summaryrefslogtreecommitdiff
path: root/mysql-test/suite/merge
diff options
context:
space:
mode:
Diffstat (limited to 'mysql-test/suite/merge')
-rw-r--r--mysql-test/suite/merge/alter_table.result22
-rw-r--r--mysql-test/suite/merge/alter_table.test12
-rw-r--r--mysql-test/suite/merge/merge.result3989
-rw-r--r--mysql-test/suite/merge/merge.test2944
-rw-r--r--mysql-test/suite/merge/merge_debug.result27
-rw-r--r--mysql-test/suite/merge/merge_debug.test46
-rw-r--r--mysql-test/suite/merge/merge_innodb.result70
-rw-r--r--mysql-test/suite/merge/merge_innodb.test72
-rw-r--r--mysql-test/suite/merge/merge_mmap-master.opt1
-rw-r--r--mysql-test/suite/merge/merge_mmap.result190
-rw-r--r--mysql-test/suite/merge/merge_mmap.test153
11 files changed, 7526 insertions, 0 deletions
diff --git a/mysql-test/suite/merge/alter_table.result b/mysql-test/suite/merge/alter_table.result
new file mode 100644
index 00000000000..5adf610e5c0
--- /dev/null
+++ b/mysql-test/suite/merge/alter_table.result
@@ -0,0 +1,22 @@
+#
+# BUG#6236 - ALTER TABLE MODIFY should set implicit NOT NULL on PK columns
+#
+create table t1 ( a varchar(10) not null primary key ) engine=myisam;
+create table t2 ( a varchar(10) not null primary key ) engine=merge union=(t1);
+flush tables;
+alter table t1 modify a varchar(10);
+show create table t2;
+Table Create Table
+t2 CREATE TABLE `t2` (
+ `a` varchar(10) NOT NULL,
+ PRIMARY KEY (`a`)
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci UNION=(`t1`)
+flush tables;
+alter table t1 modify a varchar(10) not null;
+show create table t2;
+Table Create Table
+t2 CREATE TABLE `t2` (
+ `a` varchar(10) NOT NULL,
+ PRIMARY KEY (`a`)
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci UNION=(`t1`)
+drop table if exists t1, t2;
diff --git a/mysql-test/suite/merge/alter_table.test b/mysql-test/suite/merge/alter_table.test
new file mode 100644
index 00000000000..da56772bf60
--- /dev/null
+++ b/mysql-test/suite/merge/alter_table.test
@@ -0,0 +1,12 @@
+--echo #
+--echo # BUG#6236 - ALTER TABLE MODIFY should set implicit NOT NULL on PK columns
+--echo #
+create table t1 ( a varchar(10) not null primary key ) engine=myisam;
+create table t2 ( a varchar(10) not null primary key ) engine=merge union=(t1);
+flush tables;
+alter table t1 modify a varchar(10);
+show create table t2;
+flush tables;
+alter table t1 modify a varchar(10) not null;
+show create table t2;
+drop table if exists t1, t2;
diff --git a/mysql-test/suite/merge/merge.result b/mysql-test/suite/merge/merge.result
new file mode 100644
index 00000000000..d0df8334949
--- /dev/null
+++ b/mysql-test/suite/merge/merge.result
@@ -0,0 +1,3989 @@
+set @save_default_storage_engine=@@global.default_storage_engine;
+set global default_storage_engine=myisam;
+set session default_storage_engine=myisam;
+create table t1 (a int not null primary key auto_increment, message char(20));
+create table t2 (a int not null primary key auto_increment, message char(20));
+INSERT INTO t1 (message) VALUES ("Testing"),("table"),("t1");
+INSERT INTO t2 (message) VALUES ("Testing"),("table"),("t2");
+create table t3 (a int not null, b char(20), key(a)) engine=MERGE UNION=(t1,t2);
+select * from t3;
+a b
+1 Testing
+2 table
+3 t1
+1 Testing
+2 table
+3 t2
+select * from t3 order by a desc;
+a b
+3 t1
+3 t2
+2 table
+2 table
+1 Testing
+1 Testing
+drop table t3;
+insert into t1 select NULL,message from t2;
+insert into t2 select NULL,message from t1;
+insert into t1 select NULL,message from t2;
+insert into t2 select NULL,message from t1;
+insert into t1 select NULL,message from t2;
+insert into t2 select NULL,message from t1;
+insert into t1 select NULL,message from t2;
+insert into t2 select NULL,message from t1;
+insert into t1 select NULL,message from t2;
+insert into t2 select NULL,message from t1;
+insert into t1 select NULL,message from t2;
+create table t3 (a int not null, b char(20), key(a)) engine=MERGE UNION=(test.t1,test.t2);
+explain select * from t3 where a < 10;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t3 range a a 4 NULL 17 Using where
+explain select * from t3 where a > 10 and a < 20;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t3 range a a 4 NULL 17 Using where
+select * from t3 where a = 10;
+a b
+10 Testing
+10 Testing
+select * from t3 where a < 10;
+a b
+1 Testing
+1 Testing
+2 table
+2 table
+3 t1
+3 t2
+4 Testing
+4 Testing
+5 table
+5 table
+6 t2
+6 t1
+7 Testing
+7 Testing
+8 table
+8 table
+9 t2
+9 t2
+select * from t3 where a > 10 and a < 20;
+a b
+11 table
+11 table
+12 t1
+12 t1
+13 Testing
+13 Testing
+14 table
+14 table
+15 t2
+15 t2
+16 Testing
+16 Testing
+17 table
+17 table
+18 t2
+18 t2
+19 Testing
+19 Testing
+explain select a from t3 order by a desc limit 10;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t3 index NULL a 4 NULL 10 Using index
+select a from t3 order by a desc limit 10;
+a
+699
+698
+697
+696
+695
+694
+693
+692
+691
+690
+select a from t3 order by a desc limit 300,10;
+a
+416
+415
+415
+414
+414
+413
+413
+412
+412
+411
+delete from t3 where a=3;
+select * from t3 where a < 10;
+a b
+1 Testing
+1 Testing
+2 table
+2 table
+4 Testing
+4 Testing
+5 table
+5 table
+6 t2
+6 t1
+7 Testing
+7 Testing
+8 table
+8 table
+9 t2
+9 t2
+delete from t3 where a >= 6 and a <= 8;
+select * from t3 where a < 10;
+a b
+1 Testing
+1 Testing
+2 table
+2 table
+4 Testing
+4 Testing
+5 table
+5 table
+9 t2
+9 t2
+update t3 set a=3 where a=9;
+select * from t3 where a < 10;
+a b
+1 Testing
+1 Testing
+2 table
+2 table
+3 t2
+3 t2
+4 Testing
+4 Testing
+5 table
+5 table
+update t3 set a=6 where a=7;
+select * from t3 where a < 10;
+a b
+1 Testing
+1 Testing
+2 table
+2 table
+3 t2
+3 t2
+4 Testing
+4 Testing
+5 table
+5 table
+show create table t3;
+Table Create Table
+t3 CREATE TABLE `t3` (
+ `a` int(11) NOT NULL,
+ `b` char(20) DEFAULT NULL,
+ KEY `a` (`a`)
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci UNION=(`t1`,`t2`)
+create table t4 (a int not null, b char(10), key(a)) engine=MERGE UNION=(t1,t2);
+select * from t4;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+alter table t4 add column c int;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+flush tables;
+select * from t4;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+create database mysqltest;
+create table mysqltest.t6 (a int not null primary key auto_increment, message char(20));
+create table t5 (a int not null, b char(20), key(a)) engine=MERGE UNION=(test.t1,mysqltest.t6);
+show create table t5;
+Table Create Table
+t5 CREATE TABLE `t5` (
+ `a` int(11) NOT NULL,
+ `b` char(20) DEFAULT NULL,
+ KEY `a` (`a`)
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci UNION=(`t1`,`mysqltest`.`t6`)
+alter table t5 engine=myisam;
+drop table t5, mysqltest.t6;
+drop database mysqltest;
+drop table t4,t3,t1,t2;
+create table t1 (c char(10)) engine=myisam;
+create table t2 (c char(10)) engine=myisam;
+create table t3 (c char(10)) union=(t1,t2) engine=merge;
+insert into t1 (c) values ('test1');
+insert into t1 (c) values ('test1');
+insert into t1 (c) values ('test1');
+insert into t2 (c) values ('test2');
+insert into t2 (c) values ('test2');
+insert into t2 (c) values ('test2');
+select * from t3;
+c
+test1
+test1
+test1
+test2
+test2
+test2
+select * from t3;
+c
+test1
+test1
+test1
+test2
+test2
+test2
+delete from t3 where 1=1;
+select * from t3;
+c
+select * from t1;
+c
+drop table t3,t2,t1;
+CREATE TABLE t1 (incr int not null, othr int not null, primary key(incr));
+CREATE TABLE t2 (incr int not null, othr int not null, primary key(incr));
+CREATE TABLE t3 (incr int not null, othr int not null, primary key(incr))
+ENGINE=MERGE UNION=(t1,t2);
+SELECT * from t3;
+incr othr
+INSERT INTO t1 VALUES ( 1,10),( 3,53),( 5,21),( 7,12),( 9,17);
+INSERT INTO t2 VALUES ( 2,24),( 4,33),( 6,41),( 8,26),( 0,32);
+INSERT INTO t1 VALUES (11,20),(13,43),(15,11),(17,22),(19,37);
+INSERT INTO t2 VALUES (12,25),(14,31),(16,42),(18,27),(10,30);
+SELECT * from t3 where incr in (1,2,3,4) order by othr;
+incr othr
+1 10
+2 24
+4 33
+3 53
+alter table t3 UNION=(t1);
+select count(*) from t3;
+count(*)
+10
+alter table t3 UNION=(t1,t2);
+select count(*) from t3;
+count(*)
+20
+alter table t3 ENGINE=MYISAM;
+select count(*) from t3;
+count(*)
+20
+drop table t3;
+CREATE TABLE t3 (incr int not null, othr int not null, primary key(incr))
+ENGINE=MERGE UNION=(t1,t2);
+show create table t3;
+Table Create Table
+t3 CREATE TABLE `t3` (
+ `incr` int(11) NOT NULL,
+ `othr` int(11) NOT NULL,
+ PRIMARY KEY (`incr`)
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci UNION=(`t1`,`t2`)
+alter table t3 drop primary key;
+show create table t3;
+Table Create Table
+t3 CREATE TABLE `t3` (
+ `incr` int(11) NOT NULL,
+ `othr` int(11) NOT NULL
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci UNION=(`t1`,`t2`)
+drop table t3,t2,t1;
+create table t1 (a int not null, key(a)) engine=merge;
+select * from t1;
+a
+drop table t1;
+create table t1 (a int not null, b int not null, key(a,b));
+create table t2 (a int not null, b int not null, key(a,b));
+create table t3 (a int not null, b int not null, key(a,b)) ENGINE=MERGE UNION=(t1,t2);
+insert into t1 values (1,2),(2,1),(0,0),(4,4),(5,5),(6,6);
+insert into t2 values (1,1),(2,2),(0,0),(4,4),(5,5),(6,6);
+flush tables;
+select * from t3 where a=1 order by b limit 2;
+a b
+1 1
+1 2
+drop table t3,t1,t2;
+create table t1 (a int not null, b int not null auto_increment, primary key(a,b));
+create table t2 (a int not null, b int not null auto_increment, primary key(a,b));
+create table t3 (a int not null, b int not null, key(a,b)) UNION=(t1,t2) INSERT_METHOD=NO;
+create table t4 (a int not null, b int not null, key(a,b)) ENGINE=MERGE UNION=(t1,t2) INSERT_METHOD=NO;
+create table t5 (a int not null, b int not null auto_increment, primary key(a,b)) ENGINE=MERGE UNION=(t1,t2) INSERT_METHOD=FIRST;
+create table t6 (a int not null, b int not null auto_increment, primary key(a,b)) ENGINE=MERGE UNION=(t1,t2) INSERT_METHOD=LAST;
+show create table t3;
+Table Create Table
+t3 CREATE TABLE `t3` (
+ `a` int(11) NOT NULL,
+ `b` int(11) NOT NULL,
+ KEY `a` (`a`,`b`)
+) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
+show create table t4;
+Table Create Table
+t4 CREATE TABLE `t4` (
+ `a` int(11) NOT NULL,
+ `b` int(11) NOT NULL,
+ KEY `a` (`a`,`b`)
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci UNION=(`t1`,`t2`)
+show create table t5;
+Table Create Table
+t5 CREATE TABLE `t5` (
+ `a` int(11) NOT NULL,
+ `b` int(11) NOT NULL AUTO_INCREMENT,
+ PRIMARY KEY (`a`,`b`)
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci INSERT_METHOD=FIRST UNION=(`t1`,`t2`)
+show create table t6;
+Table Create Table
+t6 CREATE TABLE `t6` (
+ `a` int(11) NOT NULL,
+ `b` int(11) NOT NULL AUTO_INCREMENT,
+ PRIMARY KEY (`a`,`b`)
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci INSERT_METHOD=LAST UNION=(`t1`,`t2`)
+insert into t1 values (1,NULL),(1,NULL),(1,NULL),(1,NULL);
+insert into t2 values (2,NULL),(2,NULL),(2,NULL),(2,NULL);
+select * from t3 order by b,a limit 3;
+a b
+select * from t4 order by b,a limit 3;
+a b
+1 1
+2 1
+1 2
+select * from t5 order by b,a limit 3,3;
+a b
+2 2
+1 3
+2 3
+select * from t6 order by b,a limit 6,3;
+a b
+1 4
+2 4
+insert into t5 values (5,1),(5,2);
+insert into t6 values (6,1),(6,2);
+select * from t1 order by a,b;
+a b
+1 1
+1 2
+1 3
+1 4
+5 1
+5 2
+select * from t2 order by a,b;
+a b
+2 1
+2 2
+2 3
+2 4
+6 1
+6 2
+select * from t4 order by a,b;
+a b
+1 1
+1 2
+1 3
+1 4
+2 1
+2 2
+2 3
+2 4
+5 1
+5 2
+6 1
+6 2
+insert into t3 values (3,1),(3,2),(3,3),(3,4);
+select * from t3 order by a,b;
+a b
+3 1
+3 2
+3 3
+3 4
+alter table t4 UNION=(t1,t2,t3);
+show create table t4;
+Table Create Table
+t4 CREATE TABLE `t4` (
+ `a` int(11) NOT NULL,
+ `b` int(11) NOT NULL,
+ KEY `a` (`a`,`b`)
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci UNION=(`t1`,`t2`,`t3`)
+select * from t4 order by a,b;
+a b
+1 1
+1 2
+1 3
+1 4
+2 1
+2 2
+2 3
+2 4
+3 1
+3 2
+3 3
+3 4
+5 1
+5 2
+6 1
+6 2
+alter table t4 INSERT_METHOD=FIRST;
+show create table t4;
+Table Create Table
+t4 CREATE TABLE `t4` (
+ `a` int(11) NOT NULL,
+ `b` int(11) NOT NULL,
+ KEY `a` (`a`,`b`)
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci INSERT_METHOD=FIRST UNION=(`t1`,`t2`,`t3`)
+insert into t4 values (4,1),(4,2);
+select * from t1 order by a,b;
+a b
+1 1
+1 2
+1 3
+1 4
+4 1
+4 2
+5 1
+5 2
+select * from t2 order by a,b;
+a b
+2 1
+2 2
+2 3
+2 4
+6 1
+6 2
+select * from t3 order by a,b;
+a b
+3 1
+3 2
+3 3
+3 4
+select * from t4 order by a,b;
+a b
+1 1
+1 2
+1 3
+1 4
+2 1
+2 2
+2 3
+2 4
+3 1
+3 2
+3 3
+3 4
+4 1
+4 2
+5 1
+5 2
+6 1
+6 2
+select * from t5 order by a,b;
+a b
+1 1
+1 2
+1 3
+1 4
+2 1
+2 2
+2 3
+2 4
+4 1
+4 2
+5 1
+5 2
+6 1
+6 2
+select 1;
+1
+1
+insert into t5 values (1,NULL),(5,NULL);
+insert into t6 values (2,NULL),(6,NULL);
+select * from t1 order by a,b;
+a b
+1 1
+1 2
+1 3
+1 4
+1 5
+4 1
+4 2
+5 1
+5 2
+5 3
+select * from t2 order by a,b;
+a b
+2 1
+2 2
+2 3
+2 4
+2 5
+6 1
+6 2
+6 3
+select * from t5 order by a,b;
+a b
+1 1
+1 2
+1 3
+1 4
+1 5
+2 1
+2 2
+2 3
+2 4
+2 5
+4 1
+4 2
+5 1
+5 2
+5 3
+6 1
+6 2
+6 3
+select * from t6 order by a,b;
+a b
+1 1
+1 2
+1 3
+1 4
+1 5
+2 1
+2 2
+2 3
+2 4
+2 5
+4 1
+4 2
+5 1
+5 2
+5 3
+6 1
+6 2
+6 3
+insert into t1 values (99,NULL);
+select * from t4 where a+0 > 90;
+a b
+99 1
+insert t5 values (1,1);
+ERROR 23000: Duplicate entry '1-1' for key 'PRIMARY'
+insert t6 values (2,1);
+ERROR 23000: Duplicate entry '2-1' for key 'PRIMARY'
+insert t5 values (1,1) on duplicate key update b=b+10;
+insert t6 values (2,1) on duplicate key update b=b+20;
+select * from t5 where a < 3;
+a b
+1 2
+1 3
+1 4
+1 5
+1 11
+2 2
+2 3
+2 4
+2 5
+2 21
+drop table t6, t5, t4, t3, t2, t1;
+CREATE TABLE t1 ( a int(11) NOT NULL default '0', b int(11) NOT NULL default '0', PRIMARY KEY (a,b)) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1,1), (2,1);
+CREATE TABLE t2 ( a int(11) NOT NULL default '0', b int(11) NOT NULL default '0', PRIMARY KEY (a,b)) ENGINE=MyISAM;
+INSERT INTO t2 VALUES (1,2), (2,2);
+CREATE TABLE t3 ( a int(11) NOT NULL default '0', b int(11) NOT NULL default '0', KEY a (a,b)) ENGINE=MRG_MyISAM UNION=(t1,t2);
+select max(b) from t3 where a = 2;
+max(b)
+2
+select max(b) from t1 where a = 2;
+max(b)
+1
+drop table t3,t1,t2;
+create table t1 (a int not null);
+create table t2 (a int not null);
+insert into t1 values (1);
+insert into t2 values (2);
+create temporary table t3 (a int not null) ENGINE=MERGE UNION=(t1,t2);
+select * from t3;
+a
+1
+2
+create temporary table t4 (a int not null);
+create temporary table t5 (a int not null);
+insert into t4 values (1);
+insert into t5 values (2);
+create temporary table t6 (a int not null) ENGINE=MERGE UNION=(t4,t5);
+select * from t6;
+a
+1
+2
+drop table t6, t3, t1, t2, t4, t5;
+create temporary table t1 (a int not null);
+create temporary table t2 (a int not null);
+insert into t1 values (1);
+insert into t2 values (2);
+create table t3 (a int not null) ENGINE=MERGE UNION=(t1,t2);
+select * from t3;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+drop table t3, t2, t1;
+create table t1 (a int not null);
+create temporary table t2 (a int not null);
+insert into t1 values (1);
+insert into t2 values (2);
+create table t3 (a int not null) ENGINE=MERGE UNION=(t1,t2);
+select * from t3;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+drop table t3;
+create temporary table t3 (a int not null) ENGINE=MERGE UNION=(t1,t2);
+select * from t3;
+a
+1
+2
+drop table t3, t2, t1;
+# CREATE...SELECT is not implemented for MERGE tables.
+CREATE TEMPORARY TABLE t1 (c1 INT NOT NULL);
+CREATE TEMPORARY TABLE t2 (c1 INT NOT NULL);
+CREATE TABLE t3 (c1 INT NOT NULL);
+INSERT INTO t3 VALUES (3), (33);
+LOCK TABLES t3 READ;
+CREATE TEMPORARY TABLE t4 (c1 INT NOT NULL) ENGINE=MERGE UNION=(t1,t2)
+INSERT_METHOD=LAST SELECT * FROM t3;
+ERROR HY000: 'test.t4' is not of type 'BASE TABLE'
+SELECT * FROM t4;
+ERROR HY000: Table 't4' was not locked with LOCK TABLES
+UNLOCK TABLES;
+CREATE TEMPORARY TABLE t4 (c1 INT NOT NULL) ENGINE=MERGE UNION=(t1,t2)
+INSERT_METHOD=LAST;
+INSERT INTO t4 SELECT * FROM t3;
+# Alter temporary MERGE table.
+ALTER TABLE t4 UNION=(t1);
+LOCK TABLES t4 WRITE;
+# Alter temporary MERGE table under LOCk tables.
+ALTER TABLE t4 UNION=(t1,t2);
+UNLOCK TABLES;
+# MERGE table and function.
