+21->31 22 *
+21->31 23 *
+NULL 24
+22->32 25 *
+22->32 26 *
+22->32 27 *
+22->32 28 *
+NULL 31
+31->41 32 *
+31->41 33 *
+NULL 34
+32->42 35 *
+32->42 36 *
+32->42 37 *
+32->42 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with order by
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
+explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
+update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+affected rows: 20
+info: Rows matched: 20 Changed: 20 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+NULL 2
+1->11 3 *
+NULL 4
+NULL 5
+2->12 6 *
+2->12 7 *
+2->12 8 *
+NULL 11
+NULL 12
+11->21 13 *
+NULL 14
+NULL 15
+12->22 16 *
+12->22 17 *
+12->22 18 *
+NULL 21
+21->31 22 *
+21->31 23 *
+NULL 24
+22->32 25 *
+22->32 26 *
+22->32 27 *
+22->32 28 *
+NULL 31
+31->41 32 *
+31->41 33 *
+NULL 34
+32->42 35 *
+32->42 36 *
+32->42 37 *
+32->42 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with a reference to view in subquery
+# in settable value
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+explain select * from t1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1 set c1=c1 +(select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+update t1 set c1=c1 +(select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+1->3 1 *
+1->3 2 *
+1->3 3 *
+2->4 4 *
+2->4 5 *
+2->4 6 *
+2->4 7 *
+2->4 8 *
+11->13 11 *
+11->13 12 *
+11->13 13 *
+12->14 14 *
+12->14 15 *
+12->14 16 *
+12->14 17 *
+12->14 18 *
+21->23 21 *
+21->23 22 *
+21->23 23 *
+22->24 24 *
+22->24 25 *
+22->24 26 *
+22->24 27 *
+22->24 28 *
+31->33 31 *
+31->33 32 *
+31->33 33 *
+32->34 34 *
+32->34 35 *
+32->34 36 *
+32->34 37 *
+32->34 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update view
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+explain select * from v1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using where
+explain update v1 set c1=c1 + (select max(a.c2) from t1 a
+where a.c1 = v1.c1) +10 where c3 > 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+update v1 set c1=c1 + (select max(a.c2) from t1 a
+where a.c1 = v1.c1) +10 where c3 > 3;
+affected rows: 7
+info: Rows matched: 7 Changed: 7 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+NULL 2
+NULL 3
+NULL 4
+2->17 5 *
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+11->24 12 *
+NULL 13
+NULL 14
+12->27 15 *
+NULL 16
+NULL 17
+NULL 18
+21->35 21 *
+NULL 22
+NULL 23
+22->38 24 *
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+31->45 31 *
+NULL 32
+NULL 33
+32->48 34 *
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update view with reference to the same view in subquery
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+explain select * from v1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update v1 set c1=c1 + 1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+update v1 set c1=c1 + 1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+affected rows: 1
+info: Rows matched: 1 Changed: 1 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+1->2 2 *
+NULL 3
+NULL 4
+NULL 5
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update view with EXISTS and reference to the same view in subquery
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+explain select * from v1 where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update v1
+set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1)
+where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+update v1
+set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1)
+where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
+affected rows: 2
+info: Rows matched: 2 Changed: 2 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+1->11 2 *
+NULL 3
+NULL 4
+2->12 5 *
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with IN predicand over the updated table in WHERE
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+explain select * from t1 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
+select c3 from t1;
+c3
+111
+112
+113
+114
+115
+116
+117
+118
+121
+122
+123
+124
+125
+126
+127
+128
+131
+132
+133
+134
+135
+136
+137
+138
+141
+142
+143
+144
+145
+146
+147
+148
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with a limit
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+explain select * from t1 limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2;
+affected rows: 2
+info: Rows matched: 2 Changed: 2 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+1->1 1
+1->2 2 *
+NULL 3
+NULL 4
+NULL 5
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with a limit and an order by
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+explain select * from t1 order by c3 desc limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using filesort
+explain update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using filesort
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 2;
+affected rows: 2
+info: Rows matched: 2 Changed: 2 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+NULL 2
+NULL 3
+NULL 4
+NULL 5
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+32->37 37 *
+32->38 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#######################################
+# Test with an index #
+#######################################
+create index t1_c2 on t1 (c2,c1);
+analyze table t1;
+Table Op Msg_type Msg_text
+test.t1 analyze status Operation failed
+#
+# Update with value from subquery on the same table
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Operation failed
+explain select * from t1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+1->1 1
+1->2 2 *
+1->3 3 *
+2->4 4 *
+2->5 5 *
+2->6 6 *
+2->7 7 *
+2->8 8 *
+11->11 11
+11->12 12 *
+11->13 13 *
+12->14 14 *
+12->15 15 *
+12->16 16 *
+12->17 17 *
+12->18 18 *
+21->21 21
+21->22 22 *
+21->23 23 *
+22->24 24 *
+22->25 25 *
+22->26 26 *
+22->27 27 *
+22->28 28 *
+31->31 31
+31->32 32 *
+31->33 33 *
+32->34 34 *
+32->35 35 *
+32->36 36 *
+32->37 37 *
+32->38 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with EXISTS subquery over the updated table
+# in WHERE + possibly sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Operation failed
+explain select * from t1 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update t1 set c1=10 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+update t1 set c1=10 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
+affected rows: 3
+info: Rows matched: 3 Changed: 3 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+1->10 1 *
+1->10 2 *
+1->10 3 *
+NULL 4
+NULL 5
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with EXISTS subquery over the updated table
+# in WHERE + non-sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Operation failed
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL t1_c2 NULL NULL NULL 32
+explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL t1_c2 NULL NULL NULL 32
+update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+affected rows: 20
+info: Rows matched: 20 Changed: 20 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+NULL 2
+1->11 3 *
+NULL 4
+NULL 5
+2->12 6 *
+2->12 7 *
+2->12 8 *
+NULL 11
+NULL 12
+11->21 13 *
+NULL 14
+NULL 15
+12->22 16 *
+12->22 17 *
+12->22 18 *
+NULL 21
+21->31 22 *
+21->31 23 *
+NULL 24
+22->32 25 *
+22->32 26 *
+22->32 27 *
+22->32 28 *
+NULL 31
+31->41 32 *
+31->41 33 *
+NULL 34
+32->42 35 *
+32->42 36 *
+32->42 37 *
+32->42 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with order by
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Operation failed
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where; Using filesort
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL t1_c2 NULL NULL NULL 32
+explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where; Using filesort
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL t1_c2 NULL NULL NULL 32
+update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+affected rows: 20
+info: Rows matched: 20 Changed: 20 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+NULL 2
+1->11 3 *
+NULL 4
+NULL 5
+2->12 6 *
+2->12 7 *
+2->12 8 *
+NULL 11
+NULL 12
+11->21 13 *
+NULL 14
+NULL 15
+12->22 16 *
+12->22 17 *
+12->22 18 *
+NULL 21
+21->31 22 *
+21->31 23 *
+NULL 24
+22->32 25 *
+22->32 26 *
+22->32 27 *
+22->32 28 *
+NULL 31
+31->41 32 *
+31->41 33 *
+NULL 34
+32->42 35 *
+32->42 36 *
+32->42 37 *
+32->42 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with a reference to view in subquery
+# in settable value
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Operation failed
+explain select * from t1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1 set c1=c1 +(select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 2
+update t1 set c1=c1 +(select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+1->3 1 *
+1->3 2 *
+1->3 3 *
+2->4 4 *
+2->4 5 *
+2->4 6 *
+2->4 7 *
+2->4 8 *
+11->13 11 *
+11->13 12 *
+11->13 13 *
+12->14 14 *
+12->14 15 *
+12->14 16 *
+12->14 17 *
+12->14 18 *
+21->23 21 *
+21->23 22 *
+21->23 23 *
+22->24 24 *
+22->24 25 *
+22->24 26 *
+22->24 27 *
+22->24 28 *
+31->33 31 *
+31->33 32 *
+31->33 33 *
+32->34 34 *
+32->34 35 *
+32->34 36 *
+32->34 37 *
+32->34 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update view
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Operation failed
+explain select * from v1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL t1_c2 NULL NULL NULL 32 Using where
+explain update v1 set c1=c1 + (select max(a.c2) from t1 a
+where a.c1 = v1.c1) +10 where c3 > 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+update v1 set c1=c1 + (select max(a.c2) from t1 a
+where a.c1 = v1.c1) +10 where c3 > 3;
+affected rows: 7
+info: Rows matched: 7 Changed: 7 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+NULL 2
+NULL 3
+NULL 4
+2->17 5 *
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+11->24 12 *
+NULL 13
+NULL 14
+12->27 15 *
+NULL 16
+NULL 17
+NULL 18
+21->35 21 *
+NULL 22
+NULL 23
+22->38 24 *
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+31->45 31 *
+NULL 32
+NULL 33
+32->48 34 *
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update view with reference to the same view in subquery
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Operation failed
+explain select * from v1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+1 PRIMARY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 2 FirstMatch(t1)