+CREATE FUNCTION f1 () RETURNS INT RETURN (SELECT max(c1) FROM t3);
+SELECT * FROM t4 WHERE c1 < f1();
+c1
+3
+DROP FUNCTION f1;
+DROP TABLE t4, t3, t2, t1;
+CREATE TABLE t1 (
+fileset_id tinyint(3) unsigned NOT NULL default '0',
+file_code varchar(32) NOT NULL default '',
+fileset_root_id tinyint(3) unsigned NOT NULL default '0',
+PRIMARY KEY (fileset_id,file_code),
+KEY files (fileset_id,fileset_root_id)
+) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (2, '0000000111', 1), (2, '0000000112', 1), (2, '0000000113', 1),
+(2, '0000000114', 1), (2, '0000000115', 1), (2, '0000000116', 1), (2, '0000000117', 1),
+(2, '0000000118', 1), (2, '0000000119', 1), (2, '0000000120', 1);
+CREATE TABLE t2 (
+fileset_id tinyint(3) unsigned NOT NULL default '0',
+file_code varchar(32) NOT NULL default '',
+fileset_root_id tinyint(3) unsigned NOT NULL default '0',
+PRIMARY KEY (fileset_id,file_code),
+KEY files (fileset_id,fileset_root_id)
+) ENGINE=MRG_MyISAM UNION=(t1);
+EXPLAIN SELECT * FROM t2 IGNORE INDEX (files) WHERE fileset_id = 2
+AND file_code BETWEEN '0000000115' AND '0000000120' LIMIT 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t2 range PRIMARY PRIMARY 35 NULL 6 Using where
+EXPLAIN SELECT * FROM t2 WHERE fileset_id = 2
+AND file_code BETWEEN '0000000115' AND '0000000120' LIMIT 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t2 range PRIMARY,files PRIMARY 35 NULL 6 Using where
+EXPLAIN SELECT * FROM t1 WHERE fileset_id = 2
+AND file_code BETWEEN '0000000115' AND '0000000120' LIMIT 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 range PRIMARY,files PRIMARY 35 NULL 6 Using index condition
+EXPLAIN SELECT * FROM t2 WHERE fileset_id = 2
+AND file_code = '0000000115' LIMIT 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t2 const PRIMARY,files PRIMARY 35 const,const 1
+DROP TABLE t2, t1;
+create table t1 (x int, y int, index xy(x, y));
+create table t2 (x int, y int, index xy(x, y));
+create table t3 (x int, y int, index xy(x, y)) engine=merge union=(t1,t2);
+insert into t1 values(1, 2);
+insert into t2 values(1, 3);
+select * from t3 where x = 1 and y < 5 order by y;
+x y
+1 2
+1 3
+select * from t3 where x = 1 and y < 5 order by y desc;
+x y
+1 3
+1 2
+drop table t1,t2,t3;
+create table t1 (a int);
+create table t2 (a int);
+insert into t1 values (0);
+insert into t2 values (1);
+create table t3 engine=merge union=(t1, t2) select * from t1;
+ERROR HY000: 'test.t3' is not of type 'BASE TABLE'
+create table t3 engine=merge union=(t1, t2) select * from t2;
+ERROR HY000: 'test.t3' is not of type 'BASE TABLE'
+create table t3 engine=merge union=(t1, t2) select (select max(a) from t2);
+ERROR HY000: 'test.t3' is not of type 'BASE TABLE'
+drop table t1, t2;
+create table t1 (
+a double(14,4),
+b varchar(10),
+index (a,b)
+) engine=merge union=(t2,t3);
+create table t2 (
+a double(14,4),
+b varchar(10),
+index (a,b)
+) engine=myisam;
+create table t3 (
+a double(14,4),
+b varchar(10),
+index (a,b)
+) engine=myisam;
+insert into t2 values ( null, '');
+insert into t2 values ( 9999999999.999, '');
+insert into t3 select * from t2;
+select min(a), max(a) from t1;
+min(a) max(a)
+9999999999.9990 9999999999.9990
+flush tables;
+select min(a), max(a) from t1;
+min(a) max(a)
+9999999999.9990 9999999999.9990
+drop table t1, t2, t3;
+create table t1 (a int,b int,c int, index (a,b,c));
+create table t2 (a int,b int,c int, index (a,b,c));
+create table t3 (a int,b int,c int, index (a,b,c))
+engine=merge union=(t1 ,t2);
+insert into t1 (a,b,c) values (1,1,0),(1,2,0);
+insert into t2 (a,b,c) values (1,1,1),(1,2,1);
+explain select a,b,c from t3 force index (a) where a=1 order by a,b,c;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t3 ref a a 5 const 4 Using where; Using index
+select a,b,c from t3 force index (a) where a=1 order by a,b,c;
+a b c
+1 1 0
+1 1 1
+1 2 0
+1 2 1
+explain select a,b,c from t3 force index (a) where a=1 order by a desc, b desc, c desc;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t3 ref a a 5 const 4 Using where; Using index
+select a,b,c from t3 force index (a) where a=1 order by a desc, b desc, c desc;
+a b c
+1 2 1
+1 2 0
+1 1 1
+1 1 0
+show index from t3;
+Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment Ignored
+t3 1 a 1 a A NULL NULL NULL YES BTREE NO
+t3 1 a 2 b A NULL NULL NULL YES BTREE NO
+t3 1 a 3 c A NULL NULL NULL YES BTREE NO
+drop table t1, t2, t3;
+CREATE TABLE t1 ( a INT AUTO_INCREMENT PRIMARY KEY, b VARCHAR(10), UNIQUE (b) )
+ENGINE=MyISAM;
+CREATE TABLE t2 ( a INT AUTO_INCREMENT, b VARCHAR(10), INDEX (a), INDEX (b) )
+ENGINE=MERGE UNION (t1) INSERT_METHOD=FIRST;
+INSERT INTO t2 (b) VALUES (1) ON DUPLICATE KEY UPDATE b=2;
+INSERT INTO t2 (b) VALUES (1) ON DUPLICATE KEY UPDATE b=3;
+SELECT b FROM t2;
+b
+3
+DROP TABLE t1, t2;
+create table t1(a int);
+create table t2(a int);
+insert into t1 values (1);
+insert into t2 values (2);
+create table t3 (a int) engine=merge union=(t1, t2) insert_method=first;
+select * from t3;
+a
+1
+2
+insert t2 select * from t2;
+select * from t2;
+a
+2
+2
+insert t3 select * from t1;
+select * from t3;
+a
+1
+1
+2
+2
+insert t1 select * from t3;
+select * from t1;
+a
+1
+1
+1
+1
+2
+2
+select * from t2;
+a
+2
+2
+select * from t3;
+a
+1
+1
+1
+1
+2
+2
+2
+2
+check table t1, t2;
+Table Op Msg_type Msg_text
+test.t1 check status OK
+test.t2 check status OK
+drop table t1, t2, t3;
+CREATE TABLE t1(a INT);
+INSERT INTO t1 VALUES(2),(1);
+CREATE TABLE t2(a INT, KEY(a)) ENGINE=MERGE UNION=(t1);
+SELECT * FROM t2 WHERE a=2;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+DROP TABLE t1, t2;
+CREATE TABLE t1(a INT) ENGINE=MEMORY;
+CREATE TABLE t2(a INT) ENGINE=MERGE UNION=(t1);
+SELECT * FROM t2;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+DROP TABLE t1, t2;
+CREATE TABLE t2(a INT) ENGINE=MERGE UNION=(t3);
+SELECT * FROM t2;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+DROP TABLE t2;
+CREATE TABLE t1(a INT, b TEXT);
+CREATE TABLE tm1(a TEXT, b INT) ENGINE=MERGE UNION=(t1);
+SELECT * FROM tm1;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+DROP TABLE t1, tm1;
+CREATE TABLE t1(a SMALLINT, b SMALLINT);
+CREATE TABLE tm1(a INT) ENGINE=MERGE UNION=(t1);
+SELECT * FROM tm1;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+DROP TABLE t1, tm1;
+CREATE TABLE t1(a SMALLINT, b SMALLINT, KEY(a, b));
+CREATE TABLE tm1(a SMALLINT, b SMALLINT, KEY(a)) ENGINE=MERGE UNION=(t1);
+SELECT * FROM tm1;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+DROP TABLE t1, tm1;
+CREATE TABLE t1(a SMALLINT, b SMALLINT, KEY(b));
+CREATE TABLE tm1(a SMALLINT, b SMALLINT, KEY(a)) ENGINE=MERGE UNION=(t1);
+SELECT * FROM tm1;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+DROP TABLE t1, tm1;
+CREATE TABLE t1(c1 VARCHAR(1));
+CREATE TABLE m1 LIKE t1;
+ALTER TABLE m1 ENGINE=MERGE UNION=(t1);
+SELECT * FROM m1;
+c1
+DROP TABLE t1, m1;
+CREATE TABLE t1(c1 VARCHAR(4), c2 TINYINT, c3 TINYINT, c4 TINYINT,
+c5 TINYINT, c6 TINYINT, c7 TINYINT, c8 TINYINT, c9 TINYINT);
+CREATE TABLE m1 LIKE t1;
+ALTER TABLE m1 ENGINE=MERGE UNION=(t1);
+SELECT * FROM m1;
+c1 c2 c3 c4 c5 c6 c7 c8 c9
+DROP TABLE t1, m1;
+CREATE TABLE t1 (a VARCHAR(255) CHARACTER SET latin1 COLLATE latin1_german2_ci,
+b INT, INDEX(a,b));
+CREATE TABLE t2 LIKE t1;
+CREATE TABLE t3 LIKE t1;
+ALTER TABLE t3 ENGINE=MERGE UNION=(t1,t2);
+INSERT INTO t1 VALUES ('ss',1);
+INSERT INTO t2 VALUES ('ss',2),(0xDF,2);
+SELECT COUNT(*) FROM t3 WHERE a=0xDF AND b=2;
+COUNT(*)
+2
+DROP TABLE t1,t2,t3;
+create table t1 (b bit(1));
+create table t2 (b bit(1));
+create table tm (b bit(1)) engine = merge union = (t1,t2);
+select * from tm;
+b
+drop table tm, t1, t2;
+create table t1 (a int) insert_method = last engine = merge;
+insert into t1 values (1);
+ERROR HY000: Table 't1' is read only
+create table t2 (a int) engine = myisam;
+alter table t1 union (t2);
+insert into t1 values (1);
+alter table t1 insert_method = no;
+insert into t1 values (1);
+ERROR HY000: Table 't1' is read only
+drop table t2;
+drop table t1;
+CREATE TABLE tm1(a INT) ENGINE=MERGE UNION=(t1, t2);
+SELECT * FROM tm1;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+CHECK TABLE tm1;
+Table Op Msg_type Msg_text
+test.tm1 check Error Table 'test.t1' is differently defined or of non-MyISAM type or doesn't exist
+test.tm1 check Error Table 'test.t2' is differently defined or of non-MyISAM type or doesn't exist
+test.tm1 check Error Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+test.tm1 check error Corrupt
+CREATE TABLE t1(a INT);
+SELECT * FROM tm1;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+CHECK TABLE tm1;
+Table Op Msg_type Msg_text
+test.tm1 check Error Table 'test.t2' is differently defined or of non-MyISAM type or doesn't exist
+test.tm1 check Error Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+test.tm1 check error Corrupt
+CREATE TABLE t2(a BLOB);
+SELECT * FROM tm1;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+CHECK TABLE tm1;
+Table Op Msg_type Msg_text
+test.tm1 check Error Table 'test.t2' is differently defined or of non-MyISAM type or doesn't exist
+test.tm1 check Error Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+test.tm1 check error Corrupt
+ALTER TABLE t2 MODIFY a INT;
+SELECT * FROM tm1;
+a
+CHECK TABLE tm1;
+Table Op Msg_type Msg_text
+test.tm1 check status OK
+DROP TABLE tm1, t1, t2;
+CREATE TABLE t1(c1 INT);
+CREATE TABLE t2 (c1 INT) ENGINE=MERGE UNION=(t1) INSERT_METHOD=FIRST;
+CREATE TABLE IF NOT EXISTS t1 SELECT * FROM t2;
+Warnings:
+Note 1050 Table 't1' already exists
+DROP TABLE t1, t2;
+CREATE TABLE t1 (id INT NOT NULL, ref INT NOT NULL, INDEX (id)) ENGINE=MyISAM;
+CREATE TABLE t2 LIKE t1;
+INSERT INTO t2 (id, ref) VALUES (1,3), (2,1), (3,2), (4,5), (4,4);
+INSERT INTO t1 SELECT * FROM t2;
+INSERT INTO t1 SELECT * FROM t2;
+CREATE TABLE t3 (id INT NOT NULL, ref INT NOT NULL, INDEX (id)) ENGINE=MERGE
+UNION(t1);
+SELECT * FROM t3 AS a INNER JOIN t3 AS b USING (id) WHERE a.ref < b.ref;
+id ref ref
+4 4 5
+4 4 5
+4 4 5
+4 4 5
+SELECT * FROM t3;
+id ref
+1 3
+2 1
+3 2
+4 5
+4 4
+1 3
+2 1
+3 2
+4 5
+4 4
+DELETE FROM a USING t3 AS a INNER JOIN t3 AS b USING (id) WHERE a.ref < b.ref;
+SELECT * FROM t3;
+id ref
+1 3
+2 1
+3 2
+4 5
+1 3
+2 1
+3 2
+4 5
+DROP TABLE t1, t2, t3;
+CREATE TABLE t1(a INT);
+CREATE TABLE m1(a INT) ENGINE=MERGE;
+SHOW CREATE TABLE m1;
+Table Create Table
+m1 CREATE TABLE `m1` (
+ `a` int(11) DEFAULT NULL
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
+DROP TABLE m1;
+CREATE TABLE m1(a INT) ENGINE=MERGE UNION=();
+SHOW CREATE TABLE m1;
+Table Create Table
+m1 CREATE TABLE `m1` (
+ `a` int(11) DEFAULT NULL
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
+ALTER TABLE m1 UNION=(t1);
+ALTER TABLE m1 UNION=();
+SHOW CREATE TABLE m1;
+Table Create Table
+m1 CREATE TABLE `m1` (
+ `a` int(11) DEFAULT NULL
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
+DROP TABLE t1, m1;
+CREATE TABLE t1(a INT);
+CREATE TABLE t2(a VARCHAR(10));
+CREATE TABLE m1(a INT) ENGINE=MERGE UNION=(t1, t2);
+CREATE TABLE m2(a INT) ENGINE=MERGE UNION=(t1);
+SELECT * FROM t1;
+a
+SELECT * FROM m1;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+SELECT * FROM m2;
+a
+DROP TABLE t1, t2, m1, m2;
+End of 5.0 tests
+create table t1 (c1 int, index(c1));
+create table t2 (c1 int, index(c1)) engine=merge union=(t1);
+insert into t1 values (1);
+flush tables;
+select * from t2;
+c1
+1
+flush tables;
+truncate table t1;
+insert into t1 values (1);
+flush tables;
+select * from t2;
+c1
+1
+truncate table t1;
+insert into t1 values (1);
+drop table t1,t2;
+#
+# Extra tests for TRUNCATE.
+#
+# Truncate MERGE table.
+CREATE TABLE t1 (c1 INT, INDEX(c1));
+CREATE TABLE t2 (c1 INT, INDEX(c1));
+CREATE TABLE t3 (c1 INT, INDEX(c1)) ENGINE=MRG_MYISAM UNION=(t1,t2);
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2);
+SELECT * FROM t3;
+c1
+1
+2
+TRUNCATE TABLE t3;
+SELECT * FROM t3;
+c1
+#
+# Truncate child table.
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2);
+TRUNCATE TABLE t1;
+SELECT * FROM t3;
+c1
+2
+#
+# Truncate MERGE table under locked tables.
+LOCK TABLE t1 WRITE, t2 WRITE, t3 WRITE;
+INSERT INTO t1 VALUES (1);
+TRUNCATE TABLE t3;
+SELECT * FROM t3;
+c1
+UNLOCK TABLES;
+SELECT * FROM t1;
+c1
+SELECT * FROM t2;
+c1
+#
+# Truncate child table under locked tables.
+LOCK TABLE t1 WRITE, t2 WRITE, t3 WRITE;
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2);
+TRUNCATE TABLE t1;
+SELECT * FROM t3;
+c1
+2
+UNLOCK TABLES;
+DROP TABLE t1, t2, t3;
+#
+# Truncate temporary MERGE table.
+CREATE TEMPORARY TABLE t1 (c1 INT, INDEX(c1));
+CREATE TEMPORARY TABLE t2 (c1 INT, INDEX(c1));
+CREATE TEMPORARY TABLE t3 (c1 INT, INDEX(c1)) ENGINE=MRG_MYISAM UNION=(t1,t2);
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2);
+SELECT * FROM t3;
+c1
+1
+2
+TRUNCATE TABLE t3;
+SELECT * FROM t3;
+c1
+#
+# Truncate temporary child table.
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2);
+TRUNCATE TABLE t1;
+SELECT * FROM t3;
+c1
+2
+#
+# Truncate temporary MERGE table under locked tables.
+INSERT INTO t1 VALUES (1);
+CREATE TABLE t4 (c1 INT, INDEX(c1));
+LOCK TABLE t4 WRITE;
+TRUNCATE TABLE t3;
+SELECT * FROM t3;
+c1
+SELECT * FROM t1;
+c1
+SELECT * FROM t2;
+c1
+#
+# Truncate temporary child table under locked tables.
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2);
+TRUNCATE TABLE t1;
+SELECT * FROM t3;
+c1
+2
+SELECT * FROM t1;
+c1
+SELECT * FROM t2;
+c1
+2
+UNLOCK TABLES;
+DROP TABLE t1, t2, t3, t4;
+connect con1,localhost,root,,;
+connect con2,localhost,root,,;
+connection default;
+CREATE TABLE t1 (c1 INT) ENGINE= MyISAM;
+CREATE TABLE t2 (c1 INT) ENGINE= MRG_MYISAM UNION= (t1) INSERT_METHOD= LAST;
+REPAIR TABLE t1;
+connection con1;
+INSERT INTO t2 VALUES (1);
+connection default;
+Table Op Msg_type Msg_text
+test.t1 repair status OK
+DROP TABLE t1, t2;
+CREATE TABLE t1 (c1 INT) ENGINE= MyISAM;
+CREATE TABLE t2 (c1 INT) ENGINE= MRG_MYISAM UNION= (t1) INSERT_METHOD= LAST;
+LOCK TABLE t1 WRITE;
+connection con1;
+INSERT INTO t2 VALUES (1);
+connection default;
+REPAIR TABLE t1;
+Table Op Msg_type Msg_text
+test.t1 repair status OK
+UNLOCK TABLES;
+connection con1;
+connection default;
+DROP TABLE t1, t2;
+CREATE TABLE t1 (c1 INT) ENGINE= MyISAM;
+LOCK TABLE t1 WRITE;
+connection con1;
+INSERT INTO t1 VALUES (1);
+connection default;
+FLUSH TABLES;
+FLUSH TABLES;
+SELECT * FROM t1;
+c1
+UNLOCK TABLES;
+connection con1;
+connection default;
+DROP TABLE t1;
+disconnect con1;
+disconnect con2;
+#
+# Extra tests for Bug#26379 - Combination of FLUSH TABLE and
+# REPAIR TABLE corrupts a MERGE table
+#
+# CREATE ... SELECT is disabled for MERGE tables.
+#
+CREATE TABLE t1(c1 INT);
+INSERT INTO t1 VALUES (1);
+CREATE TABLE t2 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1) INSERT_METHOD=LAST;
+CREATE TABLE t3 ENGINE=MRG_MYISAM INSERT_METHOD=LAST SELECT * FROM t2;
+ERROR HY000: Table 't3' is read only
+SHOW CREATE TABLE t3;
+ERROR 42S02: Table 'test.t3' doesn't exist
+CREATE TABLE t3 ENGINE=MRG_MYISAM UNION=(t1) INSERT_METHOD=LAST
+SELECT * FROM t2;
+ERROR HY000: 'test.t3' is not of type 'BASE TABLE'
+SHOW CREATE TABLE t3;
+ERROR 42S02: Table 'test.t3' doesn't exist
+DROP TABLE t1, t2;
+#
+# Bug#37371 "CREATE TABLE LIKE merge loses UNION parameter"
+# Demonstrate that this is no longer the case.
+#
+# 1. Create like.
+CREATE TABLE t1 (c1 INT);
+CREATE TABLE t2 (c1 INT);
+CREATE TABLE t3 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1,t2)
+INSERT_METHOD=LAST;
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2);
+INSERT INTO t3 VALUES (3);
+CREATE TABLE t4 LIKE t3;
+SHOW CREATE TABLE t4;
+Table Create Table
+t4 CREATE TABLE `t4` (
+ `c1` int(11) DEFAULT NULL
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci INSERT_METHOD=LAST UNION=(`t1`,`t2`)
+INSERT INTO t4 VALUES (4);
+DROP TABLE t4;
+#
+# 1. Create like with locked tables.
+LOCK TABLES t3 WRITE, t2 WRITE, t1 WRITE;
+CREATE TABLE t4 LIKE t3;
+ERROR HY000: Table 't4' was not locked with LOCK TABLES
+SHOW CREATE TABLE t4;
+ERROR HY000: Table 't4' was not locked with LOCK TABLES
+INSERT INTO t4 VALUES (4);
+ERROR HY000: Table 't4' was not locked with LOCK TABLES
+# Temporary tables can be created in spite of LOCK TABLES.
+# If the temporary MERGE table uses the locked children only,
+# it can even be used.
+CREATE TEMPORARY TABLE t4 LIKE t3;
+SHOW CREATE TABLE t4;
+Table Create Table
+t4 CREATE TEMPORARY TABLE `t4` (
+ `c1` int(11) DEFAULT NULL
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci INSERT_METHOD=LAST UNION=(`t1`,`t2`)
+INSERT INTO t4 VALUES (4);
+UNLOCK TABLES;
+INSERT INTO t4 VALUES (4);
+DROP TABLE t4;
+#
+# Rename child.
+#
+# 1. Normal rename of non-MERGE table.
+CREATE TABLE t4 (c1 INT);
+INSERT INTO t4 VALUES (4);
+SELECT * FROM t4 ORDER BY c1;
+c1
+4
+RENAME TABLE t4 TO t5;
+SELECT * FROM t5 ORDER BY c1;
+c1
+4
+RENAME TABLE t5 TO t4;
+SELECT * FROM t4 ORDER BY c1;
+c1
+4
+DROP TABLE t4;
+#
+# 2. Normal rename.
+SELECT * FROM t3 ORDER BY c1;
+c1
+1
+2
+3
+4
+4
+4
+RENAME TABLE t2 TO t5;
+SELECT * FROM t3 ORDER BY c1;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+RENAME TABLE t5 TO t2;
+SELECT * FROM t3 ORDER BY c1;
+c1
+1
+2
+3
+4
+4
+4
+#
+# 3. Normal rename with locked tables.
+LOCK TABLES t1 WRITE, t2 WRITE, t3 WRITE;
+SELECT * FROM t3 ORDER BY c1;
+c1
+1
+2
+3
+4
+4
+4
+RENAME TABLE t2 TO t5;
+ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
+SELECT * FROM t3 ORDER BY c1;
+c1
+1
+2
+3
+4
+4
+4
+RENAME TABLE t5 TO t2;
+ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
+SELECT * FROM t3 ORDER BY c1;
+c1
+1
+2
+3
+4
+4
+4
+UNLOCK TABLES;
+#
+# 4. Alter table rename.
+ALTER TABLE t2 RENAME TO t5;
+SELECT * FROM t3 ORDER BY c1;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+ALTER TABLE t5 RENAME TO t2;
+SELECT * FROM t3 ORDER BY c1;
+c1
+1
+2
+3
+4
+4
+4
+#
+# 5. Alter table rename with locked tables.
+LOCK TABLES t1 WRITE, t2 WRITE, t3 WRITE;
+ALTER TABLE t2 RENAME TO t5;
+SELECT * FROM t3 ORDER BY c1;
+ERROR HY000: Table 't2' was not locked with LOCK TABLES
+ALTER TABLE t5 RENAME TO t2;
+ERROR HY000: Table 't5' was not locked with LOCK TABLES
+UNLOCK TABLES;
+ALTER TABLE t5 RENAME TO t2;
+SELECT * FROM t3 ORDER BY c1;
+c1
+1
+2
+3
+4
+4
+4
+#
+# Rename parent.
+#
+# 1. Normal rename with locked tables.
+LOCK TABLES t1 WRITE, t2 WRITE, t3 WRITE;
+SELECT * FROM t3 ORDER BY c1;
+c1
+1
+2
+3
+4
+4
+4
+RENAME TABLE t3 TO t5;
+ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
+SELECT * FROM t3 ORDER BY c1;
+c1
+1
+2
+3
+4
+4
+4
+RENAME TABLE t5 TO t3;
+ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
+SELECT * FROM t3 ORDER BY c1;
+c1
+1
+2
+3
+4
+4
+4
+#
+# 5. Alter table rename with locked tables.
+ALTER TABLE t3 RENAME TO t5;
+SELECT * FROM t5 ORDER BY c1;
+ERROR HY000: Table 't5' was not locked with LOCK TABLES
+ALTER TABLE t5 RENAME TO t3;
+ERROR HY000: Table 't5' was not locked with LOCK TABLES
+UNLOCK TABLES;
+ALTER TABLE t5 RENAME TO t3;
+SELECT * FROM t3 ORDER BY c1;
+c1
+1
+2
+3
+4
+4
+4
+DROP TABLE t1, t2, t3;
+#
+# Drop locked tables.
+#
+# 1. Drop parent.
+CREATE TABLE t1 (c1 INT, INDEX(c1));
+CREATE TABLE t2 (c1 INT, INDEX(c1)) ENGINE=MRG_MYISAM UNION=(t1)
+INSERT_METHOD=LAST;
+LOCK TABLES t1 WRITE, t2 WRITE;
+INSERT INTO t1 VALUES (1);
+DROP TABLE t2;
+SELECT * FROM t2;
+ERROR HY000: Table 't2' was not locked with LOCK TABLES
+SELECT * FROM t1;
+c1
+1
+UNLOCK TABLES;
+# 2. Drop child.
+CREATE TABLE t2 (c1 INT, INDEX(c1)) ENGINE=MRG_MYISAM UNION=(t1)
+INSERT_METHOD=LAST;
+LOCK TABLES t1 WRITE, t2 WRITE;
+INSERT INTO t1 VALUES (1);
+DROP TABLE t1;
+SELECT * FROM t2;
+ERROR HY000: Table 't1' was not locked with LOCK TABLES
+SELECT * FROM t1;
+ERROR HY000: Table 't1' was not locked with LOCK TABLES
+UNLOCK TABLES;
+DROP TABLE t2;
+#
+# ALTER TABLE. Change child list.
+#
+CREATE TABLE t1 (c1 INT, INDEX(c1));
+CREATE TABLE t2 (c1 INT, INDEX(c1));
+CREATE TABLE t3 (c1 INT, INDEX(c1));
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2);
+INSERT INTO t3 VALUES (3);
+CREATE TABLE t4 (c1 INT, INDEX(c1)) ENGINE=MRG_MYISAM UNION=(t3,t2)
+INSERT_METHOD=LAST;
+# Shrink child list.
+ALTER TABLE t4 UNION=(t3);
+SHOW CREATE TABLE t4;
+Table Create Table
+t4 CREATE TABLE `t4` (
+ `c1` int(11) DEFAULT NULL,
+ KEY `c1` (`c1`)
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci INSERT_METHOD=LAST UNION=(`t3`)
+SELECT * FROM t4 ORDER BY c1;
+c1
+3
+# Extend child list.
+ALTER TABLE t4 UNION=(t3,t2);
+SHOW CREATE TABLE t4;
+Table Create Table
+t4 CREATE TABLE `t4` (
+ `c1` int(11) DEFAULT NULL,
+ KEY `c1` (`c1`)
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci INSERT_METHOD=LAST UNION=(`t3`,`t2`)
+SELECT * FROM t4 ORDER BY c1;
+c1
+2
+3
+#
+# ALTER TABLE under LOCK TABLES. Change child list.
+#
+LOCK TABLES t4 WRITE, t3 WRITE, t2 WRITE;
+# Shrink child list.
+ALTER TABLE t4 UNION=(t3);
+ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
+# Extend child list within locked tables.
+ALTER TABLE t4 UNION=(t3,t2);
+ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
+# Extend child list beyond locked tables.
+ALTER TABLE t4 UNION=(t3,t2,t1);
+ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
+SHOW CREATE TABLE t4;
+Table Create Table
+t4 CREATE TABLE `t4` (
+ `c1` int(11) DEFAULT NULL,
+ KEY `c1` (`c1`)
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci INSERT_METHOD=LAST UNION=(`t3`,`t2`)
+SELECT * FROM t4 ORDER BY c1;
+c1
+2
+3
+UNLOCK TABLES;
+DROP TABLE t4;
+#
+# ALTER TABLE under LOCK TABLES. Grave change, table re-creation.
+#
+CREATE TABLE t4 (c1 INT, INDEX(c1)) ENGINE=MRG_MYISAM UNION=(t1,t2,t3)
+INSERT_METHOD=LAST;
+# Lock parent first and then children.
+LOCK TABLES t4 WRITE, t3 WRITE, t2 WRITE, t1 WRITE;
+ALTER TABLE t4 DROP INDEX c1, ADD UNIQUE INDEX (c1);
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+ALTER TABLE t2 DROP INDEX c1, ADD UNIQUE INDEX (c1);
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+UNLOCK TABLES;
+# Lock children first and then parent.
+LOCK TABLES t1 WRITE, t2 WRITE, t3 WRITE, t4 WRITE;
+ALTER TABLE t4 DROP INDEX c1, ADD UNIQUE INDEX (c1);
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+ALTER TABLE t2 DROP INDEX c1, ADD UNIQUE INDEX (c1);
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+UNLOCK TABLES;
+# Lock parent between children.
+LOCK TABLES t3 WRITE, t2 WRITE, t4 WRITE, t1 WRITE;
+ALTER TABLE t4 DROP INDEX c1, ADD UNIQUE INDEX (c1);
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+ALTER TABLE t2 DROP INDEX c1, ADD UNIQUE INDEX (c1);
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+UNLOCK TABLES;
+DROP TABLE t1, t2, t3, t4;
+#
+# ALTER TABLE under LOCK TABLES. Simple change, no re-creation.
+#
+CREATE TABLE t1 (c1 INT);
+CREATE TABLE t2 (c1 INT);
+CREATE TABLE t3 (c1 INT);
+CREATE TABLE t4 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1,t2,t3)
+INSERT_METHOD=LAST;
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2);
+INSERT INTO t3 VALUES (3);
+# Lock parent first and then children.
+LOCK TABLES t4 WRITE, t3 WRITE, t2 WRITE, t1 WRITE;
+ALTER TABLE t4 ALTER COLUMN c1 SET DEFAULT 44;
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+ALTER TABLE t2 ALTER COLUMN c1 SET DEFAULT 22;
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+UNLOCK TABLES;
+# Lock children first and then parent.
+LOCK TABLES t1 WRITE, t2 WRITE, t3 WRITE, t4 WRITE;
+ALTER TABLE t4 ALTER COLUMN c1 SET DEFAULT 44;
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+ALTER TABLE t2 ALTER COLUMN c1 SET DEFAULT 22;
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+UNLOCK TABLES;
+# Lock parent between children.
+LOCK TABLES t3 WRITE, t2 WRITE, t4 WRITE, t1 WRITE;
+ALTER TABLE t4 ALTER COLUMN c1 SET DEFAULT 44;
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+ALTER TABLE t2 ALTER COLUMN c1 SET DEFAULT 22;
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+UNLOCK TABLES;
+#
+# FLUSH TABLE under LOCK TABLES.
+#
+# Lock parent first and then children.
+LOCK TABLES t4 WRITE, t3 WRITE, t2 WRITE, t1 WRITE;
+FLUSH TABLE t4;
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+FLUSH TABLE t2;
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+FLUSH TABLES;
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+UNLOCK TABLES;
+# Lock children first and then parent.
+LOCK TABLES t1 WRITE, t2 WRITE, t3 WRITE, t4 WRITE;
+FLUSH TABLE t4;
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+FLUSH TABLE t2;
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+FLUSH TABLES;
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+UNLOCK TABLES;
+# Lock parent between children.
+LOCK TABLES t3 WRITE, t2 WRITE, t4 WRITE, t1 WRITE;
+FLUSH TABLE t4;
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+FLUSH TABLE t2;
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+FLUSH TABLES;
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+UNLOCK TABLES;
+#
+# Triggers
+#
+# Trigger on parent
+DELETE FROM t4 WHERE c1 = 4;
+CREATE TRIGGER t4_ai1 AFTER INSERT ON t4 FOR EACH ROW SET @a=1;
+SET @a=0;
+INSERT INTO t4 VALUES (4);
+SELECT @a;
+@a
+1
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+4
+DROP TRIGGER t4_ai1;
+CHECK TABLE t3;
+Table Op Msg_type Msg_text
+test.t3 check status OK
+# Trigger on parent under LOCK TABLES
+LOCK TABLES t3 WRITE, t2 WRITE, t4 WRITE, t1 WRITE;
+CREATE TRIGGER t4_ai2 AFTER INSERT ON t4 FOR EACH ROW SET @a=1;
+SET @a=0;
+INSERT INTO t4 VALUES (4);
+SELECT @a;
+@a
+1
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+4
+4
+DROP TRIGGER t4_ai2;
+UNLOCK TABLES;
+CHECK TABLE t3;
+Table Op Msg_type Msg_text
+test.t3 check status OK
+#
+# Trigger on child
+DELETE FROM t4 WHERE c1 = 4;
+CREATE TRIGGER t3_ai3 AFTER INSERT ON t3 FOR EACH ROW SET @a=1;
+SET @a=0;
+INSERT INTO t4 VALUES (4);
+SELECT @a;
+@a
+0
+INSERT INTO t3 VALUES (33);
+SELECT @a;
+@a
+1
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+4
+33
+DROP TRIGGER t3_ai3;
+CHECK TABLE t3;
+Table Op Msg_type Msg_text
+test.t3 check status OK
+# Trigger on child under LOCK TABLES
+LOCK TABLES t3 WRITE, t2 WRITE, t4 WRITE, t1 WRITE;
+CREATE TRIGGER t3_ai4 AFTER INSERT ON t3 FOR EACH ROW SET @a=1;
+SET @a=0;
+INSERT INTO t4 VALUES (4);
+SELECT @a;
+@a
+0
+INSERT INTO t3 VALUES (33);
+SELECT @a;
+@a
+1
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+4
+4
+33
+33
+DELETE FROM t4 WHERE c1 = 33;
+DROP TRIGGER t3_ai4;
+UNLOCK TABLES;
+CHECK TABLE t3;
+Table Op Msg_type Msg_text
+test.t3 check status OK
+#
+# Trigger with table use on child
+DELETE FROM t4 WHERE c1 = 4;
+CREATE TRIGGER t3_ai5 AFTER INSERT ON t3 FOR EACH ROW INSERT INTO t2 VALUES(22);
+SELECT COUNT(*) FROM t2;
+COUNT(*)
+1
+INSERT INTO t4 VALUES (4);
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+4
+INSERT INTO t3 VALUES (33);
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+4
+22
+33
+DELETE FROM t4 WHERE c1 = 22;
+DELETE FROM t4 WHERE c1 = 33;
+DROP TRIGGER t3_ai5;
+UNLOCK TABLES;
+CHECK TABLE t2,t3;
+Table Op Msg_type Msg_text
+test.t2 check status OK
+test.t3 check status OK
+# Trigger with table use on child under LOCK TABLES
+LOCK TABLES t3 WRITE, t2 WRITE, t4 WRITE, t1 WRITE;
+CREATE TRIGGER t3_ai6 AFTER INSERT ON t3 FOR EACH ROW INSERT INTO t2 VALUES(22);
+INSERT INTO t4 VALUES (4);
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+4
+4
+INSERT INTO t3 VALUES (33);
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+4
+4
+22
+33
+DROP TRIGGER t3_ai6;
+UNLOCK TABLES;
+check table t2,t3,t4;
+Table Op Msg_type Msg_text
+test.t2 check status OK
+test.t3 check status OK
+test.t4 check status OK
+DELETE FROM t4 WHERE c1 = 22;
+DELETE FROM t4 WHERE c1 = 33;
+# Trigger with table use on child under different LOCK TABLES
+DELETE FROM t4 WHERE c1 = 4;
+LOCK TABLES t4 WRITE,t3 WRITE, t2 WRITE, t1 WRITE;
+CREATE TRIGGER t3_ai7 AFTER INSERT ON t3 FOR EACH ROW INSERT INTO t2 VALUES(22);
+INSERT INTO t4 VALUES (4);
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+4
+INSERT INTO t3 VALUES (33);
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+4
+22
+33
+DROP TRIGGER t3_ai7;
+UNLOCK TABLES;
+check table t2,t3,t4;
+Table Op Msg_type Msg_text
+test.t2 check status OK
+test.t3 check status OK
+test.t4 check status OK
+DELETE FROM t4 WHERE c1 = 22;
+DELETE FROM t4 WHERE c1 = 33;
+#
+# Repair
+#
+REPAIR TABLE t4;
+Table Op Msg_type Msg_text
+test.t4 repair note The storage engine for the table doesn't support repair
+REPAIR TABLE t2;
+Table Op Msg_type Msg_text
+test.t2 repair status OK
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+4
+LOCK TABLES t3 WRITE, t2 WRITE, t4 WRITE, t1 WRITE;
+REPAIR TABLE t4;
+Table Op Msg_type Msg_text
+test.t4 repair note The storage engine for the table doesn't support repair
+REPAIR TABLE t2;
+Table Op Msg_type Msg_text
+test.t2 repair status OK
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+4
+UNLOCK TABLES;
+#
+# Optimize
+#
+OPTIMIZE TABLE t4;
+Table Op Msg_type Msg_text
+test.t4 optimize note The storage engine for the table doesn't support optimize
+OPTIMIZE TABLE t2;
+Table Op Msg_type Msg_text
+test.t2 optimize status OK
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+4
+LOCK TABLES t3 WRITE, t2 WRITE, t4 WRITE, t1 WRITE;
+OPTIMIZE TABLE t4;
+Table Op Msg_type Msg_text
+test.t4 optimize note The storage engine for the table doesn't support optimize
+OPTIMIZE TABLE t2;
+Table Op Msg_type Msg_text
+test.t2 optimize status Table is already up to date
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+4
+UNLOCK TABLES;
+#
+# Checksum
+#
+CHECKSUM TABLE t4;
+Table Checksum
+test.t4 149057747
+CHECKSUM TABLE t2;
+Table Checksum
+test.t2 3700403066
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+4
+LOCK TABLES t3 WRITE, t2 WRITE, t4 WRITE, t1 WRITE;
+CHECKSUM TABLE t4;
+Table Checksum
+test.t4 149057747
+CHECKSUM TABLE t2;
+Table Checksum
+test.t2 3700403066
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+4
+UNLOCK TABLES;
+#
+# Insert delayed
+#
+INSERT DELAYED INTO t4 VALUES(44);
+DELETE FROM t4 WHERE c1 = 44;
+INSERT DELAYED INTO t3 VALUES(33);
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+4
+33
+LOCK TABLES t3 WRITE, t2 WRITE, t4 WRITE, t1 WRITE;
+INSERT DELAYED INTO t4 VALUES(444);
+Got one of the listed errors
+INSERT DELAYED INTO t3 VALUES(333);
+Got one of the listed errors
+SELECT * FROM t4 ORDER BY c1;
+c1
+1
+2
+3
+4
+33
+UNLOCK TABLES;
+DROP TABLE t1, t2, t3, t4;
+#
+# Recursive inclusion of merge tables in their union clauses.
+#
+CREATE TABLE t1 (c1 INT, INDEX(c1));
+CREATE TABLE t2 (c1 INT, INDEX(c1)) ENGINE=MRG_MYISAM UNION=(t1)
+INSERT_METHOD=LAST;
+CREATE TABLE t3 (c1 INT, INDEX(c1)) ENGINE=MRG_MYISAM UNION=(t2,t1)
+INSERT_METHOD=LAST;
+ALTER TABLE t2 UNION=(t3,t1);
+SELECT * FROM t2;
+ERROR HY000: Table 't3' is differently defined or of non-MyISAM type or doesn't exist
+DROP TABLE t1, t2, t3;
+CREATE TABLE t1 (c1 INT) ENGINE= MyISAM;
+CREATE TABLE t2 (c1 INT) ENGINE= MyISAM;
+CREATE TABLE t3 (c1 INT) ENGINE= MRG_MYISAM UNION= (t1, t2);
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2);
+SELECT * FROM t3;
+c1
+1
+2
+TRUNCATE TABLE t1;
+SELECT * FROM t3;
+c1
+2
+DROP TABLE t1, t2, t3;
+CREATE TABLE t1 (id INTEGER, grp TINYINT, id_rev INTEGER);
+SET @rnd_max= 2147483647;
+set @@read_buffer_size=2*1024*1024;
+CREATE TABLE t2 SELECT * FROM t1;
+INSERT INTO t1 (id, grp, id_rev) SELECT id, grp, id_rev FROM t2;
+INSERT INTO t2 (id, grp, id_rev) SELECT id, grp, id_rev FROM t1;
+INSERT INTO t1 (id, grp, id_rev) SELECT id, grp, id_rev FROM t2;
+INSERT INTO t2 (id, grp, id_rev) SELECT id, grp, id_rev FROM t1;
+INSERT INTO t1 (id, grp, id_rev) SELECT id, grp, id_rev FROM t2;
+CREATE TABLE t3 (id INTEGER, grp TINYINT, id_rev INTEGER)
+ENGINE= MRG_MYISAM UNION= (t1, t2);
+SELECT COUNT(*) FROM t1;
+COUNT(*)
+130
+SELECT COUNT(*) FROM t2;
+COUNT(*)
+80
+SELECT COUNT(*) FROM t3;
+COUNT(*)
+210
+connect con1,localhost,root,,;
+SELECT COUNT(DISTINCT a1.id) FROM t3 AS a1, t3 AS a2
+WHERE a1.id = a2.id GROUP BY a2.grp;
+connection default;
+TRUNCATE TABLE t1;
+connection con1;
+disconnect con1;
+connection default;
+SELECT COUNT(*) FROM t1;
+COUNT(*)
+0
+SELECT COUNT(*) FROM t2;
+COUNT(*)
+80
+SELECT COUNT(*) FROM t3;
+COUNT(*)
+80
+DROP TABLE t1, t2, t3;
+CREATE TABLE t1 (c1 INT) ENGINE=MyISAM;
+CREATE TABLE t2 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1) INSERT_METHOD=LAST;
+INSERT INTO t2 VALUES (1);
+SELECT * FROM t2;
+c1
+1
+LOCK TABLES t2 WRITE, t1 WRITE;
+FLUSH TABLES;
+REPAIR TABLE t1;
+Table Op Msg_type Msg_text
+test.t1 repair status OK
+CHECK TABLE t1;
+Table Op Msg_type Msg_text
+test.t1 check status OK
+REPAIR TABLE t1;
+Table Op Msg_type Msg_text
+test.t1 repair status OK
+UNLOCK TABLES;
+CHECK TABLE t1 EXTENDED;
+Table Op Msg_type Msg_text
+test.t1 check status OK
+LOCK TABLES t2 WRITE, t1 WRITE;
+REPAIR TABLE t1;
+Table Op Msg_type Msg_text
+test.t1 repair status OK
+CHECK TABLE t1;
+Table Op Msg_type Msg_text
+test.t1 check status OK
+REPAIR TABLE t1;
+Table Op Msg_type Msg_text
+test.t1 repair status OK
+UNLOCK TABLES;
+CHECK TABLE t1 EXTENDED;
+Table Op Msg_type Msg_text
+test.t1 check status OK
+DROP TABLE t1, t2;
+CREATE TABLE t1 ( a INT ) ENGINE=MyISAM;
+CREATE TABLE m1 ( a INT ) ENGINE=MRG_MYISAM UNION=(t1);
+LOCK TABLES t1 WRITE, m1 WRITE;
+FLUSH TABLE t1;
+UNLOCK TABLES;
+DROP TABLE m1, t1;
+CREATE TABLE t1 ( a INT ) ENGINE=MyISAM;
+CREATE TABLE m1 ( a INT ) ENGINE=MRG_MYISAM UNION=(t1);
+LOCK TABLES m1 WRITE, t1 WRITE;
+FLUSH TABLE t1;
+UNLOCK TABLES;
+DROP TABLE m1, t1;
+CREATE TABLE t1 (c1 INT, c2 INT) ENGINE= MyISAM;
+CREATE TABLE t2 (c1 INT, c2 INT) ENGINE= MyISAM;
+CREATE TABLE t3 (c1 INT, c2 INT) ENGINE= MRG_MYISAM UNION(t1, t2);
+INSERT INTO t1 VALUES (1, 1);
+INSERT INTO t2 VALUES (2, 2);
+SELECT * FROM t3;
+c1 c2
+1 1
+2 2
+ALTER TABLE t1 ENGINE= MEMORY;
+INSERT INTO t1 VALUES (0, 0);
+SELECT * FROM t3;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+DROP TABLE t1, t2, t3;
+CREATE TABLE t1 (c1 INT, KEY(c1));
+CREATE TABLE t2 (c1 INT, KEY(c1)) ENGINE=MRG_MYISAM UNION=(t1)
+INSERT_METHOD=FIRST;
+LOCK TABLE t1 WRITE, t2 WRITE;
+FLUSH TABLES t2, t1;
+OPTIMIZE TABLE t1;
+Table Op Msg_type Msg_text
+test.t1 optimize status Table is already up to date
+FLUSH TABLES t1;
+UNLOCK TABLES;
+FLUSH TABLES;
+INSERT INTO t1 VALUES (1);
+LOCK TABLE t1 WRITE, t2 WRITE;
+FLUSH TABLES t2, t1;
+OPTIMIZE TABLE t1;
+Table Op Msg_type Msg_text
+test.t1 optimize status OK
+FLUSH TABLES t1;
+UNLOCK TABLES;
+DROP TABLE t1, t2;
+CREATE TABLE t1 (ID INT) ENGINE=MYISAM;
+CREATE TABLE m1 (ID INT) ENGINE=MRG_MYISAM UNION=(t1) INSERT_METHOD=FIRST;
+INSERT INTO t1 VALUES ();
+INSERT INTO m1 VALUES ();
+LOCK TABLE t1 WRITE, m1 WRITE;
+FLUSH TABLES m1, t1;
+OPTIMIZE TABLE t1;
+Table Op Msg_type Msg_text
+test.t1 optimize status OK
+FLUSH TABLES m1, t1;
+UNLOCK TABLES;
+DROP TABLE t1, m1;
+CREATE TABLE tm1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1) INSERT_METHOD=FIRST;
+SELECT table_schema, table_name, table_type, engine, version, row_format, table_comment FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA = 'test' and TABLE_NAME='tm1';
+table_schema table_name table_type engine version row_format table_comment
+test tm1 BASE TABLE NULL NULL NULL Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+Warnings:
+Warning 1168 Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+DROP TABLE tm1;
+CREATE TABLE t1(C1 INT, C2 INT, KEY C1(C1), KEY C2(C2)) ENGINE=MYISAM;
+CREATE TABLE t2(C1 INT, C2 INT, KEY C1(C1), KEY C2(C2)) ENGINE=MYISAM;
+CREATE TABLE t3(C1 INT, C2 INT, KEY C1(C1), KEY C2(C2)) ENGINE=MYISAM;
+CREATE TABLE t4(C1 INT, C2 INT, KEY C1(C1), KEY C2(C2))
+ENGINE=MRG_MYISAM UNION=(t1, t2, t3);
+INSERT INTO t1 VALUES (1,1), (1,2),(1,3), (1,4);
+INSERT INTO t2 VALUES (2,1), (2,2),(2,3), (2,4);
+INSERT INTO t3 VALUES (3,1), (3,2),(3,3), (3,4);
+EXPLAIN SELECT COUNT(*) FROM t1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
+EXPLAIN SELECT COUNT(*) FROM t4;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
+DROP TABLE t1, t2, t3, t4;
+CREATE TABLE t1(a INT, KEY(a));
+INSERT INTO t1 VALUES(0),(1),(2),(3),(4);
+ANALYZE TABLE t1;
+Table Op Msg_type Msg_text
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status OK
+CREATE TABLE m1(a INT, KEY(a)) ENGINE=MERGE UNION=(t1);
+SELECT CARDINALITY FROM INFORMATION_SCHEMA.STATISTICS WHERE TABLE_SCHEMA='test' AND TABLE_NAME='m1';
+CARDINALITY
+5
+SELECT CARDINALITY FROM INFORMATION_SCHEMA.STATISTICS WHERE TABLE_SCHEMA='test' AND TABLE_NAME='m1';
+CARDINALITY
+5
+SELECT CARDINALITY FROM INFORMATION_SCHEMA.STATISTICS WHERE TABLE_SCHEMA='test' AND TABLE_NAME='m1';
+CARDINALITY
+5
+SELECT CARDINALITY FROM INFORMATION_SCHEMA.STATISTICS WHERE TABLE_SCHEMA='test' AND TABLE_NAME='m1';
+CARDINALITY
+5
+DROP TABLE t1, m1;
+#
+# Bug #40675 MySQL 5.1 crash with index merge algorithm and Merge tables
+#
+# create MYISAM table t1 and insert values into it
+CREATE TABLE t1(a INT);
+INSERT INTO t1 VALUES(1);
+# create MYISAM table t2 and insert values into it
+CREATE TABLE t2(a INT, b INT, dummy CHAR(16) DEFAULT '', KEY(a), KEY(b));
+INSERT INTO t2(a,b) VALUES
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(1,2);
+# Create the merge table t3
+CREATE TABLE t3(a INT, b INT, dummy CHAR(16) DEFAULT '', KEY(a), KEY(b))
+ENGINE=MERGE UNION=(t2) INSERT_METHOD=FIRST;
+# Lock tables t1 and t3 for write
+LOCK TABLES t1 WRITE, t3 WRITE;
+# Insert values into the merge table t3
+INSERT INTO t3(a,b) VALUES(1,2);
+# select from the join of t2 and t3 (The merge table)
+SELECT t3.a FROM t1,t3 WHERE t3.b=2 AND t3.a=1;
+a
+1
+1
+# Unlock the tables
+UNLOCK TABLES;
+# drop the created tables
+DROP TABLE t1, t2, t3;
+# insert duplicate value in child table while merge table doesn't have key
+create table t1 (
+col1 int(10),
+primary key (col1)
+) ENGINE=MyISAM DEFAULT CHARSET=latin1;
+CREATE TABLE m1 (
+col1 int(10) NOT NULL
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 INSERT_METHOD=LAST UNION=(t1);
+insert into m1 (col1) values (1);
+insert into m1 (col1) values (1);
+ERROR 23000: Can't write; duplicate key in table 'm1'
+drop table m1, t1;
+#
+# Bug#45800 crash when replacing into a merge table and there is a duplicate
+#
+# Replace duplicate value in child table when merge table doesn't have key
+CREATE TABLE t1 (c1 INT PRIMARY KEY) ENGINE=MyISAM;
+CREATE TABLE m1 (c1 INT NOT NULL) ENGINE=MRG_MyISAM INSERT_METHOD=LAST UNION=(t1);
+INSERT INTO m1 VALUES (666);
+SELECT * FROM m1;
+c1
+666
+# insert the duplicate value into the merge table
+REPLACE INTO m1 VALUES (666);
+SELECT * FROM m1;
+c1
+666
+DROP TABLE m1, t1;
+# Insert... on duplicate key update (with duplicate values in the table)
+CREATE TABLE t1 (c1 INT PRIMARY KEY) ENGINE=MyISAM;
+CREATE TABLE m1 (c1 INT NOT NULL) ENGINE=MRG_MyISAM INSERT_METHOD=LAST UNION=(t1);
+INSERT INTO m1 VALUES (666);
+SELECT * FROM m1;
+c1
+666
+# insert the duplicate value into the merge table
+INSERT INTO m1 VALUES (666) ON DUPLICATE KEY UPDATE c1=c1+1;
+SELECT * FROM m1;
+c1
+667
+DROP TABLE m1, t1;
+# Insert duplicate value on MERGE table, where, MERGE has a key but MyISAM has more keys
+CREATE TABLE t1 (c1 INT, c2 INT, UNIQUE (c1), UNIQUE (c2));
+CREATE TABLE m1 (c1 INT, c2 INT, UNIQUE (c1)) ENGINE=MRG_MyISAM INSERT_METHOD=LAST UNION=(t1);
+INSERT INTO m1 VALUES (1,2);
+# insert the duplicate value into the merge table
+INSERT INTO m1 VALUES (3,2);
+ERROR 23000: Can't write; duplicate key in table 'm1'
+DROP TABLE m1,t1;
+# Try to define MERGE and MyISAM with keys on different columns
+CREATE TABLE t1 (c1 INT, c2 INT, UNIQUE (c1));
+CREATE TABLE m1 (c1 INT, c2 INT, UNIQUE (c2)) ENGINE=MRG_MyISAM INSERT_METHOD=LAST UNION=(t1);
+# Try accessing the merge table for inserts (error occurs)
+INSERT INTO m1 VALUES (1,2);
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+INSERT INTO m1 VALUES (1,4);
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+DROP TABLE m1,t1;
+CREATE TABLE t1 (
+col1 INT(10)
+) ENGINE=MyISAM DEFAULT CHARSET=latin1;
+CREATE VIEW v1 as SELECT * FROM t1;
+CREATE TABLE m1 (
+col1 INT(10)
+)ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 INSERT_METHOD=LAST UNION=(v1);
+#Select should detect that the child table is a view and fail.