+explain update v1 set c1=c1 + 1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,func 2 Using where
+update v1 set c1=c1 + 1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+affected rows: 1
+info: Rows matched: 1 Changed: 1 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+1->2 2 *
+NULL 3
+NULL 4
+NULL 5
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update view with EXISTS and reference to the same view in subquery
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Operation failed
+explain select * from v1 where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update v1
+set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1)
+where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+3 DEPENDENT SUBQUERY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 2
+update v1
+set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1)
+where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
+affected rows: 2
+info: Rows matched: 2 Changed: 2 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+1->11 2 *
+NULL 3
+NULL 4
+2->12 5 *
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with IN predicand over the updated table in WHERE
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Operation failed
+explain select * from t1 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+1 PRIMARY a ref t1_c2 t1_c2 10 test.t1.c2,test.t1.c1 2 FirstMatch(t1)
+explain update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where
+1 PRIMARY a ref t1_c2 t1_c2 10 test.t1.c2,test.t1.c1 2 FirstMatch(t1)
+update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
+select c3 from t1;
+c3
+111
+112
+113
+114
+115
+116
+117
+118
+121
+122
+123
+124
+125
+126
+127
+128
+131
+132
+133
+134
+135
+136
+137
+138
+141
+142
+143
+144
+145
+146
+147
+148
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with a limit
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Operation failed
+explain select * from t1 limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2;
+affected rows: 2
+info: Rows matched: 2 Changed: 2 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+1->1 1
+1->2 2 *
+NULL 3
+NULL 4
+NULL 5
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with a limit and an order by
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Operation failed
+explain select * from t1 order by c3 desc limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using filesort
+explain update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using filesort
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 2;
+affected rows: 2
+info: Rows matched: 2 Changed: 2 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+NULL 2
+NULL 3
+NULL 4
+NULL 5
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+32->37 37 *
+32->38 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#######################################
+# Test with a primary key #
+#######################################
+drop index t1_c2 on t1;
+alter table t1 add primary key (c3);
+analyze table t1;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+#
+# Update with value from subquery on the same table
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+explain select * from t1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1
+update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+1->1 1
+1->2 2 *
+1->3 3 *
+2->4 4 *
+2->5 5 *
+2->6 6 *
+2->7 7 *
+2->8 8 *
+11->11 11
+11->12 12 *
+11->13 13 *
+12->14 14 *
+12->15 15 *
+12->16 16 *
+12->17 17 *
+12->18 18 *
+21->21 21
+21->22 22 *
+21->23 23 *
+22->24 24 *
+22->25 25 *
+22->26 26 *
+22->27 27 *
+22->28 28 *
+31->31 31
+31->32 32 *
+31->33 33 *
+32->34 34 *
+32->35 35 *
+32->36 36 *
+32->37 37 *
+32->38 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with EXISTS subquery over the updated table
+# in WHERE + possibly sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+explain select * from t1 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update t1 set c1=10 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+update t1 set c1=10 where c1 <2
+and exists (select 'X' from t1 a where a.c1 = t1.c1);
+affected rows: 3
+info: Rows matched: 3 Changed: 3 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+1->10 1 *
+1->10 2 *
+1->10 3 *
+NULL 4
+NULL 5
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with EXISTS subquery over the updated table
+# in WHERE + non-sargable condition
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
+explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
+update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+affected rows: 20
+info: Rows matched: 20 Changed: 20 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+NULL 2
+1->11 3 *
+NULL 4
+NULL 5
+2->12 6 *
+2->12 7 *
+2->12 8 *
+NULL 11
+NULL 12
+11->21 13 *
+NULL 14
+NULL 15
+12->22 16 *
+12->22 17 *
+12->22 18 *
+NULL 21
+21->31 22 *
+21->31 23 *
+NULL 24
+22->32 25 *
+22->32 26 *
+22->32 27 *
+22->32 28 *
+NULL 31
+31->41 32 *
+31->41 33 *
+NULL 34
+32->42 35 *
+32->42 36 *
+32->42 37 *
+32->42 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with order by
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
+explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort
+1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
+2 MATERIALIZED a ALL NULL NULL NULL NULL 32
+update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 order by c2;
+affected rows: 20
+info: Rows matched: 20 Changed: 20 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+NULL 2
+1->11 3 *
+NULL 4
+NULL 5
+2->12 6 *
+2->12 7 *
+2->12 8 *
+NULL 11
+NULL 12
+11->21 13 *
+NULL 14
+NULL 15
+12->22 16 *
+12->22 17 *
+12->22 18 *
+NULL 21
+21->31 22 *
+21->31 23 *
+NULL 24
+22->32 25 *
+22->32 26 *
+22->32 27 *
+22->32 28 *
+NULL 31
+31->41 32 *
+31->41 33 *
+NULL 34
+32->42 35 *
+32->42 36 *
+32->42 37 *
+32->42 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with a reference to view in subquery
+# in settable value
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+explain select * from t1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1 set c1=c1 +(select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+update t1 set c1=c1 +(select max(a.c2) from v1 a
+where a.c1 = t1.c1);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+1->3 1 *
+1->3 2 *
+1->3 3 *
+2->4 4 *
+2->4 5 *
+2->4 6 *
+2->4 7 *
+2->4 8 *
+11->13 11 *
+11->13 12 *
+11->13 13 *
+12->14 14 *
+12->14 15 *
+12->14 16 *
+12->14 17 *
+12->14 18 *
+21->23 21 *
+21->23 22 *
+21->23 23 *
+22->24 24 *
+22->24 25 *
+22->24 26 *
+22->24 27 *
+22->24 28 *
+31->33 31 *
+31->33 32 *
+31->33 33 *
+32->34 34 *
+32->34 35 *
+32->34 36 *
+32->34 37 *
+32->34 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update view
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+explain select * from v1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using where
+explain update v1 set c1=c1 + (select max(a.c2) from t1 a
+where a.c1 = v1.c1) +10 where c3 > 3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL PRIMARY NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where
+update v1 set c1=c1 + (select max(a.c2) from t1 a
+where a.c1 = v1.c1) +10 where c3 > 3;
+affected rows: 7
+info: Rows matched: 7 Changed: 7 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+NULL 2
+NULL 3
+NULL 4
+2->17 5 *
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+11->24 12 *
+NULL 13
+NULL 14
+12->27 15 *
+NULL 16
+NULL 17
+NULL 18
+21->35 21 *
+NULL 22
+NULL 23
+22->38 24 *
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+31->45 31 *
+NULL 32
+NULL 33
+32->48 34 *
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update view with reference to the same view in subquery
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+explain select * from v1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update v1 set c1=c1 + 1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+update v1 set c1=c1 + 1 where c1 <2
+and exists (select 'X' from v1 a where a.c1 = v1.c1);
+affected rows: 1
+info: Rows matched: 1 Changed: 1 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+1->2 2 *
+NULL 3
+NULL 4
+NULL 5
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update view with EXISTS and reference to the same view in subquery
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+explain select * from v1 where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update v1
+set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1)
+where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where
+3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where
+update v1
+set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1)
+where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2);
+affected rows: 2
+info: Rows matched: 2 Changed: 2 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+1->11 2 *
+NULL 3
+NULL 4
+2->12 5 *
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with IN predicand over the updated table in WHERE
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+explain select * from t1 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
+explain update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1)
+update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1);
+affected rows: 32
+info: Rows matched: 32 Changed: 32 Warnings: 0
+select c3 from t1;
+c3
+111
+112
+113
+114
+115
+116
+117
+118
+121
+122
+123
+124
+125
+126
+127
+128
+131
+132
+133
+134
+135
+136
+137
+138
+141
+142
+143
+144
+145
+146
+147
+148
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with a limit
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+explain select * from t1 limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32
+explain update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32
+2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1
+update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2;
+affected rows: 2
+info: Rows matched: 2 Changed: 2 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+1->1 1
+1->2 2 *
+NULL 3
+NULL 4
+NULL 5
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+NULL 37
+NULL 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Update with a limit and an order by
+#
+analyze table t1 persistent for all;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze note The storage engine for the table doesn't support analyze