+SELECT * FROM m1;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+DROP VIEW v1;
+DROP TABLE m1, t1;
+#
+# Bug #45796: invalid memory reads and writes when altering merge and
+# base tables
+#
+CREATE TABLE t1(c1 INT) ENGINE=MyISAM;
+CREATE TABLE m1(c1 INT) ENGINE=MERGE UNION=(t1);
+ALTER TABLE m1 ADD INDEX idx_c1(c1);
+SELECT * FROM m1;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+ALTER TABLE t1 ADD INDEX idx_c1(c1);
+SELECT * FROM m1;
+c1
+DROP TABLE m1;
+DROP TABLE t1;
+#
+# Bug45781 infinite hang/crash in "opening tables" after handler tries to
+# open merge table
+#
+CREATE TABLE t1(a int)engine=myisam;
+CREATE TABLE t2(a int)engine=myisam;
+CREATE TABLE t3(a int)engine=myisam;
+CREATE TABLE t4(a int)engine=myisam;
+CREATE TABLE t5(a int)engine=myisam;
+CREATE TABLE t6(a int)engine=myisam;
+CREATE TABLE t7(a int)engine=myisam;
+CREATE TABLE m1(a int)engine=merge union=(t1,t2,t3,t4,t5,t6,t7);
+SELECT 1 FROM m1;
+1
+HANDLER m1 OPEN;
+ERROR HY000: Storage engine MRG_MyISAM of the table `test`.`m1` doesn't have this option
+DROP TABLE m1,t1,t2,t3,t4,t5,t6,t7;
+SELECT 1 FROM m1;
+ERROR 42S02: Table 'test.m1' doesn't exist
+#
+# Bug #46614: Assertion in show_create_trigger()
+#
+CREATE TABLE t1(a int);
+CREATE TABLE t2(a int);
+CREATE TABLE t3(a int) ENGINE = MERGE UNION(t1, t2);
+CREATE TRIGGER tr1 AFTER INSERT ON t3 FOR EACH ROW CALL foo();
+SHOW CREATE TRIGGER tr1;
+Trigger sql_mode SQL Original Statement character_set_client collation_connection Database Collation Created
+tr1 STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION CREATE DEFINER=`root`@`localhost` TRIGGER tr1 AFTER INSERT ON t3 FOR EACH ROW CALL foo() latin1 latin1_swedish_ci latin1_swedish_ci #
+DROP TRIGGER tr1;
+DROP TABLE t1, t2, t3;
+#
+# BUG#48265 - MRG_MYISAM problem (works in 5.0.85, does't work in 5.1.40)
+#
+CREATE DATABASE `test/1`;
+CREATE TABLE `test/1`.`t/1`(a INT);
+CREATE TABLE m1(a INT) ENGINE=MERGE UNION=(`test/1`.`t/1`);
+SELECT * FROM m1;
+a
+SHOW CREATE TABLE m1;
+Table Create Table
+m1 CREATE TABLE `m1` (
+ `a` int(11) DEFAULT NULL
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci UNION=(`test/1`.`t/1`)
+DROP TABLE m1;
+CREATE TABLE `test/1`.m1(a INT) ENGINE=MERGE UNION=(`test/1`.`t/1`);
+SELECT * FROM `test/1`.m1;
+a
+SHOW CREATE TABLE `test/1`.m1;
+Table Create Table
+m1 CREATE TABLE `m1` (
+ `a` int(11) DEFAULT NULL
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci UNION=(`t/1`)
+DROP TABLE `test/1`.m1;
+DROP TABLE `test/1`.`t/1`;
+CREATE TEMPORARY TABLE `test/1`.`t/1`(a INT);
+CREATE TEMPORARY TABLE m1(a INT) ENGINE=MERGE UNION=(`test/1`.`t/1`);
+SELECT * FROM m1;
+a
+SHOW CREATE TABLE m1;
+Table Create Table
+m1 CREATE TEMPORARY TABLE `m1` (
+ `a` int(11) DEFAULT NULL
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci UNION=(`test/1`.`t/1`)
+DROP TABLE m1;
+CREATE TEMPORARY TABLE `test/1`.m1(a INT) ENGINE=MERGE UNION=(`test/1`.`t/1`);
+SELECT * FROM `test/1`.m1;
+a
+SHOW CREATE TABLE `test/1`.m1;
+Table Create Table
+m1 CREATE TEMPORARY TABLE `m1` (
+ `a` int(11) DEFAULT NULL
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci UNION=(`t/1`)
+DROP TABLE `test/1`.m1;
+DROP TABLE `test/1`.`t/1`;
+DROP DATABASE `test/1`;
+CREATE TABLE `t@1`(a INT);
+SELECT * FROM m1;
+a
+SHOW CREATE TABLE m1;
+Table Create Table
+m1 CREATE TABLE `m1` (
+ `a` int(11) DEFAULT NULL
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci UNION=(`t@1`)
+DROP TABLE `t@1`;
+CREATE DATABASE `test@1`;
+CREATE TABLE `test@1`.`t@1`(a INT);
+FLUSH TABLE m1;
+SELECT * FROM m1;
+a
+SHOW CREATE TABLE m1;
+Table Create Table
+m1 CREATE TABLE `m1` (
+ `a` int(11) DEFAULT NULL
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci UNION=(`test@1`.`t@1`)
+DROP TABLE m1;
+DROP TABLE `test@1`.`t@1`;
+DROP DATABASE `test@1`;
+#
+# Bug#51494c rash with join, explain and 'sounds like' operator
+#
+CREATE TABLE t1 (a INT) ENGINE=MYISAM;
+INSERT INTO t1 VALUES(1);
+CREATE TABLE t2 (b INT NOT NULL,c INT,d INT,e BLOB NOT NULL,
+KEY idx0 (d, c)) ENGINE=MERGE;
+EXPLAIN SELECT * FROM t1 NATURAL RIGHT JOIN
+t2 WHERE b SOUNDS LIKE e AND d = 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+DROP TABLE t2, t1;
+#
+# Bug#46339 - crash on REPAIR TABLE merge table USE_FRM
+#
+CREATE TABLE t1 (c1 INT) ENGINE=MYISAM;
+CREATE TABLE m1 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1) INSERT_METHOD=LAST;
+LOCK TABLE m1 READ;
+REPAIR TABLE m1 USE_FRM;
+Table Op Msg_type Msg_text
+test.m1 repair Error Table 'm1' was locked with a READ lock and can't be updated
+test.m1 repair status Operation failed
+UNLOCK TABLES;
+REPAIR TABLE m1 USE_FRM;
+Table Op Msg_type Msg_text
+test.m1 repair note The storage engine for the table doesn't support repair
+DROP TABLE m1,t1;
+CREATE TABLE m1 (f1 BIGINT) ENGINE=MRG_MyISAM UNION(t1);
+REPAIR TABLE m1 USE_FRM;
+Table Op Msg_type Msg_text
+test.m1 repair Warning Can't open table
+test.m1 repair error Corrupt
+CREATE TABLE t1 (f1 BIGINT) ENGINE = MyISAM;
+REPAIR TABLE m1 USE_FRM;
+Table Op Msg_type Msg_text
+test.m1 repair note The storage engine for the table doesn't support repair
+REPAIR TABLE m1;
+Table Op Msg_type Msg_text
+test.m1 repair note The storage engine for the table doesn't support repair
+DROP TABLE m1, t1;
+CREATE TEMPORARY TABLE m1 (f1 BIGINT) ENGINE=MRG_MyISAM UNION(t1);
+REPAIR TABLE m1 USE_FRM;
+Table Op Msg_type Msg_text
+test.m1 repair Error Table 'test.m1' doesn't exist
+test.m1 repair error Corrupt
+CREATE TEMPORARY TABLE t1 (f1 BIGINT) ENGINE=MyISAM;
+REPAIR TABLE m1 USE_FRM;
+Table Op Msg_type Msg_text
+m1 repair error Cannot repair temporary table from .frm file
+REPAIR TABLE m1;
+Table Op Msg_type Msg_text
+test.m1 repair note The storage engine for the table doesn't support repair
+DROP TABLE m1, t1;
+create temporary table t1_temp(i int);
+create temporary table tm_temp_temp (i int) engine=merge union=(t1_temp) insert_method=last;
+alter table tm_temp_temp insert_method=first;
+check table tm_temp_temp;
+Table Op Msg_type Msg_text
+test.tm_temp_temp check status OK
+drop temporary table t1_temp, tm_temp_temp;
+End of 5.1 tests
+#
+# MDEV-4277: Crash inside mi_killed_in_mariadb() with myisammrg
+#
+create table t1 (a int);
+insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
+create table t2 ( i int ) engine=myisam;
+insert into t2 values (1),(2);
+create table t3 (a int, b int, filler char(100), key(a), key(b)) engine=myisam;
+create table t4 like t3;
+insert into t3
+select A.a+10*B.a+100*C.a,
+A.a+10*B.a+100*C.a,
+'filler-data-FILLER-DATA-qqq'
+from t1 A, t1 B, t1 C where C.a < 5;
+insert into t4
+select A.a+10*B.a+100*C.a,
+A.a+10*B.a+100*C.a,
+'filler-data-FILLER-DATA-qqq'
+from t1 A, t1 B, t1 C where C.a >= 5;
+create table t5 like t3;
+alter table t5 engine=merge;
+alter table t5 union(t3, t4);
+update t5 set b=999, a=999 where b>950;
+explain
+select * from t2, t5 where t5.a=999 and t5.b=999;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t2 ALL NULL NULL NULL NULL 2
+1 SIMPLE t5 index_merge a,b a,b 5,5 NULL 6 Using intersect(a,b); Using where; Using join buffer (flat, BNL join)
+select * from t2, t5 where t5.a=999 and t5.b=999;
+i a b filler
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+1 999 999 filler-data-FILLER-DATA-qqq
+2 999 999 filler-data-FILLER-DATA-qqq
+drop table t5;
+drop table t1,t2,t3,t4;
+End of 5.3 tests
+CREATE TABLE t1(a INT, KEY(a)) ENGINE=merge;
+SELECT MAX(a) FROM t1;
+MAX(a)
+NULL
+DROP TABLE t1;
+#
+# An additional test case for Bug#27430 Crash in subquery code
+# when in PS and table DDL changed after PREPARE
+#
+# Test merge table with too many merge children.
+#
+set @save_table_open_cache=@@global.table_open_cache;
+#
+# Set @@global.table_open_cache to minimum
+#
+set @@global.table_open_cache=400;
+select @@table_open_cache;
+@@table_open_cache
+400
+set @a=null;
+#
+# Create 400 merge children
+#
+set @a=concat("create table t_parent (a int) union(", @a,
+") insert_method=first engine=mrg_myisam");
+prepare stmt from @a;
+execute stmt;
+prepare stmt from "select * from t_parent";
+execute stmt;
+execute stmt;
+execute stmt;
+deallocate prepare stmt;
+#
+# Create merge parent
+#
+#
+# Cleanup
+#
+drop table t_parent;
+set @@global.table_open_cache=@save_table_open_cache;
+CREATE DATABASE mysql_test1;
+CREATE TABLE t1 ... DATA DIRECTORY=... INDEX DIRECTORY=...
+CREATE TABLE mysql_test1.t2 ... DATA DIRECTORY=... INDEX DIRECTORY=...
+CREATE TABLE m1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1,mysql_test1.t2)
+INSERT_METHOD=LAST;
+INSERT INTO t1 VALUES (1);
+INSERT INTO mysql_test1.t2 VALUES (2);
+SELECT * FROM m1;
+c1
+1
+2
+DROP TABLE t1, mysql_test1.t2, m1;
+DROP DATABASE mysql_test1;
+CREATE TABLE t1 (c1 INT);
+CREATE TABLE t2 (c1 INT);
+INSERT INTO t1 (c1) VALUES (1);
+CREATE TABLE tm1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1,t2) INSERT_METHOD=FIRST;
+CREATE TABLE t3 (c1 INT);
+INSERT INTO t3 (c1) VALUES (1);
+CREATE FUNCTION f1() RETURNS INT RETURN (SELECT MAX(c1) FROM t3);
+CREATE VIEW v1 AS SELECT foo.c1 c1, f1() c2, bar.c1 c3, f1() c4
+FROM tm1 foo, tm1 bar, t3;
+SELECT * FROM v1;
+c1 c2 c3 c4
+1 1 1 1
+DROP FUNCTION f1;
+DROP VIEW v1;
+DROP TABLE tm1, t1, t2, t3;
+CREATE TEMPORARY TABLE t1 (c1 INT);
+CREATE TEMPORARY TABLE t2 (c1 INT);
+CREATE TEMPORARY TABLE tm1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1,t2)
+INSERT_METHOD=FIRST;
+CREATE FUNCTION f1() RETURNS INT RETURN (SELECT MAX(c1) FROM tm1);
+INSERT INTO tm1 (c1) VALUES (1);
+SELECT f1() FROM (SELECT 1) AS c1;
+f1()
+1
+DROP FUNCTION f1;
+DROP TABLE tm1, t1, t2;
+CREATE FUNCTION f1() RETURNS INT
+BEGIN
+CREATE TEMPORARY TABLE t1 (c1 INT);
+CREATE TEMPORARY TABLE t2 (c1 INT);
+CREATE TEMPORARY TABLE tm1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1,t2);
+INSERT INTO t1 (c1) VALUES (1);
+RETURN (SELECT MAX(c1) FROM tm1);
+END|
+SELECT f1() FROM (SELECT 1 UNION SELECT 1) c1;
+f1()
+1
+DROP FUNCTION f1;
+DROP TABLE tm1, t1, t2;
+CREATE TABLE t1 (c1 INT) ENGINE=MyISAM;
+CREATE TABLE tm1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1) INSERT_METHOD=LAST;
+INSERT INTO tm1 VALUES (1);
+SELECT * FROM tm1;
+c1
+1
+DROP TABLE tm1, t1;
+CREATE FUNCTION f1() RETURNS INT
+BEGIN
+INSERT INTO tm1 VALUES (1);
+RETURN (SELECT MAX(c1) FROM tm1);
+END|
+CREATE TABLE t1 (c1 INT) ENGINE=MyISAM;
+CREATE TABLE tm1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1) INSERT_METHOD=LAST;
+SELECT f1();
+f1()
+1
+DROP FUNCTION f1;
+DROP TABLE tm1, t1;
+CREATE TABLE t1 (c1 INT) ENGINE=MyISAM;
+CREATE TABLE tm1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1) INSERT_METHOD=LAST;
+LOCK TABLE tm1 WRITE;
+INSERT INTO tm1 VALUES (1);
+SELECT * FROM tm1;
+c1
+1
+UNLOCK TABLES;
+DROP TABLE tm1, t1;
+CREATE FUNCTION f1() RETURNS INT
+BEGIN
+INSERT INTO tm1 VALUES (1);
+RETURN (SELECT MAX(c1) FROM tm1);
+END|
+CREATE TABLE t1 (c1 INT) ENGINE=MyISAM;
+CREATE TABLE tm1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1) INSERT_METHOD=LAST;
+LOCK TABLE tm1 WRITE;
+SELECT f1();
+f1()
+1
+UNLOCK TABLES;
+DROP FUNCTION f1;
+DROP TABLE tm1, t1;
+CREATE TABLE t1 (c1 INT) ENGINE=MyISAM;
+CREATE TABLE t2 (c1 INT) ENGINE=MyISAM;
+CREATE TABLE tm1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1) INSERT_METHOD=LAST;
+CREATE TRIGGER t2_ai AFTER INSERT ON t2
+FOR EACH ROW INSERT INTO tm1 VALUES(11);
+LOCK TABLE t2 WRITE;
+INSERT INTO t2 VALUES (2);
+SELECT * FROM tm1;
+c1
+11
+SELECT * FROM t2;
+c1
+2
+UNLOCK TABLES;
+DROP TRIGGER t2_ai;
+DROP TABLE tm1, t1, t2;
+CREATE TEMPORARY TABLE t1 (c1 INT) ENGINE=MyISAM;
+CREATE TEMPORARY TABLE tm1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1)
+INSERT_METHOD=LAST;
+INSERT INTO tm1 VALUES (1);
+SELECT * FROM tm1;
+c1
+1
+DROP TABLE tm1, t1;
+CREATE FUNCTION f1() RETURNS INT
+BEGIN
+INSERT INTO tm1 VALUES (1);
+RETURN (SELECT MAX(c1) FROM tm1);
+END|
+CREATE TEMPORARY TABLE t1 (c1 INT) ENGINE=MyISAM;
+CREATE TEMPORARY TABLE tm1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1)
+INSERT_METHOD=LAST;
+SELECT f1();
+f1()
+1
+DROP FUNCTION f1;
+DROP TABLE tm1, t1;
+CREATE TEMPORARY TABLE t1 (c1 INT) ENGINE=MyISAM;
+CREATE TEMPORARY TABLE tm1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1)
+INSERT_METHOD=LAST;
+CREATE TABLE t9 (c1 INT) ENGINE=MyISAM;
+LOCK TABLE t9 WRITE;
+INSERT INTO tm1 VALUES (1);
+SELECT * FROM tm1;
+c1
+1
+UNLOCK TABLES;
+DROP TABLE tm1, t1, t9;
+CREATE FUNCTION f1() RETURNS INT
+BEGIN
+INSERT INTO tm1 VALUES (1);
+RETURN (SELECT MAX(c1) FROM tm1);
+END|
+CREATE TEMPORARY TABLE t1 (c1 INT) ENGINE=MyISAM;
+CREATE TEMPORARY TABLE tm1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1)
+INSERT_METHOD=LAST;
+CREATE TABLE t9 (c1 INT) ENGINE=MyISAM;
+LOCK TABLE t9 WRITE;
+SELECT f1();
+f1()
+1
+UNLOCK TABLES;
+DROP FUNCTION f1;
+DROP TABLE tm1, t1, t9;
+CREATE TEMPORARY TABLE t1 (c1 INT) ENGINE=MyISAM;
+CREATE TEMPORARY TABLE tm1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1)
+INSERT_METHOD=LAST;
+CREATE TABLE t2 (c1 INT) ENGINE=MyISAM;
+CREATE TRIGGER t2_ai AFTER INSERT ON t2
+FOR EACH ROW INSERT INTO tm1 VALUES(11);
+LOCK TABLE t2 WRITE;
+INSERT INTO t2 VALUES (2);
+SELECT * FROM tm1;
+c1
+11
+SELECT * FROM t2;
+c1
+2
+UNLOCK TABLES;
+DROP TRIGGER t2_ai;
+DROP TABLE tm1, t1, t2;
+#
+# Don't allow an update of a MERGE child in a trigger
+# if the table's already being modified by the main
+# statement.