+explain select * from t1 order by c3 desc limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using filesort
+explain update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using filesort
+2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1
+update t1
+set c1=(select a.c3 from t1 a where a.c3 = t1.c3)
+order by c3 desc limit 2;
+affected rows: 2
+info: Rows matched: 2 Changed: 2 Warnings: 0
+select concat(old_c1,'->',c1),c3,
+case when c1 != old_c1 then '*' else ' ' end "Changed" from t1;
+concat(old_c1,'->',c1) c3 Changed
+NULL 1
+NULL 2
+NULL 3
+NULL 4
+NULL 5
+NULL 6
+NULL 7
+NULL 8
+NULL 11
+NULL 12
+NULL 13
+NULL 14
+NULL 15
+NULL 16
+NULL 17
+NULL 18
+NULL 21
+NULL 22
+NULL 23
+NULL 24
+NULL 25
+NULL 26
+NULL 27
+NULL 28
+NULL 31
+NULL 32
+NULL 33
+NULL 34
+NULL 35
+NULL 36
+32->37 37 *
+32->38 38 *
+truncate table t1;
+insert into t1 select * from tmp;
+# Update with error "Subquery returns more than 1 row"
+update t1 set c2=(select c2 from t1);
+ERROR 21000: Subquery returns more than 1 row
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+# Update with error "Subquery returns more than 1 row"
+# and order by
+update t1 set c2=(select c2 from t1) order by c3;
+ERROR 21000: Subquery returns more than 1 row
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+# Duplicate value on update a primary key
+update t1 set c3=0
+where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+ERROR 23000: Duplicate entry '0' for key 'PRIMARY'
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 0
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+# Duplicate value on update a primary key with ignore
+update ignore t1 set c3=0
+where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
+affected rows: 20
+info: Rows matched: 20 Changed: 20 Warnings: 0
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 0
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+# Duplicate value on update a primary key and limit
+update t1 set c3=0
+where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 limit 2;
+ERROR 23000: Duplicate entry '0' for key 'PRIMARY'
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 0
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+# Duplicate value on update a primary key with ignore
+# and limit
+update ignore t1 set c3=0
+where exists (select 'X' from t1 a where a.c2 = t1.c2)
+and c2 >= 3 limit 2;
+affected rows: 2
+info: Rows matched: 2 Changed: 2 Warnings: 0
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 0
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+# Update no rows found
+update t1 set c1=10
+where c1 <2 and exists (select 'X' from t1 a where a.c1 = t1.c1 + 10);
+affected rows: 3
+info: Rows matched: 3 Changed: 3 Warnings: 0
+select c1,c2,c3 from t1;
+c1 c2 c3
+10 1 1
+10 2 2
+10 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+# Update no rows changed
+drop trigger trg_t1;
+update t1 set c1=c1
+where c1 <2 and exists (select 'X' from t1 a where a.c1 = t1.c1);
+affected rows: 0
+info: Rows matched: 3 Changed: 0 Warnings: 0
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Check call of after trigger
+#
+create or replace trigger trg_t2 after update on t1 for each row
+begin
+declare msg varchar(100);
+if (new.c3 = 5) then
+set msg=concat('in after update trigger on ',new.c3);
+SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = msg;
+end if;
+end;
+/
+update t1 set c1=2
+where c3 in (select distinct a.c3 from t1 a where a.c1=t1.c1);
+ERROR 45000: in after update trigger on 5
+select c1,c2,c3 from t1;
+c1 c2 c3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 1
+2 1 4
+2 2 2
+2 2 5
+2 3 3
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+#
+# Check update with order by and after trigger
+#
+update t1 set c1=2
+where c3 in (select distinct a.c3 from t1 a where a.c1=t1.c1)
+order by t1.c2, t1.c1;
+ERROR 45000: in after update trigger on 5
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 3 3
+11 2 12
+11 3 13
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 1
+2 1 11
+2 1 14
+2 1 4
+2 2 2
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+drop view v1;
+#
+# Check update on view with check option
+#
+create view v1 as select * from t1 where c2=2 with check option;
+update v1 set c2=3 where c1=1;
+ERROR 44000: CHECK OPTION failed `test`.`v1`
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+update v1 set c2=(select max(c3) from v1) where c1=1;
+ERROR 44000: CHECK OPTION failed `test`.`v1`
+select c1,c2,c3 from t1;
+c1 c2 c3
+1 1 1
+1 2 2
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+update v1 set c2=(select min(va.c3) from v1 va), c1=0 where c1=1;
+select c1,c2,c3 from t1;
+c1 c2 c3
+0 2 2
+1 1 1
+1 3 3
+11 1 11
+11 2 12
+11 3 13
+12 1 14
+12 2 15
+12 3 16
+12 4 17
+12 5 18
+2 1 4
+2 2 5
+2 3 6
+2 4 7
+2 5 8
+21 2 21
+21 3 22
+21 4 23
+22 2 24
+22 3 25
+22 4 26
+22 5 27
+22 6 28
+31 2 31
+31 3 32
+31 4 33
+32 2 34
+32 3 35
+32 4 36
+32 5 37
+32 6 38
+truncate table t1;
+insert into t1 select * from tmp;
+drop table tmp;
+drop view v1;
+drop table t1;
+set @@default_storage_engine=@save_default_engine;
#
# Test with MyISAM
#
-create table t1 (old_c1 integer, old_c2 integer,c1 integer, c2 integer, c3 integer) engine=MyISAM;