+#
+CREATE TABLE t1 (c1 INT) ENGINE=MyISAM;
+CREATE TABLE tm1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1)
+INSERT_METHOD=LAST;
+CREATE TRIGGER tm1_ai AFTER INSERT ON tm1
+FOR EACH ROW INSERT INTO t1 VALUES(11);
+LOCK TABLE tm1 WRITE, t1 WRITE;
+INSERT INTO tm1 VALUES (1);
+ERROR HY000: Can't update table 't1' in stored function/trigger because it is already used by statement which invoked this stored function/trigger
+SELECT * FROM tm1;
+c1
+1
+UNLOCK TABLES;
+LOCK TABLE t1 WRITE, tm1 WRITE;
+INSERT INTO tm1 VALUES (1);
+ERROR HY000: Can't update table 't1' in stored function/trigger because it is already used by statement which invoked this stored function/trigger
+SELECT * FROM tm1;
+c1
+1
+1
+UNLOCK TABLES;
+DROP TRIGGER tm1_ai;
+DROP TABLE tm1, t1;
+#
+# Don't select MERGE child when trying to get a prelocked table.
+#
+# Due to a limitation demonstrated by the previous test
+# we can no longer use a write-locked prelocked table.
+# The test is kept for historical purposes.
+#
+CREATE TABLE t1 (c1 INT) ENGINE=MyISAM;
+CREATE TABLE tm1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1)
+INSERT_METHOD=LAST;
+CREATE TRIGGER tm1_ai AFTER INSERT ON tm1
+FOR EACH ROW SELECT max(c1) FROM t1 INTO @var;
+LOCK TABLE tm1 WRITE, t1 WRITE;
+INSERT INTO tm1 VALUES (1);
+SELECT * FROM tm1;
+c1
+1
+UNLOCK TABLES;
+LOCK TABLE t1 WRITE, tm1 WRITE;
+INSERT INTO tm1 VALUES (1);
+SELECT * FROM tm1;
+c1
+1
+1
+UNLOCK TABLES;
+DROP TRIGGER tm1_ai;
+DROP TABLE tm1, t1;
+CREATE TABLE t1 (c1 INT) ENGINE=MyISAM;
+CREATE TABLE t2 (c1 INT) ENGINE=MyISAM;
+CREATE TABLE t3 (c1 INT) ENGINE=MyISAM;
+CREATE TABLE t4 (c1 INT) ENGINE=MyISAM;
+CREATE TABLE t5 (c1 INT) ENGINE=MyISAM;
+CREATE TABLE tm1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1,t2,t3,t4,t5)
+INSERT_METHOD=LAST;
+CREATE TRIGGER t2_au AFTER UPDATE ON t2
+FOR EACH ROW SELECT MAX(c1) FROM t1 INTO @var;
+CREATE FUNCTION f1() RETURNS INT
+RETURN (SELECT MAX(c1) FROM t4);
+LOCK TABLE tm1 WRITE, t1 WRITE, t2 WRITE, t3 WRITE, t4 WRITE, t5 WRITE;
+INSERT INTO t1 VALUES(1);
+INSERT INTO t2 VALUES(2);
+INSERT INTO t3 VALUES(3);
+INSERT INTO t4 VALUES(4);
+INSERT INTO t5 VALUES(5);
+connect con1,localhost,root,,;
+UPDATE t2, tm1 SET t2.c1=f1();
+connection default;
+FLUSH TABLES;
+FLUSH TABLES;
+UNLOCK TABLES;
+connection con1;
+disconnect con1;
+connection default;
+SELECT * FROM tm1;
+c1
+1
+4
+3
+4
+5
+DROP TRIGGER t2_au;
+DROP FUNCTION f1;
+DROP TABLE tm1, t1, t2, t3, t4, t5;
+#
+# Bug#47633 - assert in ha_myisammrg::info during OPTIMIZE
+#
+CREATE TEMPORARY TABLE t1 (c1 INT);
+ALTER TABLE t1 ENGINE=MERGE UNION(t_not_exists,t1);
+OPTIMIZE TABLE t1;
+Table Op Msg_type Msg_text
+test.t1 optimize Error Table 'test.t_not_exists' doesn't exist
+test.t1 optimize Error Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+test.t1 optimize error Corrupt
+DROP TABLE t1;
+#
+# Bug#36171 - CREATE TEMPORARY TABLE and MERGE engine
+# More tests with TEMPORARY MERGE table and permanent children.
+# First without locked tables.
+#
+#
+CREATE TABLE t1 (c1 INT, c2 INT) ENGINE=MyISAM;
+CREATE TABLE t2 (c1 INT, c2 INT) ENGINE=MyISAM;
+CREATE TEMPORARY TABLE m1 (c1 INT, c2 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+INSERT_METHOD=LAST;
+SHOW CREATE TABLE t1;
+Table Create Table
+t1 CREATE TABLE `t1` (
+ `c1` int(11) DEFAULT NULL,
+ `c2` int(11) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
+SHOW CREATE TABLE m1;
+Table Create Table
+m1 CREATE TEMPORARY TABLE `m1` (
+ `c1` int(11) DEFAULT NULL,
+ `c2` int(11) DEFAULT NULL
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci INSERT_METHOD=LAST UNION=(`t1`,`t2`)
+SELECT * FROM m1;
+c1 c2
+INSERT INTO t1 VALUES (111, 121);
+INSERT INTO m1 VALUES (211, 221);
+SELECT * FROM m1;
+c1 c2
+111 121
+211 221
+SELECT * FROM t1;
+c1 c2
+111 121
+SELECT * FROM t2;
+c1 c2
+211 221
+#
+ALTER TABLE m1 RENAME m2;
+SHOW CREATE TABLE m2;
+Table Create Table
+m2 CREATE TEMPORARY TABLE `m2` (
+ `c1` int(11) DEFAULT NULL,
+ `c2` int(11) DEFAULT NULL
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci INSERT_METHOD=LAST UNION=(`t1`,`t2`)
+SELECT * FROM m2;
+c1 c2
+111 121
+211 221
+#
+CREATE TEMPORARY TABLE m1 (c1 INT, c2 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+INSERT_METHOD=LAST;
+ALTER TABLE m2 RENAME m1;
+ERROR 42S01: Table 'm1' already exists
+DROP TABLE m1;
+ALTER TABLE m2 RENAME m1;
+SHOW CREATE TABLE m1;
+Table Create Table
+m1 CREATE TEMPORARY TABLE `m1` (
+ `c1` int(11) DEFAULT NULL,
+ `c2` int(11) DEFAULT NULL
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci INSERT_METHOD=LAST UNION=(`t1`,`t2`)
+SELECT * FROM m1;
+c1 c2
+111 121
+211 221
+#
+ALTER TABLE m1 ADD COLUMN c3 INT;
+INSERT INTO m1 VALUES (212, 222, 232);
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+SELECT * FROM m1;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+ALTER TABLE t1 ADD COLUMN c3 INT;
+ALTER TABLE t2 ADD COLUMN c3 INT;
+INSERT INTO m1 VALUES (212, 222, 232);
+SELECT * FROM m1;
+c1 c2 c3
+111 121 NULL
+211 221 NULL
+212 222 232
+#
+ALTER TABLE m1 DROP COLUMN c3;
+INSERT INTO m1 VALUES (213, 223);
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+SELECT * FROM m1;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+ALTER TABLE t1 DROP COLUMN c3;
+ALTER TABLE t2 DROP COLUMN c3;
+INSERT INTO m1 VALUES (213, 223);
+SELECT * FROM m1;
+c1 c2
+111 121
+211 221
+212 222
+213 223
+#
+CREATE TABLE t3 (c1 INT, c2 INT) ENGINE=MyISAM;
+ALTER TABLE m1 UNION=(t1,t2,t3);
+INSERT INTO m1 VALUES (311, 321);
+SELECT * FROM m1;
+c1 c2
+111 121
+211 221
+212 222
+213 223
+311 321
+SELECT * FROM t1;
+c1 c2
+111 121
+SELECT * FROM t2;
+c1 c2
+211 221
+212 222
+213 223
+SELECT * FROM t3;
+c1 c2
+311 321
+#
+CREATE TEMPORARY TABLE t4 (c1 INT, c2 INT) ENGINE=MyISAM;
+ALTER TABLE m1 UNION=(t1,t2,t3,t4);
+INSERT INTO m1 VALUES (411, 421);
+SELECT * FROM m1;
+c1 c2
+111 121
+211 221
+212 222
+213 223
+311 321
+411 421
+SELECT * FROM t1;
+c1 c2
+111 121
+SELECT * FROM t2;
+c1 c2
+211 221
+212 222
+213 223
+SELECT * FROM t3;
+c1 c2
+311 321
+SELECT * FROM t4;
+c1 c2
+411 421
+#
+ALTER TABLE m1 ENGINE=MyISAM;
+SHOW CREATE TABLE m1;
+Table Create Table
+m1 CREATE TEMPORARY TABLE `m1` (
+ `c1` int(11) DEFAULT NULL,
+ `c2` int(11) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
+INSERT INTO m1 VALUES (511, 521);
+SELECT * FROM m1;
+c1 c2
+111 121
+211 221
+212 222
+213 223
+311 321
+411 421
+511 521
+#
+ALTER TABLE m1 ENGINE=MRG_MyISAM UNION=(t1,t2)
+INSERT_METHOD=LAST;
+SELECT * FROM m1;
+c1 c2
+111 121
+211 221
+212 222
+213 223
+SELECT * FROM t1;
+c1 c2
+111 121
+SELECT * FROM t2;
+c1 c2
+211 221
+212 222
+213 223
+#
+CREATE TEMPORARY TABLE t1 (c1 INT, c2 INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (611, 621);
+SELECT * FROM m1;
+c1 c2
+611 621
+211 221
+212 222
+213 223
+DROP TABLE t1;
+SELECT * FROM m1;
+c1 c2
+111 121
+211 221
+212 222
+213 223
+#
+#
+SHOW CREATE TABLE m1;
+Table Create Table
+m1 CREATE TEMPORARY TABLE `m1` (
+ `c1` int(11) DEFAULT NULL,
+ `c2` int(11) DEFAULT NULL
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci INSERT_METHOD=LAST UNION=(`t1`,`t2`)
+#
+CREATE TABLE m2 SELECT * FROM m1;
+SHOW CREATE TABLE m2;
+Table Create Table
+m2 CREATE TABLE `m2` (
+ `c1` int(11) DEFAULT NULL,
+ `c2` int(11) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
+SELECT * FROM m2;
+c1 c2
+111 121
+211 221
+212 222
+213 223
+DROP TABLE m2;
+#
+CREATE TEMPORARY TABLE m2 SELECT * FROM m1;
+SHOW CREATE TABLE m2;
+Table Create Table
+m2 CREATE TEMPORARY TABLE `m2` (
+ `c1` int(11) DEFAULT NULL,
+ `c2` int(11) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
+SELECT * FROM m2;
+c1 c2
+111 121
+211 221
+212 222
+213 223
+DROP TABLE m2;
+#
+CREATE TABLE m2 (c1 INT, c2 INT) ENGINE=MRG_MyISAM UNION=(t3,t4)
+INSERT_METHOD=LAST;
+SELECT * FROM m2;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+DROP TABLE m2;
+#
+CREATE TABLE m2 (c1 INT, c2 INT) ENGINE=MRG_MyISAM UNION=(t3,t4)
+INSERT_METHOD=LAST SELECT * FROM m1;
+ERROR HY000: 'test.m2' is not of type 'BASE TABLE'
+#
+CREATE TEMPORARY TABLE m2 (c1 INT, c2 INT) ENGINE=MRG_MyISAM UNION=(t3,t4)
+INSERT_METHOD=LAST SELECT * FROM m1;
+ERROR HY000: 'test.m2' is not of type 'BASE TABLE'
+#
+CREATE TABLE m2 LIKE m1;
+SHOW CREATE TABLE m2;
+Table Create Table
+m2 CREATE TABLE `m2` (
+ `c1` int(11) DEFAULT NULL,
+ `c2` int(11) DEFAULT NULL
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci INSERT_METHOD=LAST UNION=(`t1`,`t2`)
+SELECT * FROM m2;
+c1 c2
+111 121
+211 221
+212 222
+213 223
+INSERT INTO m2 SELECT * FROM m1;
+SELECT * FROM m2;
+c1 c2
+111 121
+211 221
+212 222
+213 223
+111 121
+211 221
+212 222
+213 223
+DROP TABLE m2;
+#
+CREATE TEMPORARY TABLE m2 LIKE m1;
+SHOW CREATE TABLE m2;
+Table Create Table
+m2 CREATE TEMPORARY TABLE `m2` (
+ `c1` int(11) DEFAULT NULL,
+ `c2` int(11) DEFAULT NULL
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci INSERT_METHOD=LAST UNION=(`t1`,`t2`)
+SELECT * FROM m2;
+c1 c2
+111 121
+211 221
+212 222
+213 223
+111 121
+211 221
+212 222
+213 223
+INSERT INTO m2 SELECT * FROM m1;
+SELECT * FROM m2;
+c1 c2
+111 121
+211 221
+212 222
+213 223
+111 121
+211 221
+212 222
+213 223
+111 121
+211 221
+212 222
+213 223
+111 121
+211 221
+212 222
+213 223
+DROP TABLE m2;
+#
+CREATE TEMPORARY TABLE m2 (c1 INT, c2 INT) ENGINE=MRG_MyISAM UNION=(t3,t4)
+INSERT_METHOD=LAST;
+INSERT INTO m2 SELECT * FROM m1;
+SELECT * FROM m2;
+c1 c2
+311 321
+411 421
+111 121
+211 221
+212 222
+213 223
+111 121
+211 221
+212 222
+213 223
+111 121
+211 221
+212 222
+213 223
+111 121
+211 221
+212 222
+213 223
+#
+#
+LOCK TABLE m1 WRITE, m2 WRITE;
+SELECT * FROM m1,m2 WHERE m1.c1=m2.c1;
+c1 c2 c1 c2
+111 121 111 121
+111 121 111 121
+111 121 111 121
+111 121 111 121
+211 221 211 221
+211 221 211 221
+211 221 211 221
+211 221 211 221
+212 222 212 222
+212 222 212 222
+212 222 212 222
+212 222 212 222
+213 223 213 223
+213 223 213 223
+213 223 213 223
+213 223 213 223
+111 121 111 121
+111 121 111 121
+111 121 111 121
+111 121 111 121
+211 221 211 221
+211 221 211 221
+211 221 211 221
+211 221 211 221
+212 222 212 222
+212 222 212 222
+212 222 212 222
+212 222 212 222
+213 223 213 223
+213 223 213 223
+213 223 213 223
+213 223 213 223
+111 121 111 121
+111 121 111 121
+111 121 111 121
+111 121 111 121
+211 221 211 221
+211 221 211 221
+211 221 211 221
+211 221 211 221
+212 222 212 222
+212 222 212 222
+212 222 212 222
+212 222 212 222
+213 223 213 223
+213 223 213 223
+213 223 213 223
+213 223 213 223
+111 121 111 121
+111 121 111 121
+111 121 111 121
+111 121 111 121
+211 221 211 221
+211 221 211 221
+211 221 211 221
+211 221 211 221
+212 222 212 222
+212 222 212 222
+212 222 212 222
+212 222 212 222
+213 223 213 223
+213 223 213 223
+213 223 213 223
+213 223 213 223
+UNLOCK TABLES;
+DROP TABLE t1, t2, t3, t4, m1, m2;
+#
+# Bug#36171 - CREATE TEMPORARY TABLE and MERGE engine
+# More tests with TEMPORARY MERGE table and permanent children.
+# (continued) Now the same with locked table.
+#
+CREATE TABLE t1 (c1 INT, c2 INT) ENGINE=MyISAM;
+CREATE TABLE t2 (c1 INT, c2 INT) ENGINE=MyISAM;
+CREATE TEMPORARY TABLE m1 (c1 INT, c2 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+INSERT_METHOD=LAST;
+SHOW CREATE TABLE t1;
+Table Create Table
+t1 CREATE TABLE `t1` (
+ `c1` int(11) DEFAULT NULL,
+ `c2` int(11) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
+SHOW CREATE TABLE m1;
+Table Create Table
+m1 CREATE TEMPORARY TABLE `m1` (
+ `c1` int(11) DEFAULT NULL,
+ `c2` int(11) DEFAULT NULL
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci INSERT_METHOD=LAST UNION=(`t1`,`t2`)
+SELECT * FROM m1;
+c1 c2
+INSERT INTO t1 VALUES (111, 121);
+INSERT INTO m1 VALUES (211, 221);
+SELECT * FROM m1;
+c1 c2
+111 121
+211 221
+SELECT * FROM t1;
+c1 c2
+111 121
+SELECT * FROM t2;
+c1 c2
+211 221
+#
+LOCK TABLE m1 WRITE, t1 WRITE, t2 WRITE;
+#
+ALTER TABLE m1 RENAME m2;
+SHOW CREATE TABLE m2;
+Table Create Table
+m2 CREATE TEMPORARY TABLE `m2` (
+ `c1` int(11) DEFAULT NULL,
+ `c2` int(11) DEFAULT NULL
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci INSERT_METHOD=LAST UNION=(`t1`,`t2`)
+SELECT * FROM m2;
+c1 c2
+111 121
+211 221
+#
+CREATE TEMPORARY TABLE m1 (c1 INT, c2 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+INSERT_METHOD=LAST;
+ALTER TABLE m2 RENAME m1;
+ERROR 42S01: Table 'm1' already exists
+DROP TABLE m1;
+ALTER TABLE m2 RENAME m1;
+SHOW CREATE TABLE m1;
+Table Create Table
+m1 CREATE TEMPORARY TABLE `m1` (
+ `c1` int(11) DEFAULT NULL,
+ `c2` int(11) DEFAULT NULL
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci INSERT_METHOD=LAST UNION=(`t1`,`t2`)
+SELECT * FROM m1;
+c1 c2
+111 121
+211 221
+#
+ALTER TABLE m1 ADD COLUMN c3 INT;
+INSERT INTO m1 VALUES (212, 222, 232);
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+SELECT * FROM m1;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+ALTER TABLE t1 ADD COLUMN c3 INT;
+ALTER TABLE t2 ADD COLUMN c3 INT;
+INSERT INTO m1 VALUES (212, 222, 232);
+SELECT * FROM m1;
+c1 c2 c3
+111 121 NULL
+211 221 NULL
+212 222 232
+#
+ALTER TABLE m1 DROP COLUMN c3;
+INSERT INTO m1 VALUES (213, 223);
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+SELECT * FROM m1;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+ALTER TABLE t1 DROP COLUMN c3;
+ALTER TABLE t2 DROP COLUMN c3;
+INSERT INTO m1 VALUES (213, 223);
+SELECT * FROM m1;
+c1 c2
+111 121
+211 221
+212 222
+213 223
+#
+UNLOCK TABLES;
+CREATE TABLE t3 (c1 INT, c2 INT) ENGINE=MyISAM;
+ALTER TABLE m1 UNION=(t1,t2,t3);
+LOCK TABLE m1 WRITE;
+INSERT INTO m1 VALUES (311, 321);
+SELECT * FROM m1;
+c1 c2
+111 121
+211 221
+212 222
+213 223
+311 321
+SELECT * FROM t1;
+c1 c2
+111 121
+SELECT * FROM t2;
+c1 c2
+211 221
+212 222
+213 223
+SELECT * FROM t3;
+c1 c2
+311 321
+#
+CREATE TEMPORARY TABLE t4 (c1 INT, c2 INT) ENGINE=MyISAM;
+ALTER TABLE m1 UNION=(t1,t2,t3,t4);
+INSERT INTO m1 VALUES (411, 421);
+SELECT * FROM m1;
+c1 c2
+111 121
+211 221
+212 222
+213 223
+311 321
+411 421
+SELECT * FROM t1;
+c1 c2
+111 121
+SELECT * FROM t2;
+c1 c2
+211 221
+212 222
+213 223
+SELECT * FROM t3;
+c1 c2
+311 321
+SELECT * FROM t4;
+c1 c2
+411 421
+#
+ALTER TABLE m1 ENGINE=MyISAM;
+SHOW CREATE TABLE m1;
+Table Create Table
+m1 CREATE TEMPORARY TABLE `m1` (
+ `c1` int(11) DEFAULT NULL,
+ `c2` int(11) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
+INSERT INTO m1 VALUES (511, 521);
+SELECT * FROM m1;
+c1 c2
+111 121
+211 221
+212 222
+213 223
+311 321
+411 421
+511 521
+#
+ALTER TABLE m1 ENGINE=MRG_MyISAM UNION=(t1,t2)
+INSERT_METHOD=LAST;
+SELECT * FROM m1;
+c1 c2
+111 121
+211 221
+212 222
+213 223
+SELECT * FROM t1;
+c1 c2
+111 121
+SELECT * FROM t2;
+c1 c2
+211 221
+212 222
+213 223
+#
+CREATE TEMPORARY TABLE t1 (c1 INT, c2 INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (611, 621);
+SELECT * FROM m1;
+c1 c2
+611 621
+211 221
+212 222
+213 223
+DROP TABLE t1;
+SELECT * FROM m1;
+c1 c2
+111 121
+211 221
+212 222
+213 223
+#
+#
+SHOW CREATE TABLE m1;
+Table Create Table
+m1 CREATE TEMPORARY TABLE `m1` (
+ `c1` int(11) DEFAULT NULL,
+ `c2` int(11) DEFAULT NULL
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci INSERT_METHOD=LAST UNION=(`t1`,`t2`)
+CREATE TABLE m2 SELECT * FROM m1;
+ERROR HY000: Table 'm2' was not locked with LOCK TABLES
+#
+CREATE TEMPORARY TABLE m2 SELECT * FROM m1;
+SHOW CREATE TABLE m2;
+Table Create Table
+m2 CREATE TEMPORARY TABLE `m2` (
+ `c1` int(11) DEFAULT NULL,
+ `c2` int(11) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
+SELECT * FROM m2;
+c1 c2
+111 121
+211 221
+212 222
+213 223
+DROP TABLE m2;
+#
+CREATE TEMPORARY TABLE m2 (c1 INT, c2 INT) ENGINE=MRG_MyISAM UNION=(t3,t4)
+INSERT_METHOD=LAST;
+SELECT * FROM m2;
+c1 c2
+311 321
+411 421
+LOCK TABLE m1 WRITE, m2 WRITE;
+UNLOCK TABLES;
+DROP TABLE m2;
+LOCK TABLE m1 WRITE;
+#
+# ER_TABLE_NOT_LOCKED is returned in ps-protocol
+CREATE TABLE m2 (c1 INT, c2 INT) ENGINE=MRG_MyISAM UNION=(t3,t4)
+INSERT_METHOD=LAST SELECT * FROM m1;
+Got one of the listed errors
+#
+CREATE TEMPORARY TABLE m2 (c1 INT, c2 INT) ENGINE=MRG_MyISAM UNION=(t3,t4)
+INSERT_METHOD=LAST SELECT * FROM m1;
+ERROR HY000: 'test.m2' is not of type 'BASE TABLE'
+#
+CREATE TEMPORARY TABLE m2 LIKE m1;
+SHOW CREATE TABLE m2;
+Table Create Table
+m2 CREATE TEMPORARY TABLE `m2` (
+ `c1` int(11) DEFAULT NULL,
+ `c2` int(11) DEFAULT NULL
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci INSERT_METHOD=LAST UNION=(`t1`,`t2`)
+LOCK TABLE m1 WRITE, m2 WRITE;
+SHOW CREATE TABLE m2;
+Table Create Table
+m2 CREATE TEMPORARY TABLE `m2` (
+ `c1` int(11) DEFAULT NULL,
+ `c2` int(11) DEFAULT NULL
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci INSERT_METHOD=LAST UNION=(`t1`,`t2`)
+SELECT * FROM m2;
+c1 c2
+111 121
+211 221
+212 222
+213 223
+INSERT INTO m2 SELECT * FROM m1;
+SELECT * FROM m2;
+c1 c2
+111 121
+211 221
+212 222
+213 223
+111 121
+211 221
+212 222
+213 223
+DROP TABLE m2;
+#
+CREATE TEMPORARY TABLE m2 (c1 INT, c2 INT) ENGINE=MRG_MyISAM UNION=(t3,t4)
+INSERT_METHOD=LAST;
+LOCK TABLE m1 WRITE, m2 WRITE;
+INSERT INTO m2 SELECT * FROM m1;
+SELECT * FROM m2;
+c1 c2
+311 321
+411 421
+111 121
+211 221
+212 222
+213 223
+111 121
+211 221
+212 222
+213 223
+#
+UNLOCK TABLES;
+DROP TABLE t1, t2, t3, t4, m1, m2;
+#
+# Bug47098 assert in MDL_context::destroy on HANDLER
+# <damaged merge table> OPEN
+#
+# Test that merge tables are closed correctly when opened using
+# HANDLER ... OPEN.