+create table t1 (old_c1 integer,
+old_c2 integer,
+c1 integer,
+c2 integer,
+c3 integer) engine=MyISAM;
insert t1 (c1,c2,c3) select 0,seq,seq%10 from seq_1_to_500;
insert t1 (c1,c2,c3) select 1,seq,seq%10 from seq_1_to_400;
insert t1 (c1,c2,c3) select 2,seq,seq%10 from seq_1_to_300;
@@ -1189,11 +10134,13 @@ count(*)
140
drop table t1;
#
-# Test error on multi_update conversion on view with order by or limit
+# Test error on multi_update conversion on view
+# with order by or limit
#
create table t1 (c1 integer) engine=InnoDb;
create table t2 (c1 integer) engine=InnoDb;
-create view v1 as select t1.c1 as "t1c1" ,t2.c1 as "t2c1" from t1,t2 where t1.c1=t2.c1;
+create view v1 as select t1.c1 as "t1c1" ,t2.c1 as "t2c1"
+ from t1,t2 where t1.c1=t2.c1;
update v1 set t1c1=2 order by 1;
update v1 set t1c1=2 limit 1;
drop table t1;
diff --git a/mysql-test/main/update_use_source.test b/mysql-test/main/update_use_source.test
index 3c32a2541b0..ec27fa4d03c 100644
--- a/mysql-test/main/update_use_source.test
+++ b/mysql-test/main/update_use_source.test
@@ -2,221 +2,55 @@
--source include/have_innodb.inc
--source include/no_valgrind_without_big.inc
-create table t1 (old_c1 integer, old_c2 integer,c1 integer, c2 integer, c3 integer) engine=InnoDB STATS_PERSISTENT=0;
-create view v1 as select * from t1 where c2=2;
-delimiter /;
-create trigger trg_t1 before update on t1 for each row
-begin
- set new.old_c1=old.c1;
- set new.old_c2=old.c2;
-end;
-/
-delimiter ;/
-
-insert into t1(c1,c2,c3) values (1,1,1);
-insert into t1(c1,c2,c3) values (1,2,2);
-insert into t1(c1,c2,c3) values (1,3,3);
-insert into t1(c1,c2,c3) values (2,1,4);
-insert into t1(c1,c2,c3) values (2,2,5);
-insert into t1(c1,c2,c3) values (2,3,6);
-insert into t1(c1,c2,c3) values (2,4,7);
-insert into t1(c1,c2,c3) values (2,5,8);
-
-commit;
-select * from t1;
-
---echo Test without any index
+set @save_default_engine=@@default_storage_engine;
+
+--echo #######################################
+--echo # #
+--echo # Engine InnoDB #
+--echo # #
+--echo #######################################
+set global innodb_stats_persistent=1;
+set default_storage_engine=InnoDB;
--source include/update_use_source.inc
-
---echo Test with an index on updated columns
-create index t1_c2 on t1 (c2,c1);
+--source include/update_use_source_ext.inc
+
+--echo #######################################
+--echo # #
+--echo # Engine Aria #
+--echo # #
+--echo #######################################
+set default_storage_engine=Aria;
--source include/update_use_source.inc
-
---echo Test with an index on updated columns
-create index t1_c3 on t1 (c3);
+--source include/update_use_source_ext.inc
+
+--echo #######################################
+--echo # #
+--echo # Engine MyISAM #
+--echo # #
+--echo #######################################
+set default_storage_engine=MyISAM;
--source include/update_use_source.inc
-
---echo Test with a primary key on updated columns
-drop index t1_c3 on t1;
-alter table t1 add primary key (c3);
+--source include/update_use_source_ext.inc
+
+--echo #######################################
+--echo # #
+--echo # Engine MEMORY #
+--echo # #
+--echo #######################################
+set default_storage_engine=MEMORY;
--source include/update_use_source.inc
---echo # Update with error "Subquery returns more than 1 row"
---error ER_SUBQUERY_NO_1_ROW
-update t1 set c2=(select c2 from t1);
-
---echo # Update with error "Subquery returns more than 1 row" and order by
---error ER_SUBQUERY_NO_1_ROW
-update t1 set c2=(select c2 from t1) order by c3;
-
--- echo Duplicate value on update a primary key
-start transaction;
---error ER_DUP_ENTRY
-update t1 set c3=0 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
-rollback;
-
--- echo Duplicate value on update a primary key with ignore
-start transaction;
---enable_info ONCE
-update ignore t1 set c3=0 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
-rollback;
-
--- echo Duplicate value on update a primary key and limit
-start transaction;
---error ER_DUP_ENTRY
-update t1 set c3=0 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3 limit 2;
-rollback;
-
--- echo Duplicate value on update a primary key with ignore and limit
-start transaction;
---enable_info ONCE
-update ignore t1 set c3=0 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3 limit 2;
-rollback;
-
---echo # Update no rows found
---enable_info ONCE
-update t1
- set c1=10
- where c1 <2
- and exists (select 'X'
- from t1 a
- where a.c1 = t1.c1 + 10);
-
---echo # Update no rows changed
-drop trigger trg_t1;
-start transaction;
---enable_info ONCE
-update t1
- set c1=c1
- where c1 <2
- and exists (select 'X'
- from t1 a
- where a.c1 = t1.c1);
-rollback;
-
---echo #
---echo # Check call of after trigger
---echo #
-
-delimiter /;
-create or replace trigger trg_t2 after update on t1 for each row
-begin
- declare msg varchar(100);
- if (new.c3 = 5) then
- set msg=concat('in after update trigger on ',new.c3);
- SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = msg;
- end if;
-end;
-/
-delimiter ;/
---error 1644
-update t1 set c1=2 where c3 in (select distinct a.c3 from t1 a where a.c1=t1.c1);
-
---echo #
---echo # Check update with order by and after trigger
---echo #
-
---error 1644
-update t1 set c1=2 where c3 in (select distinct a.c3 from t1 a where a.c1=t1.c1) order by t1.c2;
-
-drop view v1;
---echo #
---echo # Check update on view with check option
---echo #
-
-create view v1 as select * from t1 where c2=2 with check option;
-
-start transaction;
--- error 1369
-update v1 set c2=3 where c1=1;
-rollback;
-
-start transaction;
--- error 1369
-update v1 set c2=(select max(c3) from v1) where c1=1;
-rollback;
-
-start transaction;
-update v1 set c2=(select min(va.c3) from v1 va), c1=0 where c1=1;
-rollback;
-
-drop view v1;
-drop table t1;
-
---echo #
---echo # Test with a temporary table
---echo #
-
-create temporary table t1 (c1 integer, c2 integer, c3 integer) engine=InnoDb;
-insert into t1(c1,c2,c3) values (1,1,1);
-insert into t1(c1,c2,c3) values (1,2,2);
-insert into t1(c1,c2,c3) values (1,3,3);
-insert into t1(c1,c2,c3) values (2,1,4);
-insert into t1(c1,c2,c3) values (2,2,5);
-insert into t1(c1,c2,c3) values (2,3,6);
-insert into t1(c1,c2,c3) values (2,4,7);
-insert into t1(c1,c2,c3) values (2,5,8);
-
-start transaction;
---enable_info ONCE
-update t1
- set c1=(select a.c2
- from t1 a
- where a.c3 = t1.c3) limit 3;
-select * from t1 ;
-rollback;
-drop table t1;
-
---echo #
---echo # Test on dynamic columns (blob)
---echo #
-
-create table assets (
- item_name varchar(32) primary key, -- A common attribute for all items
- dynamic_cols blob -- Dynamic columns will be stored here
-);
-INSERT INTO assets VALUES ('MariaDB T-shirt', COLUMN_CREATE('color', 'blue', 'size', 'XL'));
-INSERT INTO assets VALUES ('Thinkpad Laptop', COLUMN_CREATE('color', 'black', 'price', 500));
-SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color FROM assets;
-UPDATE assets SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty', '3 years') WHERE item_name='Thinkpad Laptop';
-SELECT item_name, COLUMN_GET(dynamic_cols, 'warranty' as char) AS color FROM assets;
-UPDATE assets SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty', '4 years')
- WHERE item_name in (select b.item_name
- from assets b
- where COLUMN_GET(b.dynamic_cols, 'color' as char) ='black');
-SELECT item_name, COLUMN_GET(dynamic_cols, 'warranty' as char) AS color FROM assets;
-
-UPDATE assets SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty', (select COLUMN_GET(b.dynamic_cols, 'color' as char)
- from assets b
- where assets.item_name = item_name));
-SELECT item_name, COLUMN_GET(dynamic_cols, 'warranty' as char) AS color FROM assets;
-drop table assets ;
-
---echo #
---echo # Test on fulltext columns
---echo #
-CREATE TABLE ft2(copy TEXT,FULLTEXT(copy)) ENGINE=MyISAM;
-INSERT INTO ft2(copy) VALUES
- ('MySQL vs MariaDB database'),
- ('Oracle vs MariaDB database'),
- ('PostgreSQL vs MariaDB database'),
- ('MariaDB overview'),
- ('Foreign keys'),
- ('Primary keys'),
- ('Indexes'),
- ('Transactions'),
- ('Triggers');
-SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('database');
-update ft2 set copy = (select max(concat('mykeyword ',substr(b.copy,1,5))) from ft2 b WHERE MATCH(b.copy) AGAINST('database'))
- where MATCH(copy) AGAINST('keys');
-SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('mykeyword');
-drop table ft2;
+set @@default_storage_engine=@save_default_engine;
--echo #
--echo # Test with MyISAM
--echo #
-create table t1 (old_c1 integer, old_c2 integer,c1 integer, c2 integer, c3 integer) engine=MyISAM;
+create table t1 (old_c1 integer,
+ old_c2 integer,
+ c1 integer,
+ c2 integer,
+ c3 integer) engine=MyISAM;
insert t1 (c1,c2,c3) select 0,seq,seq%10 from seq_1_to_500;
insert t1 (c1,c2,c3) select 1,seq,seq%10 from seq_1_to_400;
insert t1 (c1,c2,c3) select 2,seq,seq%10 from seq_1_to_300;
@@ -232,12 +66,14 @@ drop table t1;
--echo #
---echo # Test error on multi_update conversion on view with order by or limit
+--echo # Test error on multi_update conversion on view
+--echo # with order by or limit
--echo #
create table t1 (c1 integer) engine=InnoDb;
create table t2 (c1 integer) engine=InnoDb;
-create view v1 as select t1.c1 as "t1c1" ,t2.c1 as "t2c1" from t1,t2 where t1.c1=t2.c1;
+create view v1 as select t1.c1 as "t1c1" ,t2.c1 as "t2c1"
+ from t1,t2 where t1.c1=t2.c1;
# 'order by 1' should be considered as in 'select * from v1 order 1'
update v1 set t1c1=2 order by 1;
update v1 set t1c1=2 limit 1;
diff --git a/mysql-test/suite/json/r/json_table.result b/mysql-test/suite/json/r/json_table.result
index 900348d8a13..ed385f86a31 100644
--- a/mysql-test/suite/json/r/json_table.result
+++ b/mysql-test/suite/json/r/json_table.result
@@ -1146,3 +1146,104 @@ ERROR 42000: You have an error in your SQL syntax; check the manual that corresp
#
# End of 10.9 tests
#
+#
+# MDEV-29390: Improve coverage for UPDATE and DELETE statements in MTR test suites
+#
+# Multi-update with JSON_TABLE
+create table t1 ( name varchar(10),
+color varchar(10),
+price decimal(8,2),
+instock BOOLEAN);
+insert into t1 values ("Laptop", "black", 20000, 1);
+insert into t1 values ("Jacket", "brown", 5000, 1);
+insert into t1 values ("Jeans", "blue", 5000, 1);
+select * from t1;
+name color price instock
+Laptop black 20000.00 1
+Jacket brown 5000.00 1
+Jeans blue 5000.00 1