+# The general case.
+connect con1,localhost,root,,;
+CREATE TABLE t1 (c1 int);
+CREATE TABLE t2 (c1 int);
+CREATE TABLE t3 (c1 int) ENGINE = MERGE UNION (t1,t2);
+START TRANSACTION;
+HANDLER t3 OPEN;
+ERROR HY000: Storage engine MRG_MyISAM of the table `test`.`t3` doesn't have this option
+DROP TABLE t1, t2, t3;
+connection default;
+# all mdl_tickets must have been released.
+disconnect con1;
+# The bug-specific case.
+connect con1,localhost,root,,;
+CREATE TABLE t1 (c1 int);
+CREATE TABLE t2 (c1 int);
+CREATE TABLE t3 (c1 int) ENGINE = MERGE UNION (t1,t2);
+DROP TABLE t2;
+START TRANSACTION;
+HANDLER t3 OPEN;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+DROP TABLE t1, t3;
+connection default;
+# all mdl_tickets must have been released.
+disconnect con1;
+#
+# A test case for Bug#47648 main.merge fails sporadically
+#
+# Make sure we correctly maintain lex->query_tables_last_own.
+#
+create table t1 (c1 int not null);
+create table t2 (c1 int not null);
+create table t3 (c1 int not null);
+create function f1 () returns int return (select max(c1) from t3);
+create table t4 (c1 int not null) engine=merge union=(t1,t2) insert_method=last ;
+select * from t4 where c1 < f1();
+c1
+prepare stmt from "select * from t4 where c1 < f1()";
+execute stmt;
+c1
+execute stmt;
+c1
+execute stmt;
+c1
+drop function f1;
+execute stmt;
+ERROR 42000: FUNCTION test.f1 does not exist
+execute stmt;
+ERROR 42000: FUNCTION test.f1 does not exist
+drop table t4, t3, t2, t1;
+#
+# Bug#51240 ALTER TABLE of a locked MERGE table fails
+#
+CREATE TABLE t1 (c1 INT);
+CREATE TABLE m1 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1);
+LOCK TABLE m1 WRITE;
+ALTER TABLE m1 ADD INDEX (c1);
+UNLOCK TABLES;
+DROP TABLE m1, t1;
+#
+# Locking the merge table won't implicitly lock children.
+#
+CREATE TABLE t1 (c1 INT);
+CREATE TABLE m1 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1);
+LOCK TABLE m1 WRITE;
+ALTER TABLE t1 ADD INDEX (c1);
+ERROR HY000: Table 't1' was locked with a READ lock and can't be updated
+LOCK TABLE m1 WRITE, t1 WRITE;
+ALTER TABLE t1 ADD INDEX (c1);
+UNLOCK TABLES;
+DROP TABLE m1, t1;
+#
+# Test for bug #37371 "CREATE TABLE LIKE merge loses UNION parameter"
+#
+create table t1 (i int) engine=myisam;
+create table m1 (i int) engine=mrg_myisam union=(t1) insert_method=first;
+create table m2 like m1;
+# Table definitions should match
+show create table m1;
+Table Create Table
+m1 CREATE TABLE `m1` (
+ `i` int(11) DEFAULT NULL
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci INSERT_METHOD=FIRST UNION=(`t1`)
+show create table m2;
+Table Create Table
+m2 CREATE TABLE `m2` (
+ `i` int(11) DEFAULT NULL
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci INSERT_METHOD=FIRST UNION=(`t1`)
+drop tables m1, m2, t1;
+#
+# Test case for Bug#54811 "Assert in mysql_lock_have_duplicate()"
+# Check that unique_table() works correctly for merge tables.
+#
+create table t1 (a int);
+create table t2 (a int);
+create table t3 (b int);
+create view v1 as select * from t3,t1;
+create table m1 (a int) engine=merge union (t1, t2) insert_method=last;
+create table m2 (a int) engine=merge union (t1, t2) insert_method=first;
+create temporary table tmp (b int);
+insert into tmp (b) values (1);
+insert into t1 (a) values (1);
+insert into t3 (b) values (1);
+insert into m1 (a) values ((select max(a) from m1));
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'INSERT' and as a separate source for data
+insert into m1 (a) values ((select max(a) from m2));
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'INSERT' and as a separate source for data
+insert into m1 (a) values ((select max(a) from t1));
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'INSERT' and as a separate source for data
+insert into m1 (a) values ((select max(a) from t2));
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'INSERT' and as a separate source for data
+insert into m1 (a) values ((select max(a) from t3, m1));
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'INSERT' and as a separate source for data
+insert into m1 (a) values ((select max(a) from t3, m2));
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'INSERT' and as a separate source for data
+insert into m1 (a) values ((select max(a) from t3, t1));
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'INSERT' and as a separate source for data
+insert into m1 (a) values ((select max(a) from t3, t2));
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'INSERT' and as a separate source for data
+insert into m1 (a) values ((select max(a) from tmp, m1));
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'INSERT' and as a separate source for data
+insert into m1 (a) values ((select max(a) from tmp, m2));
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'INSERT' and as a separate source for data
+insert into m1 (a) values ((select max(a) from tmp, t1));
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'INSERT' and as a separate source for data
+insert into m1 (a) values ((select max(a) from tmp, t2));
+ERROR HY000: Table 'm1' is specified twice, both as a target for 'INSERT' and as a separate source for data
+insert into m1 (a) values ((select max(a) from v1));
+ERROR HY000: The definition of table 'v1' prevents operation INSERT on table 'm1'
+insert into m1 (a) values ((select max(a) from tmp, v1));
+ERROR HY000: The definition of table 'v1' prevents operation INSERT on table 'm1'
+drop view v1;
+drop temporary table tmp;
+drop table t1, t2, t3, m1, m2;
+#
+# Bug#56494 Segfault in upgrade_shared_lock_to_exclusive() for
+# REPAIR of merge table
+#
+CREATE TABLE t1(a INT);
+ALTER TABLE t1 engine= MERGE UNION (t_not_exists);
+ANALYZE TABLE t1;
+Table Op Msg_type Msg_text
+test.t1 analyze Error Table 'test.t_not_exists' doesn't exist
+test.t1 analyze Error Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+test.t1 analyze error Corrupt
+CHECK TABLE t1;
+Table Op Msg_type Msg_text
+test.t1 check Error Table 'test.t_not_exists' is differently defined or of non-MyISAM type or doesn't exist
+test.t1 check Error Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+test.t1 check error Corrupt
+CHECKSUM TABLE t1;
+Table Checksum
+test.t1 NULL
+Warnings:
+Error 1146 Table 'test.t_not_exists' doesn't exist
+Error 1168 Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+OPTIMIZE TABLE t1;
+Table Op Msg_type Msg_text
+test.t1 optimize Error Table 'test.t_not_exists' doesn't exist
+test.t1 optimize Error Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+test.t1 optimize error Corrupt
+REPAIR TABLE t1;
+Table Op Msg_type Msg_text
+test.t1 repair Error Table 'test.t_not_exists' is differently defined or of non-MyISAM type or doesn't exist
+test.t1 repair Error Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+test.t1 repair error Corrupt
+REPAIR TABLE t1 USE_FRM;
+Table Op Msg_type Msg_text
+test.t1 repair Warning Can't open table
+test.t1 repair error Corrupt
+DROP TABLE t1;
+CREATE TABLE t1(a INT);
+CREATE TABLE t2(a INT) engine= MERGE UNION (t1);
+REPAIR TABLE t2 USE_FRM;
+Table Op Msg_type Msg_text
+test.t2 repair note The storage engine for the table doesn't support repair
+DROP TABLE t1, t2;
+#
+# Bug#57002 Assert in upgrade_shared_lock_to_exclusive()
+# for ALTER TABLE + MERGE tables
+#
+CREATE TABLE t1(a INT) engine=myisam;
+CREATE TABLE m1(a INT) engine=merge UNION(t1);
+LOCK TABLES t1 READ, m1 WRITE;
+ALTER TABLE t1 engine=myisam;
+ERROR HY000: Table 't1' was locked with a READ lock and can't be updated
+UNLOCK TABLES;
+DROP TABLE m1, t1;
+#
+# Test for bug #11754210 - "45777: CHECK TABLE DOESN'T SHOW ALL
+# PROBLEMS FOR MERGE TABLE COMPLIANCE IN 5.1"
+#
+create table t1(id int) engine=myisam;
+create view t3 as select 1 as id;
+create table t4(id int) engine=memory;
+create table m1(id int) engine=merge union=(t1,t2,t3,t4);
+select * from m1;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+# The below CHECK and REPAIR TABLE statements should
+# report all problems with underlying tables:
+# - absence of 't2',
+# - missing base table for 't3',
+# - wrong engine of 't4'.
+check table m1;
+Table Op Msg_type Msg_text
+test.m1 check Error Table 'test.t2' is differently defined or of non-MyISAM type or doesn't exist
+test.m1 check Error Table 'test.t3' is differently defined or of non-MyISAM type or doesn't exist
+test.m1 check Error Table 'test.t4' is differently defined or of non-MyISAM type or doesn't exist
+test.m1 check Error Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+test.m1 check error Corrupt
+repair table m1;
+Table Op Msg_type Msg_text
+test.m1 repair Error Table 'test.t2' is differently defined or of non-MyISAM type or doesn't exist
+test.m1 repair Error Table 'test.t3' is differently defined or of non-MyISAM type or doesn't exist
+test.m1 repair Error Table 'test.t4' is differently defined or of non-MyISAM type or doesn't exist
+test.m1 repair Error Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+test.m1 repair error Corrupt
+# Clean-up.
+drop tables m1, t1, t4;
+drop view t3;
+#
+# MDEV-10424 Assertion `ticket == __null' failed in MDL_request::set_type
+#
+CREATE TABLE t1 (f1 INT) ENGINE=MyISAM;
+CREATE TABLE tmerge (f1 INT) ENGINE=MERGE UNION=(t1);
+PREPARE stmt FROM "ANALYZE TABLE tmerge, t1";
+EXECUTE stmt;
+Table Op Msg_type Msg_text
+test.tmerge analyze status Engine-independent statistics collected
+test.tmerge analyze note The storage engine for the table doesn't support analyze
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status Table is already up to date
+EXECUTE stmt;
+Table Op Msg_type Msg_text
+test.tmerge analyze status Engine-independent statistics collected
+test.tmerge analyze note The storage engine for the table doesn't support analyze
+test.t1 analyze status Engine-independent statistics collected
+test.t1 analyze status Table is already up to date
+DEALLOCATE PREPARE stmt;
+DROP TABLE t1, tmerge;
+#
+# End of 5.5 tests
+#
+#
+# Additional coverage for refactoring which is made as part
+# of fix for bug #27480 "Extend CREATE TEMPORARY TABLES privilege
+# to allow temp table operations".
+#
+# Check that prelocking works correctly for various variants of
+# merge tables.
+#
+create table t1 (j int);
+insert into t1 values (1);
+create function f1() returns int return (select count(*) from m1);
+create temporary table t2 (a int) engine=myisam;
+insert into t2 values (1);
+create temporary table m1 (a int) engine=merge union=(t2);
+select f1() from t1;
+f1()
+1
+drop tables t2, m1;
+create table t2 (a int) engine=myisam;
+insert into t2 values (1);
+create table m1 (a int) engine=merge union=(t2);
+select f1() from t1;
+f1()
+1
+drop table m1;
+create temporary table m1 (a int) engine=merge union=(t2);
+select f1() from t1;
+f1()
+1
+drop tables t1, t2, m1;
+drop function f1;
+#
+# Check that REPAIR/CHECK and CHECKSUM statements work correctly
+# for various variants of merge tables.
+create table t1 (a int) engine=myisam;
+insert into t1 values (1);
+create table m1 (a int) engine=merge union=(t1);
+check table m1;
+Table Op Msg_type Msg_text
+test.m1 check status OK
+repair table m1;
+Table Op Msg_type Msg_text
+test.m1 repair note The storage engine for the table doesn't support repair
+checksum table m1;
+Table Checksum
+test.m1 3459908756
+drop tables t1, m1;
+create temporary table t1 (a int) engine=myisam;
+insert into t1 values (1);
+create temporary table m1 (a int) engine=merge union=(t1);
+check table m1;
+Table Op Msg_type Msg_text
+test.m1 check status OK
+repair table m1;
+Table Op Msg_type Msg_text
+test.m1 repair note The storage engine for the table doesn't support repair
+checksum table m1;
+Table Checksum
+test.m1 3459908756
+drop tables t1, m1;
+create table t1 (a int) engine=myisam;
+insert into t1 values (1);
+create temporary table m1 (a int) engine=merge union=(t1);
+check table m1;
+Table Op Msg_type Msg_text
+test.m1 check status OK
+repair table m1;
+Table Op Msg_type Msg_text
+test.m1 repair note The storage engine for the table doesn't support repair
+checksum table m1;
+Table Checksum
+test.m1 3459908756
+drop tables t1, m1;
+CREATE TABLE t1(a INT);
+CREATE TABLE m1(a INT) ENGINE = MERGE UNION (q1, q2);
+CREATE TRIGGER trg1 BEFORE DELETE ON t1
+FOR EACH ROW
+INSERT INTO m1 VALUES (1);
+DELETE FROM t1;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+DROP TRIGGER trg1;
+DROP TABLE t1;
+DROP TABLE m1;
+set global default_storage_engine=@save_default_storage_engine;
+#
+# MDEV-27407 Different ASC/DESC index attributes on MERGE and underlying table can cause wrong results
+#
+create table t (a int, key(a desc)) engine=myisam;
+create table tm (a int, key(a)) engine=merge union(t);
+select * from tm;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+drop table tm, t;
+#
+# MDEV-27586 Auto-increment does not work with DESC on MERGE table
+#
+create table t (a int not null, primary key(a desc)) engine=myisam;
+create table tm (a int not null auto_increment, primary key(a desc)) engine=merge union=(t) insert_method=first;
+insert into tm () values ();
+insert into tm () values ();
+insert into tm () values ();
+select * from tm;
+a
+3
+2
+1
+drop table tm, t;
+#
+# End of 10.8 tests
+#
+#
+# MDEV-30088 Assertion `cond_selectivity <= 1.0' failed in get_range_limit_read_cost
+#
+CREATE TABLE t1 (a TIMESTAMP, KEY(a)) ENGINE=MRG_MyISAM;
+explain SELECT a, COUNT(*) FROM t1 WHERE a >= '2000-01-01 00:00:00' GROUP BY a;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+SELECT a, COUNT(*) FROM t1 WHERE a >= '2000-01-01 00:00:00' GROUP BY a;
+a COUNT(*)
+DROP TABLE t1;
+#
+# MDEV-30525: Assertion `ranges > 0' fails in IO_AND_CPU_COST handler::keyread_time
+#
+CREATE TABLE t1 (a INT, KEY(a)) ENGINE=MyISAM;
+CREATE TABLE t2 (a INT, KEY(a)) ENGINE=MyISAM;
+CREATE TABLE tm (a INT, KEY(a)) ENGINE=MRG_MyISAM UNION=(t1,t2);
+SELECT DISTINCT a FROM tm WHERE a > 50;
+a
+DROP TABLE tm, t1, t2;
+# Testcase 2:
+CREATE TABLE t1 (a INT, KEY(a)) ENGINE=MyISAM;
+CREATE TABLE t2 (a INT, KEY(a)) ENGINE=MyISAM;
+CREATE TABLE tm (a INT, KEY(a)) ENGINE=MERGE UNION = (t1, t2) INSERT_METHOD=FIRST;
+ANALYZE TABLE tm PERSISTENT FOR ALL;
+Table Op Msg_type Msg_text
+test.tm analyze status Engine-independent statistics collected
+test.tm analyze note The storage engine for the table doesn't support analyze
+SELECT DISTINCT a FROM (SELECT * FROM tm WHERE a iS NOT NULL) AS sq;
+a
+DROP TABLE tm, t1, t2;
+#
+# MDEV-30568 Assertion `cond_selectivity <= 1.000000001' failed in get_range_limit_read_cost
+#
+CREATE TABLE t1 (f INT, KEY(f)) ENGINE=MyISAM;
+CREATE TABLE t2 (f INT, KEY(f)) ENGINE=MyISAM;
+CREATE TABLE tm (f INT, KEY(f)) ENGINE=MERGE UNION = (t1, t2);
+SELECT DISTINCT f FROM tm WHERE f IN (47, 126, 97, 48, 73, 0);
+f
+DROP TABLE tm, t1, t2;
+#
+# MDEV-30786 SIGFPE in cost_group_min_max on EXP
+#
+SET use_stat_tables='preferably';
+CREATE TABLE t1 (a INT,b INT,KEY i1 (a),KEY i2 (b)) ENGINE=MRG_MyISAM;
+ANALYZE LOCAL 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
+EXPLAIN SELECT DISTINCT a FROM t1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 range NULL i1 5 NULL 1 Using index for group-by
+drop table t1;
+set use_stat_tables=default;
+#
+# End of 11.0 tests
+#
+#
+# MDEV-29174: UPDATE of view that uses MERGE table
+#
+CREATE TABLE t1 (a int) ENGINE=MERGE;
+CREATE VIEW v1 AS SELECT a FROM t1;
+UPDATE v1 SET a=0;
+DROP VIEW v1;
+DROP TABLE t1;
+# End of 11.1 tests
diff --git a/mysql-test/suite/merge/merge.test b/mysql-test/suite/merge/merge.test
new file mode 100644
index 00000000000..f35a41a06b2
--- /dev/null
+++ b/mysql-test/suite/merge/merge.test
@@ -0,0 +1,2944 @@
+#
+# Test of MERGE TABLES
+#
+
+# Save the initial number of concurrent sessions.
+--source include/count_sessions.inc
+
+# MERGE tables require MyISAM tables
+set @save_default_storage_engine=@@global.default_storage_engine;
+set global default_storage_engine=myisam;
+set session default_storage_engine=myisam;
+
+# This test assumes a stable character set
+--source include/default_charset.inc
+
+let $MYSQLD_DATADIR= `select @@datadir`;
+create table t1 (a int not null primary key auto_increment, message char(20));
+create table t2 (a int not null primary key auto_increment, message char(20));
+INSERT INTO t1 (message) VALUES ("Testing"),("table"),("t1");
+INSERT INTO t2 (message) VALUES ("Testing"),("table"),("t2");
+create table t3 (a int not null, b char(20), key(a)) engine=MERGE UNION=(t1,t2);
+select * from t3;
+select * from t3 order by a desc;
+drop table t3;
+insert into t1 select NULL,message from t2;
+insert into t2 select NULL,message from t1;
+insert into t1 select NULL,message from t2;
+insert into t2 select NULL,message from t1;
+insert into t1 select NULL,message from t2;
+insert into t2 select NULL,message from t1;
+insert into t1 select NULL,message from t2;
+insert into t2 select NULL,message from t1;
+insert into t1 select NULL,message from t2;
+insert into t2 select NULL,message from t1;
+insert into t1 select NULL,message from t2;
+create table t3 (a int not null, b char(20), key(a)) engine=MERGE UNION=(test.t1,test.t2);
+explain select * from t3 where a < 10;
+explain select * from t3 where a > 10 and a < 20;
+select * from t3 where a = 10;
+select * from t3 where a < 10;
+select * from t3 where a > 10 and a < 20;
+explain select a from t3 order by a desc limit 10;
+select a from t3 order by a desc limit 10;
+select a from t3 order by a desc limit 300,10;
+delete from t3 where a=3;
+select * from t3 where a < 10;
+delete from t3 where a >= 6 and a <= 8;
+select * from t3 where a < 10;
+update t3 set a=3 where a=9;
+select * from t3 where a < 10;
+update t3 set a=6 where a=7;
+select * from t3 where a < 10;
+show create table t3;
+
+# The following should give errors
+create table t4 (a int not null, b char(10), key(a)) engine=MERGE UNION=(t1,t2);
+--error 1168
+select * from t4;
+--error 1168
+alter table t4 add column c int;
+flush tables;
+--error 1168
+select * from t4;
+
+#
+# Test tables in different databases
+#
+create database mysqltest;
+create table mysqltest.t6 (a int not null primary key auto_increment, message char(20));
+create table t5 (a int not null, b char(20), key(a)) engine=MERGE UNION=(test.t1,mysqltest.t6);
+show create table t5;
+alter table t5 engine=myisam;
+drop table t5, mysqltest.t6;
+drop database mysqltest;
+
+# Because of windows, it's important that we drop the merge tables first!