+set @json='
+[
+ {"name":"Laptop", "color":"black", "price":"1000", "ordered":"3"},
+ {"name":"Jeans", "color":"blue", "ordered":"0"},
+ {"name":"Phone", "color":"red", "ordered":"0"}
+]';
+select * from json_table(@json, '$[*]'
+columns(
+name varchar(10) path '$.name',
+color varchar(10) path '$.color',
+price decimal(8,2) path '$.price',
+ordered boolean path '$.ordered' )
+) as jt;
+name color price ordered
+Laptop black 1000.00 3
+Jeans blue NULL 0
+Phone red NULL 0
+explain update t1, JSON_TABLE(@json,'$[*]'
+COLUMNS (
+name varchar(10) path '$.name',
+color varchar(10) path '$.color',
+price decimal(8,2) path '$.price',
+ordered boolean path '$.ordered'
+ )) AS jt1
+SET t1.instock=0 where t1.name=jt1.name and jt1.ordered=3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 3
+1 SIMPLE jt1 ALL NULL NULL NULL NULL 40 Table function: json_table; Using where
+update t1, JSON_TABLE(@json,'$[*]'
+COLUMNS (
+name varchar(10) path '$.name',
+color varchar(10) path '$.color',
+price decimal(8,2) path '$.price',
+ordered boolean path '$.ordered'
+ )) AS jt1
+SET t1.instock=0 where t1.name=jt1.name and jt1.ordered=2;
+select * from t1;
+name color price instock
+Laptop black 20000.00 1
+Jacket brown 5000.00 1
+Jeans blue 5000.00 1
+explain update t1
+SET t1.instock=2 where t1.name in (
+select jt1.name from json_table(@json, '$[*]'
+columns(
+name varchar(10) path '$.name',
+color varchar(10) path '$.color',
+price decimal(8,2) path '$.price',
+ordered boolean path '$.ordered' )
+) as jt1);
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 ALL NULL NULL NULL NULL 3
+1 PRIMARY jt1 ALL NULL NULL NULL NULL 40 Table function: json_table; Using where; FirstMatch(t1)
+update t1
+SET t1.instock=2 where t1.name in (
+select jt1.name from json_table(@json, '$[*]'
+columns(
+name varchar(10) path '$.name',
+color varchar(10) path '$.color',
+price decimal(8,2) path '$.price',
+ordered boolean path '$.ordered' )
+) as jt1);
+select * from t1;
+name color price instock
+Laptop black 20000.00 2
+Jacket brown 5000.00 1
+Jeans blue 5000.00 2
+update t1, JSON_TABLE(@json,'$[*]'
+COLUMNS (
+name varchar(10) path '$.name',
+color varchar(10) path '$.color',
+price decimal(8,2) path '$.price',
+ordered boolean path '$.ordered'
+ )) AS jt1
+SET t1.instock=0, jt1.ordered=1 where t1.name=jt1.name;
+ERROR HY000: The target table jt1 of the UPDATE is not updatable
+select * from t1;
+name color price instock
+Laptop black 20000.00 2
+Jacket brown 5000.00 1
+Jeans blue 5000.00 2
+drop table t1;
+#
+# End of 11.0 tests
+#
diff --git a/mysql-test/suite/json/t/json_table.test b/mysql-test/suite/json/t/json_table.test
index 982922ff595..5a8fe984c79 100644
--- a/mysql-test/suite/json/t/json_table.test
+++ b/mysql-test/suite/json/t/json_table.test
@@ -997,3 +997,97 @@ COLUMNS
--echo #
--echo # End of 10.9 tests
--echo #
+
+--echo #
+--echo # MDEV-29390: Improve coverage for UPDATE and DELETE statements in MTR test suites
+--echo #
+
+--echo # Multi-update with JSON_TABLE
+
+create table t1 ( name varchar(10),
+ color varchar(10),
+ price decimal(8,2),
+ instock BOOLEAN);
+
+insert into t1 values ("Laptop", "black", 20000, 1);
+insert into t1 values ("Jacket", "brown", 5000, 1);
+insert into t1 values ("Jeans", "blue", 5000, 1);
+
+select * from t1;
+
+set @json='
+[
+ {"name":"Laptop", "color":"black", "price":"1000", "ordered":"3"},
+ {"name":"Jeans", "color":"blue", "ordered":"0"},
+ {"name":"Phone", "color":"red", "ordered":"0"}
+]';
+
+select * from json_table(@json, '$[*]'
+ columns(
+ name varchar(10) path '$.name',
+ color varchar(10) path '$.color',
+ price decimal(8,2) path '$.price',
+ ordered boolean path '$.ordered' )
+) as jt;
+
+explain update t1, JSON_TABLE(@json,'$[*]'
+ COLUMNS (
+ name varchar(10) path '$.name',
+ color varchar(10) path '$.color',
+ price decimal(8,2) path '$.price',
+ ordered boolean path '$.ordered'
+ )) AS jt1
+ SET t1.instock=0 where t1.name=jt1.name and jt1.ordered=3;
+
+update t1, JSON_TABLE(@json,'$[*]'
+ COLUMNS (
+ name varchar(10) path '$.name',
+ color varchar(10) path '$.color',
+ price decimal(8,2) path '$.price',
+ ordered boolean path '$.ordered'
+ )) AS jt1
+ SET t1.instock=0 where t1.name=jt1.name and jt1.ordered=2;
+
+select * from t1;
+
+explain update t1
+ SET t1.instock=2 where t1.name in (
+ select jt1.name from json_table(@json, '$[*]'
+ columns(
+ name varchar(10) path '$.name',
+ color varchar(10) path '$.color',
+ price decimal(8,2) path '$.price',
+ ordered boolean path '$.ordered' )
+ ) as jt1);
+
+
+update t1
+ SET t1.instock=2 where t1.name in (
+ select jt1.name from json_table(@json, '$[*]'
+ columns(
+ name varchar(10) path '$.name',
+ color varchar(10) path '$.color',
+ price decimal(8,2) path '$.price',
+ ordered boolean path '$.ordered' )
+ ) as jt1);
+
+select * from t1;
+
+
+-- error ER_NON_UPDATABLE_TABLE
+update t1, JSON_TABLE(@json,'$[*]'
+ COLUMNS (
+ name varchar(10) path '$.name',
+ color varchar(10) path '$.color',
+ price decimal(8,2) path '$.price',
+ ordered boolean path '$.ordered'
+ )) AS jt1
+ SET t1.instock=0, jt1.ordered=1 where t1.name=jt1.name;
+
+select * from t1;
+
+drop table t1;
+
+--echo #
+--echo # End of 11.0 tests
+--echo #