+drop table t4,t3,t1,t2;
+
+create table t1 (c char(10)) engine=myisam;
+create table t2 (c char(10)) engine=myisam;
+create table t3 (c char(10)) union=(t1,t2) engine=merge;
+insert into t1 (c) values ('test1');
+insert into t1 (c) values ('test1');
+insert into t1 (c) values ('test1');
+insert into t2 (c) values ('test2');
+insert into t2 (c) values ('test2');
+insert into t2 (c) values ('test2');
+select * from t3;
+select * from t3;
+delete from t3 where 1=1;
+select * from t3;
+select * from t1;
+drop table t3,t2,t1;
+
+#
+# Test 2
+#
+
+CREATE TABLE t1 (incr int not null, othr int not null, primary key(incr));
+CREATE TABLE t2 (incr int not null, othr int not null, primary key(incr));
+CREATE TABLE t3 (incr int not null, othr int not null, primary key(incr))
+ENGINE=MERGE UNION=(t1,t2);
+
+SELECT * from t3;
+
+INSERT INTO t1 VALUES ( 1,10),( 3,53),( 5,21),( 7,12),( 9,17);
+INSERT INTO t2 VALUES ( 2,24),( 4,33),( 6,41),( 8,26),( 0,32);
+INSERT INTO t1 VALUES (11,20),(13,43),(15,11),(17,22),(19,37);
+INSERT INTO t2 VALUES (12,25),(14,31),(16,42),(18,27),(10,30);
+
+SELECT * from t3 where incr in (1,2,3,4) order by othr;
+alter table t3 UNION=(t1);
+select count(*) from t3;
+alter table t3 UNION=(t1,t2);
+select count(*) from t3;
+alter table t3 ENGINE=MYISAM;
+select count(*) from t3;
+
+# Test that ALTER TABLE rembers the old UNION
+
+drop table t3;
+CREATE TABLE t3 (incr int not null, othr int not null, primary key(incr))
+ENGINE=MERGE UNION=(t1,t2);
+show create table t3;
+alter table t3 drop primary key;
+show create table t3;
+
+drop table t3,t2,t1;
+
+#
+# Test table without unions
+#
+create table t1 (a int not null, key(a)) engine=merge;
+select * from t1;
+drop table t1;
+
+#
+# Bug in flush tables combined with MERGE tables
+#
+
+create table t1 (a int not null, b int not null, key(a,b));
+create table t2 (a int not null, b int not null, key(a,b));
+create table t3 (a int not null, b int not null, key(a,b)) ENGINE=MERGE UNION=(t1,t2);
+insert into t1 values (1,2),(2,1),(0,0),(4,4),(5,5),(6,6);
+insert into t2 values (1,1),(2,2),(0,0),(4,4),(5,5),(6,6);
+flush tables;
+select * from t3 where a=1 order by b limit 2;
+drop table t3,t1,t2;
+
+#
+# [phi] testing INSERT_METHOD stuff
+#
+
+# first testing of common stuff with new parameters
+create table t1 (a int not null, b int not null auto_increment, primary key(a,b));
+create table t2 (a int not null, b int not null auto_increment, primary key(a,b));
+create table t3 (a int not null, b int not null, key(a,b)) UNION=(t1,t2) INSERT_METHOD=NO;
+create table t4 (a int not null, b int not null, key(a,b)) ENGINE=MERGE UNION=(t1,t2) INSERT_METHOD=NO;
+create table t5 (a int not null, b int not null auto_increment, primary key(a,b)) ENGINE=MERGE UNION=(t1,t2) INSERT_METHOD=FIRST;
+create table t6 (a int not null, b int not null auto_increment, primary key(a,b)) ENGINE=MERGE UNION=(t1,t2) INSERT_METHOD=LAST;
+show create table t3;
+show create table t4;
+show create table t5;
+show create table t6;
+insert into t1 values (1,NULL),(1,NULL),(1,NULL),(1,NULL);
+insert into t2 values (2,NULL),(2,NULL),(2,NULL),(2,NULL);
+select * from t3 order by b,a limit 3;
+select * from t4 order by b,a limit 3;
+select * from t5 order by b,a limit 3,3;
+select * from t6 order by b,a limit 6,3;
+# now testing inserts and where the data gets written
+insert into t5 values (5,1),(5,2);
+insert into t6 values (6,1),(6,2);
+select * from t1 order by a,b;
+select * from t2 order by a,b;
+select * from t4 order by a,b;
+# preperation for next test
+insert into t3 values (3,1),(3,2),(3,3),(3,4);
+select * from t3 order by a,b;
+# now testing whether options are kept by alter table
+alter table t4 UNION=(t1,t2,t3);
+show create table t4;
+select * from t4 order by a,b;
+# testing switching off insert method and inserts again
+alter table t4 INSERT_METHOD=FIRST;
+show create table t4;
+insert into t4 values (4,1),(4,2);
+select * from t1 order by a,b;
+select * from t2 order by a,b;
+select * from t3 order by a,b;
+select * from t4 order by a,b;
+select * from t5 order by a,b;
+# auto_increment
+select 1;
+insert into t5 values (1,NULL),(5,NULL);
+insert into t6 values (2,NULL),(6,NULL);
+select * from t1 order by a,b;
+select * from t2 order by a,b;
+select * from t5 order by a,b;
+select * from t6 order by a,b;
+insert into t1 values (99,NULL);
+select * from t4 where a+0 > 90;
+# bug#4008 - cannot determine a unique key that caused "dupl. key error"
+--error ER_DUP_ENTRY
+insert t5 values (1,1);
+--error ER_DUP_ENTRY
+insert t6 values (2,1);
+insert t5 values (1,1) on duplicate key update b=b+10;
+insert t6 values (2,1) on duplicate key update b=b+20;
+select * from t5 where a < 3;
+drop table t6, t5, t4, t3, t2, t1;
+
+CREATE TABLE t1 ( a int(11) NOT NULL default '0', b int(11) NOT NULL default '0', PRIMARY KEY (a,b)) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1,1), (2,1);
+CREATE TABLE t2 ( a int(11) NOT NULL default '0', b int(11) NOT NULL default '0', PRIMARY KEY (a,b)) ENGINE=MyISAM;
+INSERT INTO t2 VALUES (1,2), (2,2);
+CREATE TABLE t3 ( a int(11) NOT NULL default '0', b int(11) NOT NULL default '0', KEY a (a,b)) ENGINE=MRG_MyISAM UNION=(t1,t2);
+select max(b) from t3 where a = 2;
+select max(b) from t1 where a = 2;
+drop table t3,t1,t2;
+
+#
+# temporary merge tables
+#
+create table t1 (a int not null);
+create table t2 (a int not null);
+insert into t1 values (1);
+insert into t2 values (2);
+create temporary table t3 (a int not null) ENGINE=MERGE UNION=(t1,t2);
+select * from t3;
+create temporary table t4 (a int not null);
+create temporary table t5 (a int not null);
+insert into t4 values (1);
+insert into t5 values (2);
+create temporary table t6 (a int not null) ENGINE=MERGE UNION=(t4,t5);
+select * from t6;
+drop table t6, t3, t1, t2, t4, t5;
+#
+# Bug#19627 - temporary merge table locking
+# MERGE table and its children must match in temporary type.
+# Forbid temporary merge on non-temporary children: shown above.
+# Forbid non-temporary merge on temporary children:
+create temporary table t1 (a int not null);
+create temporary table t2 (a int not null);
+insert into t1 values (1);
+insert into t2 values (2);
+create table t3 (a int not null) ENGINE=MERGE UNION=(t1,t2);
+--error ER_WRONG_MRG_TABLE
+select * from t3;
+drop table t3, t2, t1;
+# Forbid children mismatch in temporary:
+create table t1 (a int not null);
+create temporary table t2 (a int not null);
+insert into t1 values (1);
+insert into t2 values (2);
+create table t3 (a int not null) ENGINE=MERGE UNION=(t1,t2);
+--error ER_WRONG_MRG_TABLE
+select * from t3;
+drop table t3;
+create temporary table t3 (a int not null) ENGINE=MERGE UNION=(t1,t2);
+select * from t3;
+drop table t3, t2, t1;
+--echo # CREATE...SELECT is not implemented for MERGE tables.
+CREATE TEMPORARY TABLE t1 (c1 INT NOT NULL);
+CREATE TEMPORARY TABLE t2 (c1 INT NOT NULL);
+CREATE TABLE t3 (c1 INT NOT NULL);
+INSERT INTO t3 VALUES (3), (33);
+LOCK TABLES t3 READ;
+--error ER_WRONG_OBJECT
+CREATE TEMPORARY TABLE t4 (c1 INT NOT NULL) ENGINE=MERGE UNION=(t1,t2)
+ INSERT_METHOD=LAST SELECT * FROM t3;
+--error ER_TABLE_NOT_LOCKED
+SELECT * FROM t4;
+UNLOCK TABLES;
+CREATE TEMPORARY TABLE t4 (c1 INT NOT NULL) ENGINE=MERGE UNION=(t1,t2)
+ INSERT_METHOD=LAST;
+INSERT INTO t4 SELECT * FROM t3;
+--echo # Alter temporary MERGE table.
+ALTER TABLE t4 UNION=(t1);
+LOCK TABLES t4 WRITE;
+--echo # Alter temporary MERGE table under LOCk tables.
+ALTER TABLE t4 UNION=(t1,t2);
+UNLOCK TABLES;
+--echo # MERGE table and function.
+CREATE FUNCTION f1 () RETURNS INT RETURN (SELECT max(c1) FROM t3);
+SELECT * FROM t4 WHERE c1 < f1();
+DROP FUNCTION f1;
+DROP TABLE t4, t3, t2, t1;
+
+#
+# testing merge::records_in_range and optimizer
+#
+
+CREATE TABLE t1 (
+ fileset_id tinyint(3) unsigned NOT NULL default '0',
+ file_code varchar(32) NOT NULL default '',
+ fileset_root_id tinyint(3) unsigned NOT NULL default '0',
+ PRIMARY KEY (fileset_id,file_code),
+ KEY files (fileset_id,fileset_root_id)
+) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (2, '0000000111', 1), (2, '0000000112', 1), (2, '0000000113', 1),
+(2, '0000000114', 1), (2, '0000000115', 1), (2, '0000000116', 1), (2, '0000000117', 1),
+(2, '0000000118', 1), (2, '0000000119', 1), (2, '0000000120', 1);
+CREATE TABLE t2 (
+ fileset_id tinyint(3) unsigned NOT NULL default '0',
+ file_code varchar(32) NOT NULL default '',
+ fileset_root_id tinyint(3) unsigned NOT NULL default '0',
+ PRIMARY KEY (fileset_id,file_code),
+ KEY files (fileset_id,fileset_root_id)
+) ENGINE=MRG_MyISAM UNION=(t1);
+
+EXPLAIN SELECT * FROM t2 IGNORE INDEX (files) WHERE fileset_id = 2
+AND file_code BETWEEN '0000000115' AND '0000000120' LIMIT 1;
+EXPLAIN SELECT * FROM t2 WHERE fileset_id = 2
+AND file_code BETWEEN '0000000115' AND '0000000120' LIMIT 1;
+EXPLAIN SELECT * FROM t1 WHERE fileset_id = 2
+AND file_code BETWEEN '0000000115' AND '0000000120' LIMIT 1;
+EXPLAIN SELECT * FROM t2 WHERE fileset_id = 2
+AND file_code = '0000000115' LIMIT 1;
+DROP TABLE t2, t1;
+
+#
+# Test of ORDER BY DESC on key (Bug #515)
+#
+
+create table t1 (x int, y int, index xy(x, y));
+create table t2 (x int, y int, index xy(x, y));
+create table t3 (x int, y int, index xy(x, y)) engine=merge union=(t1,t2);
+insert into t1 values(1, 2);
+insert into t2 values(1, 3);
+select * from t3 where x = 1 and y < 5 order by y;
+# Bug is that followng query returns empty set while it must be same as above
+select * from t3 where x = 1 and y < 5 order by y desc;
+drop table t1,t2,t3;
+
+#
+# Bug#5232: CREATE TABLE ... SELECT
+#
+
+create table t1 (a int);
+create table t2 (a int);
+insert into t1 values (0);
+insert into t2 values (1);
+--error ER_WRONG_OBJECT
+create table t3 engine=merge union=(t1, t2) select * from t1;
+--error ER_WRONG_OBJECT
+create table t3 engine=merge union=(t1, t2) select * from t2;
+--error ER_WRONG_OBJECT
+create table t3 engine=merge union=(t1, t2) select (select max(a) from t2);
+drop table t1, t2;
+
+#
+# Bug#9112 - Merge table with composite index producing invalid results with some queries
+# This test case will fail only without the bugfix and some
+# non-deterministic circumstances. It depends on properly initialized
+# "un-initialized" memory. At the time it happens with a standard
+# non-debug build. But there is no guarantee that this will be always so.
+#
+create table t1 (
+ a double(14,4),
+ b varchar(10),
+ index (a,b)
+) engine=merge union=(t2,t3);
+
+create table t2 (
+ a double(14,4),
+ b varchar(10),
+ index (a,b)
+) engine=myisam;
+
+create table t3 (
+ a double(14,4),
+ b varchar(10),
+ index (a,b)
+) engine=myisam;
+
+insert into t2 values ( null, '');
+insert into t2 values ( 9999999999.999, '');
+insert into t3 select * from t2;
+select min(a), max(a) from t1;
+flush tables;
+select min(a), max(a) from t1;
+drop table t1, t2, t3;
+# BUG#6699 : no sorting on 'ref' retrieval
+create table t1 (a int,b int,c int, index (a,b,c));
+create table t2 (a int,b int,c int, index (a,b,c));
+create table t3 (a int,b int,c int, index (a,b,c))
+ engine=merge union=(t1 ,t2);
+insert into t1 (a,b,c) values (1,1,0),(1,2,0);
+insert into t2 (a,b,c) values (1,1,1),(1,2,1);
+
+explain select a,b,c from t3 force index (a) where a=1 order by a,b,c;
+select a,b,c from t3 force index (a) where a=1 order by a,b,c;
+
+# this actually wasn't affected:
+explain select a,b,c from t3 force index (a) where a=1 order by a desc, b desc, c desc;
+select a,b,c from t3 force index (a) where a=1 order by a desc, b desc, c desc;
+
+# BUG#7377 SHOW index on MERGE table crashes debug server
+show index from t3;
+
+drop table t1, t2, t3;
+
+#
+# Bug#10400 - Improperly-defined MERGE table crashes with INSERT ... ON DUPLICATE KEY UPDATE
+#
+CREATE TABLE t1 ( a INT AUTO_INCREMENT PRIMARY KEY, b VARCHAR(10), UNIQUE (b) )
+ ENGINE=MyISAM;
+CREATE TABLE t2 ( a INT AUTO_INCREMENT, b VARCHAR(10), INDEX (a), INDEX (b) )
+ ENGINE=MERGE UNION (t1) INSERT_METHOD=FIRST;
+INSERT INTO t2 (b) VALUES (1) ON DUPLICATE KEY UPDATE b=2;
+INSERT INTO t2 (b) VALUES (1) ON DUPLICATE KEY UPDATE b=3;
+SELECT b FROM t2;
+DROP TABLE t1, t2;
+
+
+#
+# BUG#5390 - problems with merge tables
+# Problem #1: INSERT...SELECT
+#
+#drop table if exists t1, t2, t3;
+create table t1(a int);
+create table t2(a int);
+insert into t1 values (1);
+insert into t2 values (2);
+create table t3 (a int) engine=merge union=(t1, t2) insert_method=first;
+select * from t3;
+#
+insert t2 select * from t2;
+select * from t2;
+#
+insert t3 select * from t1;
+select * from t3;
+#
+insert t1 select * from t3;
+select * from t1;
+select * from t2;
+select * from t3;
+check table t1, t2;
+drop table t1, t2, t3;
+
+#
+# BUG#21617 - crash when selecting from merge table with inconsistent
+# indexes
+#
+CREATE TABLE t1(a INT);
+INSERT INTO t1 VALUES(2),(1);
+CREATE TABLE t2(a INT, KEY(a)) ENGINE=MERGE UNION=(t1);
+--error 1168
+SELECT * FROM t2 WHERE a=2;
+DROP TABLE t1, t2;
+
+#
+# BUG#10974 - No error message if merge table based on union of innodb,
+# memory
+#
+CREATE TABLE t1(a INT) ENGINE=MEMORY;
+CREATE TABLE t2(a INT) ENGINE=MERGE UNION=(t1);
+--error 1168
+SELECT * FROM t2;
+DROP TABLE t1, t2;
+CREATE TABLE t2(a INT) ENGINE=MERGE UNION=(t3);
+--error ER_WRONG_MRG_TABLE
+SELECT * FROM t2;
+DROP TABLE t2;
+
+#
+# Underlying table definition conformance tests.
+#
+CREATE TABLE t1(a INT, b TEXT);
+CREATE TABLE tm1(a TEXT, b INT) ENGINE=MERGE UNION=(t1);
+--error 1168
+SELECT * FROM tm1;
+DROP TABLE t1, tm1;
+
+CREATE TABLE t1(a SMALLINT, b SMALLINT);
+CREATE TABLE tm1(a INT) ENGINE=MERGE UNION=(t1);
+--error 1168
+SELECT * FROM tm1;
+DROP TABLE t1, tm1;
+
+CREATE TABLE t1(a SMALLINT, b SMALLINT, KEY(a, b));
+CREATE TABLE tm1(a SMALLINT, b SMALLINT, KEY(a)) ENGINE=MERGE UNION=(t1);
+--error 1168
+SELECT * FROM tm1;
+DROP TABLE t1, tm1;
+
+CREATE TABLE t1(a SMALLINT, b SMALLINT, KEY(b));
+CREATE TABLE tm1(a SMALLINT, b SMALLINT, KEY(a)) ENGINE=MERGE UNION=(t1);
+--error 1168
+SELECT * FROM tm1;
+DROP TABLE t1, tm1;
+
+
+# BUG#26881 - Large MERGE tables report incorrect specification when no
+# differences in tables
+#
+CREATE TABLE t1(c1 VARCHAR(1));
+CREATE TABLE m1 LIKE t1;
+ALTER TABLE m1 ENGINE=MERGE UNION=(t1);
+SELECT * FROM m1;
+DROP TABLE t1, m1;
+
+CREATE TABLE t1(c1 VARCHAR(4), c2 TINYINT, c3 TINYINT, c4 TINYINT,
+ c5 TINYINT, c6 TINYINT, c7 TINYINT, c8 TINYINT, c9 TINYINT);
+CREATE TABLE m1 LIKE t1;
+ALTER TABLE m1 ENGINE=MERGE UNION=(t1);
+SELECT * FROM m1;
+DROP TABLE t1, m1;
+
+#
+# BUG#24342 - Incorrect results with query over MERGE table
+#
+CREATE TABLE t1 (a VARCHAR(255) CHARACTER SET latin1 COLLATE latin1_german2_ci,
+ b INT, INDEX(a,b));
+CREATE TABLE t2 LIKE t1;
+CREATE TABLE t3 LIKE t1;
+ALTER TABLE t3 ENGINE=MERGE UNION=(t1,t2);
+INSERT INTO t1 VALUES ('ss',1);
+INSERT INTO t2 VALUES ('ss',2),(0xDF,2);
+SELECT COUNT(*) FROM t3 WHERE a=0xDF AND b=2;
+DROP TABLE t1,t2,t3;
+
+# End of 4.1 tests
+
+#
+# BUG#19648 - Merge table does not work with bit types
+#
+create table t1 (b bit(1));
+create table t2 (b bit(1));
+create table tm (b bit(1)) engine = merge union = (t1,t2);
+select * from tm;
+drop table tm, t1, t2;
+
+#
+# Bug #17766: The server accepts to create MERGE tables which cannot work
+#
+create table t1 (a int) insert_method = last engine = merge;
+--error ER_OPEN_AS_READONLY
+insert into t1 values (1);
+create table t2 (a int) engine = myisam;
+alter table t1 union (t2);
+insert into t1 values (1);
+alter table t1 insert_method = no;
+--error ER_OPEN_AS_READONLY
+insert into t1 values (1);
+drop table t2;
+drop table t1;
+
+#
+# BUG#26976 - Missing table in merge not noted in related error msg + SHOW
+# CREATE TABLE fails
+#
+CREATE TABLE tm1(a INT) ENGINE=MERGE UNION=(t1, t2);
+--error ER_WRONG_MRG_TABLE
+SELECT * FROM tm1;
+CHECK TABLE tm1;
+CREATE TABLE t1(a INT);
+--error ER_WRONG_MRG_TABLE
+SELECT * FROM tm1;
+CHECK TABLE tm1;
+CREATE TABLE t2(a BLOB);
+--error ER_WRONG_MRG_TABLE
+SELECT * FROM tm1;
+CHECK TABLE tm1;
+ALTER TABLE t2 MODIFY a INT;
+SELECT * FROM tm1;
+CHECK TABLE tm1;
+DROP TABLE tm1, t1, t2;
+
+#
+# Bug#15522 - create ... select and with merge tables
+#
+# This was fixed together with Bug#20662 (Infinite loop in CREATE TABLE
+# IF NOT EXISTS ... SELECT with locked tables).
+# The new behavior for MERGE tables is consistent with the
+# CREATE TABLE SELECT behavior for ordinary tables.
+#
+CREATE TABLE t1(c1 INT);
+CREATE TABLE t2 (c1 INT) ENGINE=MERGE UNION=(t1) INSERT_METHOD=FIRST;
+# After WL#5370, it just generates a warning that the table already exists
+CREATE TABLE IF NOT EXISTS t1 SELECT * FROM t2;
+DROP TABLE t1, t2;
+
+#
+# Bug #28837: MyISAM storage engine error (134) doing delete with self-join
+#
+
+CREATE TABLE t1 (id INT NOT NULL, ref INT NOT NULL, INDEX (id)) ENGINE=MyISAM;
+CREATE TABLE t2 LIKE t1;
+
+INSERT INTO t2 (id, ref) VALUES (1,3), (2,1), (3,2), (4,5), (4,4);
+INSERT INTO t1 SELECT * FROM t2;
+INSERT INTO t1 SELECT * FROM t2;
+
+CREATE TABLE t3 (id INT NOT NULL, ref INT NOT NULL, INDEX (id)) ENGINE=MERGE
+ UNION(t1);
+
+SELECT * FROM t3 AS a INNER JOIN t3 AS b USING (id) WHERE a.ref < b.ref;
+SELECT * FROM t3;
+DELETE FROM a USING t3 AS a INNER JOIN t3 AS b USING (id) WHERE a.ref < b.ref;
+SELECT * FROM t3;
+
+DROP TABLE t1, t2, t3;
+
+#
+# BUG#28248 - mysqldump results with MERGE ... UNION=() cannot be executed
+#
+CREATE TABLE t1(a INT);
+CREATE TABLE m1(a INT) ENGINE=MERGE;
+SHOW CREATE TABLE m1;
+DROP TABLE m1;
+CREATE TABLE m1(a INT) ENGINE=MERGE UNION=();
+SHOW CREATE TABLE m1;
+ALTER TABLE m1 UNION=(t1);
+ALTER TABLE m1 UNION=();
+SHOW CREATE TABLE m1;
+DROP TABLE t1, m1;
+
+#
+# BUG#32047 - 'Spurious' errors while opening MERGE tables
+#
+CREATE TABLE t1(a INT);
+CREATE TABLE t2(a VARCHAR(10));
+CREATE TABLE m1(a INT) ENGINE=MERGE UNION=(t1, t2);
+CREATE TABLE m2(a INT) ENGINE=MERGE UNION=(t1);
+SELECT * FROM t1;
+--error ER_WRONG_MRG_TABLE
+SELECT * FROM m1;
+SELECT * FROM m2;
+DROP TABLE t1, t2, m1, m2;
+
+--echo End of 5.0 tests
+
+
+#
+# Bug #8306: TRUNCATE leads to index corruption
+#
+create table t1 (c1 int, index(c1));
+create table t2 (c1 int, index(c1)) engine=merge union=(t1);
+insert into t1 values (1);
+# Close all tables.
+flush tables;
+# Open t2 and (implicitly) t1.
+select * from t2;
+# Truncate after flush works (unless another threads reopens t2 in between).
+flush tables;
+truncate table t1;
+insert into t1 values (1);
+# Close all tables.
+flush tables;
+# Open t2 and (implicitly) t1.
+select * from t2;
+# Truncate t1, which was not recognized as open without the bugfix.
+# After fix for Bug#8306 and before fix for Bug#26379,
+# it should fail with a table-in-use error message, otherwise succeed.
+truncate table t1;
+# The insert used to fail on the crashed table.
+insert into t1 values (1);
+drop table t1,t2;
+--echo #
+--echo # Extra tests for TRUNCATE.
+--echo #
+--echo # Truncate MERGE table.
+CREATE TABLE t1 (c1 INT, INDEX(c1));
+CREATE TABLE t2 (c1 INT, INDEX(c1));
+CREATE TABLE t3 (c1 INT, INDEX(c1)) ENGINE=MRG_MYISAM UNION=(t1,t2);
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2);
+SELECT * FROM t3;
+TRUNCATE TABLE t3;
+SELECT * FROM t3;
+--echo #
+--echo # Truncate child table.
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2);
+TRUNCATE TABLE t1;
+SELECT * FROM t3;
+--echo #
+--echo # Truncate MERGE table under locked tables.
+LOCK TABLE t1 WRITE, t2 WRITE, t3 WRITE;
+INSERT INTO t1 VALUES (1);
+TRUNCATE TABLE t3;
+SELECT * FROM t3;
+UNLOCK TABLES;
+SELECT * FROM t1;
+SELECT * FROM t2;
+--echo #
+--echo # Truncate child table under locked tables.
+LOCK TABLE t1 WRITE, t2 WRITE, t3 WRITE;
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2);
+TRUNCATE TABLE t1;
+SELECT * FROM t3;
+UNLOCK TABLES;
+DROP TABLE t1, t2, t3;
+--echo #
+--echo # Truncate temporary MERGE table.
+CREATE TEMPORARY TABLE t1 (c1 INT, INDEX(c1));
+CREATE TEMPORARY TABLE t2 (c1 INT, INDEX(c1));
+CREATE TEMPORARY TABLE t3 (c1 INT, INDEX(c1)) ENGINE=MRG_MYISAM UNION=(t1,t2);
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2);
+SELECT * FROM t3;
+TRUNCATE TABLE t3;
+SELECT * FROM t3;
+--echo #
+--echo # Truncate temporary child table.
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2);
+TRUNCATE TABLE t1;
+SELECT * FROM t3;
+--echo #
+--echo # Truncate temporary MERGE table under locked tables.
+INSERT INTO t1 VALUES (1);
+CREATE TABLE t4 (c1 INT, INDEX(c1));
+LOCK TABLE t4 WRITE;
+TRUNCATE TABLE t3;
+SELECT * FROM t3;
+SELECT * FROM t1;
+SELECT * FROM t2;
+--echo #
+--echo # Truncate temporary child table under locked tables.
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2);
+TRUNCATE TABLE t1;
+SELECT * FROM t3;
+SELECT * FROM t1;
+SELECT * FROM t2;
+UNLOCK TABLES;
+DROP TABLE t1, t2, t3, t4;
+
+#
+# Bug#26379 - Combination of FLUSH TABLE and REPAIR TABLE corrupts a MERGE table
+# Preparation
+connect (con1,localhost,root,,);
+connect (con2,localhost,root,,);
+connection default;
+#
+# Bug#26379 - Combination of FLUSH TABLE and REPAIR TABLE corrupts a MERGE table
+# Problem #1
+# A thread trying to lock a MERGE table performed busy waiting while
+# REPAIR TABLE or a similar table administration task was ongoing on one or
+# more of its MyISAM tables.
+# To allow for observability it was necessary to enter a multi-second sleep
+# in mysql_admin_table() after remove_table_from_cache(), which comes after
+# mysql_abort_lock(). The sleep faked a long running operation. One could
+# watch a high CPU load during the sleep time.
+# The problem was that mysql_abort_lock() upgrades the write lock to
+# TL_WRITE_ONLY. This lock type persisted until the final unlock at the end
+# of the administration task. The effect of TL_WRITE_ONLY is to reject any
+# attempt to lock the table. The trying thread must close the table and wait
+# until it is no longer used. Unfortunately there is no way to detect that
+# one of the MyISAM tables of a MERGE table is in use. When trying to lock
+# the MERGE table, all MyISAM tables are locked. If one fails on
+# TL_WRITE_ONLY, all locks are aborted and wait_for_tables() is entered.
+# But this doesn't see the MERGE table as used, so it seems appropriate to
+# retry a lock...
+#
+CREATE TABLE t1 (c1 INT) ENGINE= MyISAM;
+CREATE TABLE t2 (c1 INT) ENGINE= MRG_MYISAM UNION= (t1) INSERT_METHOD= LAST;
+send REPAIR TABLE t1;
+ connection con1;
+ sleep 1; # let repair run into its sleep
+ INSERT INTO t2 VALUES (1);
+connection default;
+reap;
+DROP TABLE t1, t2;
+#
+# Bug#26379 - Combination of FLUSH TABLE and REPAIR TABLE corrupts a MERGE table
+# Problem #2
+# A thread trying to lock a MERGE table performed busy waiting until all
+# threads that did REPAIR TABLE or similar table administration tasks on
+# one or more of its MyISAM tables in LOCK TABLES segments did
+# UNLOCK TABLES.
+# The difference against problem #1 is that the busy waiting took place
+# *after* the administration task. It was terminated by UNLOCK TABLES only.
+#
+# This is the same test case as for
+# Bug#26867 - LOCK TABLES REPAIR + merge table result in memory/cpu hogging
+#
+#
+CREATE TABLE t1 (c1 INT) ENGINE= MyISAM;
+CREATE TABLE t2 (c1 INT) ENGINE= MRG_MYISAM UNION= (t1) INSERT_METHOD= LAST;
+LOCK TABLE t1 WRITE;
+ connection con1;
+ send INSERT INTO t2 VALUES (1);
+connection default;
+sleep 1; # Let INSERT go into thr_multi_lock().
+REPAIR TABLE t1;
+sleep 2; # con1 performs busy waiting during this sleep.
+UNLOCK TABLES;
+ connection con1;
+ reap;
+connection default;
+DROP TABLE t1, t2;
+#
+# Bug#26379 - Combination of FLUSH TABLE and REPAIR TABLE corrupts a MERGE table
+# Problem #3
+# Two FLUSH TABLES within a LOCK TABLES segment could invalidate the lock.
+# This did *not* require a MERGE table.
+# To increase reproducibility it was necessary to enter a sleep of 2 seconds
+# at the end of wait_for_tables() after unlock of LOCK_open. In 5.0 and 5.1
+# the sleep must be inserted in open_and_lock_tables() after open_tables()
+# instead. wait_for_tables() is not used in this case.
+# The problem was that FLUSH TABLES releases LOCK_open while having unlocked
+# and closed all tables. When this happened while a thread was in the loop in
+# mysql_lock_tables() right after wait_for_tables() and before retrying to
+# lock, the thread got the lock. (Translate to similar code places in 5.0
+# and 5.1). And it did not notice that the table needed a refresh. So it
+# executed its statement on the table.
+# The first FLUSH TABLES kicked the INSERT out of thr_multi_lock() and let
+# it wait in wait_for_tables(). (open_table() in 5.0 and 5.1). The second
+# FLUSH TABLES must happen while the INSERT was on its way from
+# wait_for_tables() to the next call of thr_multi_lock(). This needed to be
+# supported by a sleep to make it repeatable.
+#
+CREATE TABLE t1 (c1 INT) ENGINE= MyISAM;
+LOCK TABLE t1 WRITE;
+ connection con1;
+ send INSERT INTO t1 VALUES (1);
+connection default;
+sleep 1; # Let INSERT go into thr_multi_lock().
+FLUSH TABLES;
+sleep 1; # Let INSERT go through wait_for_tables() where it sleeps.
+FLUSH TABLES;
+# This should give no result. But it will with sleep(2) at the right place.
+SELECT * FROM t1;
+UNLOCK TABLES;
+ connection con1;
+ reap;
+connection default;
+DROP TABLE t1;
+#
+# Bug#26379 - Combination of FLUSH TABLE and REPAIR TABLE corrupts a MERGE table
+# Cleanup
+disconnect con1;
+disconnect con2;
+#
+--echo #
+--echo # Extra tests for Bug#26379 - Combination of FLUSH TABLE and
+--echo # REPAIR TABLE corrupts a MERGE table
+#
+--echo #
+--echo # CREATE ... SELECT is disabled for MERGE tables.
+--echo #
+CREATE TABLE t1(c1 INT);
+INSERT INTO t1 VALUES (1);
+CREATE TABLE t2 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1) INSERT_METHOD=LAST;
+--error ER_OPEN_AS_READONLY
+CREATE TABLE t3 ENGINE=MRG_MYISAM INSERT_METHOD=LAST SELECT * FROM t2;
+--error ER_NO_SUCH_TABLE
+SHOW CREATE TABLE t3;
+--error ER_WRONG_OBJECT
+CREATE TABLE t3 ENGINE=MRG_MYISAM UNION=(t1) INSERT_METHOD=LAST
+ SELECT * FROM t2;
+--error ER_NO_SUCH_TABLE
+SHOW CREATE TABLE t3;
+DROP TABLE t1, t2;
+#
+--echo #
+--echo # Bug#37371 "CREATE TABLE LIKE merge loses UNION parameter"
+--echo # Demonstrate that this is no longer the case.
+--echo #
+--echo # 1. Create like.
+CREATE TABLE t1 (c1 INT);
+CREATE TABLE t2 (c1 INT);
+CREATE TABLE t3 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1,t2)
+ INSERT_METHOD=LAST;
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2);
+INSERT INTO t3 VALUES (3);
+CREATE TABLE t4 LIKE t3;
+SHOW CREATE TABLE t4;
+INSERT INTO t4 VALUES (4);
+DROP TABLE t4;
+--echo #
+--echo # 1. Create like with locked tables.
+LOCK TABLES t3 WRITE, t2 WRITE, t1 WRITE;
+--error ER_TABLE_NOT_LOCKED
+CREATE TABLE t4 LIKE t3;
+--error ER_TABLE_NOT_LOCKED
+SHOW CREATE TABLE t4;
+--error ER_TABLE_NOT_LOCKED
+INSERT INTO t4 VALUES (4);
+--echo # Temporary tables can be created in spite of LOCK TABLES.
+--echo # If the temporary MERGE table uses the locked children only,
+--echo # it can even be used.
+CREATE TEMPORARY TABLE t4 LIKE t3;
+SHOW CREATE TABLE t4;
+INSERT INTO t4 VALUES (4);
+UNLOCK TABLES;
+INSERT INTO t4 VALUES (4);
+DROP TABLE t4;
+#
+--echo #
+--echo # Rename child.
+--echo #
+--echo # 1. Normal rename of non-MERGE table.
+CREATE TABLE t4 (c1 INT);
+INSERT INTO t4 VALUES (4);
+SELECT * FROM t4 ORDER BY c1;
+RENAME TABLE t4 TO t5;
+SELECT * FROM t5 ORDER BY c1;
+RENAME TABLE t5 TO t4;
+SELECT * FROM t4 ORDER BY c1;
+DROP TABLE t4;
+--echo #
+--echo # 2. Normal rename.
+SELECT * FROM t3 ORDER BY c1;
+RENAME TABLE t2 TO t5;
+--error ER_WRONG_MRG_TABLE
+SELECT * FROM t3 ORDER BY c1;
+RENAME TABLE t5 TO t2;
+SELECT * FROM t3 ORDER BY c1;
+--echo #
+--echo # 3. Normal rename with locked tables.
+LOCK TABLES t1 WRITE, t2 WRITE, t3 WRITE;
+SELECT * FROM t3 ORDER BY c1;
+--error ER_LOCK_OR_ACTIVE_TRANSACTION
+RENAME TABLE t2 TO t5;
+SELECT * FROM t3 ORDER BY c1;
+--error ER_LOCK_OR_ACTIVE_TRANSACTION
+RENAME TABLE t5 TO t2;
+SELECT * FROM t3 ORDER BY c1;
+UNLOCK TABLES;
+--echo #
+--echo # 4. Alter table rename.
+ALTER TABLE t2 RENAME TO t5;
+--error ER_WRONG_MRG_TABLE
+SELECT * FROM t3 ORDER BY c1;
+ALTER TABLE t5 RENAME TO t2;
+SELECT * FROM t3 ORDER BY c1;
+--echo #
+--echo # 5. Alter table rename with locked tables.
+LOCK TABLES t1 WRITE, t2 WRITE, t3 WRITE;
+ALTER TABLE t2 RENAME TO t5;
+--error ER_TABLE_NOT_LOCKED
+SELECT * FROM t3 ORDER BY c1;
+--error ER_TABLE_NOT_LOCKED
+ALTER TABLE t5 RENAME TO t2;
+UNLOCK TABLES;
+ALTER TABLE t5 RENAME TO t2;
+SELECT * FROM t3 ORDER BY c1;
+#
+--echo #
+--echo # Rename parent.
+--echo #
+--echo # 1. Normal rename with locked tables.
+LOCK TABLES t1 WRITE, t2 WRITE, t3 WRITE;
+SELECT * FROM t3 ORDER BY c1;
+--error ER_LOCK_OR_ACTIVE_TRANSACTION
+RENAME TABLE t3 TO t5;
+SELECT * FROM t3 ORDER BY c1;
+--error ER_LOCK_OR_ACTIVE_TRANSACTION
+RENAME TABLE t5 TO t3;
+SELECT * FROM t3 ORDER BY c1;
+--echo #
+--echo # 5. Alter table rename with locked tables.
+ALTER TABLE t3 RENAME TO t5;
+--error ER_TABLE_NOT_LOCKED
+SELECT * FROM t5 ORDER BY c1;
+--error ER_TABLE_NOT_LOCKED
+ALTER TABLE t5 RENAME TO t3;
+UNLOCK TABLES;
+ALTER TABLE t5 RENAME TO t3;
+SELECT * FROM t3 ORDER BY c1;
+DROP TABLE t1, t2, t3;
+#
+--echo #
+--echo # Drop locked tables.
+--echo #
+--echo # 1. Drop parent.
+CREATE TABLE t1 (c1 INT, INDEX(c1));
+CREATE TABLE t2 (c1 INT, INDEX(c1)) ENGINE=MRG_MYISAM UNION=(t1)
+ INSERT_METHOD=LAST;
+LOCK TABLES t1 WRITE, t2 WRITE;
+INSERT INTO t1 VALUES (1);
+DROP TABLE t2;
+--error ER_TABLE_NOT_LOCKED
+SELECT * FROM t2;
+SELECT * FROM t1;
+UNLOCK TABLES;
+--echo # 2. Drop child.
+CREATE TABLE t2 (c1 INT, INDEX(c1)) ENGINE=MRG_MYISAM UNION=(t1)
+ INSERT_METHOD=LAST;
+LOCK TABLES t1 WRITE, t2 WRITE;
+INSERT INTO t1 VALUES (1);
+DROP TABLE t1;
+--error ER_TABLE_NOT_LOCKED
+SELECT * FROM t2;
+--error ER_TABLE_NOT_LOCKED
+SELECT * FROM t1;
+UNLOCK TABLES;
+DROP TABLE t2;
+#
+--echo #
+--echo # ALTER TABLE. Change child list.
+--echo #
+CREATE TABLE t1 (c1 INT, INDEX(c1));
+CREATE TABLE t2 (c1 INT, INDEX(c1));
+CREATE TABLE t3 (c1 INT, INDEX(c1));
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2);
+INSERT INTO t3 VALUES (3);
+CREATE TABLE t4 (c1 INT, INDEX(c1)) ENGINE=MRG_MYISAM UNION=(t3,t2)
+ INSERT_METHOD=LAST;
+--echo # Shrink child list.
+ALTER TABLE t4 UNION=(t3);
+SHOW CREATE TABLE t4;
+SELECT * FROM t4 ORDER BY c1;
+--echo # Extend child list.
+ALTER TABLE t4 UNION=(t3,t2);
+SHOW CREATE TABLE t4;
+SELECT * FROM t4 ORDER BY c1;
+#
+--echo #
+--echo # ALTER TABLE under LOCK TABLES. Change child list.
+--echo #
+LOCK TABLES t4 WRITE, t3 WRITE, t2 WRITE;
+--echo # Shrink child list.
+--error ER_LOCK_OR_ACTIVE_TRANSACTION
+ALTER TABLE t4 UNION=(t3);
+--echo # Extend child list within locked tables.
+--error ER_LOCK_OR_ACTIVE_TRANSACTION
+ALTER TABLE t4 UNION=(t3,t2);
+--echo # Extend child list beyond locked tables.
+--error ER_LOCK_OR_ACTIVE_TRANSACTION
+ALTER TABLE t4 UNION=(t3,t2,t1);
+SHOW CREATE TABLE t4;
+SELECT * FROM t4 ORDER BY c1;
+UNLOCK TABLES;
+DROP TABLE t4;
+#
+--echo #
+--echo # ALTER TABLE under LOCK TABLES. Grave change, table re-creation.
+--echo #
+CREATE TABLE t4 (c1 INT, INDEX(c1)) ENGINE=MRG_MYISAM UNION=(t1,t2,t3)
+ INSERT_METHOD=LAST;
+--echo # Lock parent first and then children.
+LOCK TABLES t4 WRITE, t3 WRITE, t2 WRITE, t1 WRITE;
+ALTER TABLE t4 DROP INDEX c1, ADD UNIQUE INDEX (c1);
+SELECT * FROM t4 ORDER BY c1;
+ALTER TABLE t2 DROP INDEX c1, ADD UNIQUE INDEX (c1);
+SELECT * FROM t4 ORDER BY c1;
+UNLOCK TABLES;
+--echo # Lock children first and then parent.
+LOCK TABLES t1 WRITE, t2 WRITE, t3 WRITE, t4 WRITE;
+ALTER TABLE t4 DROP INDEX c1, ADD UNIQUE INDEX (c1);
+SELECT * FROM t4 ORDER BY c1;
+ALTER TABLE t2 DROP INDEX c1, ADD UNIQUE INDEX (c1);
+SELECT * FROM t4 ORDER BY c1;
+UNLOCK TABLES;
+--echo # Lock parent between children.
+LOCK TABLES t3 WRITE, t2 WRITE, t4 WRITE, t1 WRITE;
+ALTER TABLE t4 DROP INDEX c1, ADD UNIQUE INDEX (c1);
+SELECT * FROM t4 ORDER BY c1;
+ALTER TABLE t2 DROP INDEX c1, ADD UNIQUE INDEX (c1);
+SELECT * FROM t4 ORDER BY c1;
+UNLOCK TABLES;
+DROP TABLE t1, t2, t3, t4;
+#
+--echo #
+--echo # ALTER TABLE under LOCK TABLES. Simple change, no re-creation.
+--echo #
+CREATE TABLE t1 (c1 INT);
+CREATE TABLE t2 (c1 INT);
+CREATE TABLE t3 (c1 INT);
+CREATE TABLE t4 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1,t2,t3)
+ INSERT_METHOD=LAST;
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2);
+INSERT INTO t3 VALUES (3);
+--echo # Lock parent first and then children.
+LOCK TABLES t4 WRITE, t3 WRITE, t2 WRITE, t1 WRITE;
+ALTER TABLE t4 ALTER COLUMN c1 SET DEFAULT 44;
+SELECT * FROM t4 ORDER BY c1;
+ALTER TABLE t2 ALTER COLUMN c1 SET DEFAULT 22;
+SELECT * FROM t4 ORDER BY c1;
+UNLOCK TABLES;
+--echo # Lock children first and then parent.
+LOCK TABLES t1 WRITE, t2 WRITE, t3 WRITE, t4 WRITE;
+ALTER TABLE t4 ALTER COLUMN c1 SET DEFAULT 44;
+SELECT * FROM t4 ORDER BY c1;
+ALTER TABLE t2 ALTER COLUMN c1 SET DEFAULT 22;
+SELECT * FROM t4 ORDER BY c1;
+UNLOCK TABLES;
+--echo # Lock parent between children.
+LOCK TABLES t3 WRITE, t2 WRITE, t4 WRITE, t1 WRITE;
+ALTER TABLE t4 ALTER COLUMN c1 SET DEFAULT 44;
+SELECT * FROM t4 ORDER BY c1;
+ALTER TABLE t2 ALTER COLUMN c1 SET DEFAULT 22;
+SELECT * FROM t4 ORDER BY c1;
+UNLOCK TABLES;
+#
+--echo #
+--echo # FLUSH TABLE under LOCK TABLES.
+--echo #
+--echo # Lock parent first and then children.
+LOCK TABLES t4 WRITE, t3 WRITE, t2 WRITE, t1 WRITE;
+FLUSH TABLE t4;
+SELECT * FROM t4 ORDER BY c1;
+FLUSH TABLE t2;
+SELECT * FROM t4 ORDER BY c1;
+FLUSH TABLES;
+SELECT * FROM t4 ORDER BY c1;
+UNLOCK TABLES;
+--echo # Lock children first and then parent.
+LOCK TABLES t1 WRITE, t2 WRITE, t3 WRITE, t4 WRITE;
+FLUSH TABLE t4;
+SELECT * FROM t4 ORDER BY c1;
+FLUSH TABLE t2;
+SELECT * FROM t4 ORDER BY c1;
+FLUSH TABLES;
+SELECT * FROM t4 ORDER BY c1;
+UNLOCK TABLES;
+--echo # Lock parent between children.
+LOCK TABLES t3 WRITE, t2 WRITE, t4 WRITE, t1 WRITE;
+FLUSH TABLE t4;
+SELECT * FROM t4 ORDER BY c1;
+FLUSH TABLE t2;
+SELECT * FROM t4 ORDER BY c1;
+FLUSH TABLES;
+SELECT * FROM t4 ORDER BY c1;
+UNLOCK TABLES;
+#
+--echo #
+--echo # Triggers
+--echo #
+--echo # Trigger on parent
+DELETE FROM t4 WHERE c1 = 4;
+CREATE TRIGGER t4_ai1 AFTER INSERT ON t4 FOR EACH ROW SET @a=1;
+SET @a=0;
+INSERT INTO t4 VALUES (4);
+SELECT @a;
+SELECT * FROM t4 ORDER BY c1;
+DROP TRIGGER t4_ai1;
+CHECK TABLE t3;
+--echo # Trigger on parent under LOCK TABLES
+LOCK TABLES t3 WRITE, t2 WRITE, t4 WRITE, t1 WRITE;
+CREATE TRIGGER t4_ai2 AFTER INSERT ON t4 FOR EACH ROW SET @a=1;
+SET @a=0;
+INSERT INTO t4 VALUES (4);
+SELECT @a;
+SELECT * FROM t4 ORDER BY c1;
+DROP TRIGGER t4_ai2;
+UNLOCK TABLES;
+CHECK TABLE t3;
+--echo #
+--echo # Trigger on child
+DELETE FROM t4 WHERE c1 = 4;
+CREATE TRIGGER t3_ai3 AFTER INSERT ON t3 FOR EACH ROW SET @a=1;
+SET @a=0;
+INSERT INTO t4 VALUES (4);
+SELECT @a;
+INSERT INTO t3 VALUES (33);
+SELECT @a;
+SELECT * FROM t4 ORDER BY c1;
+DROP TRIGGER t3_ai3;
+CHECK TABLE t3;
+--echo # Trigger on child under LOCK TABLES
+LOCK TABLES t3 WRITE, t2 WRITE, t4 WRITE, t1 WRITE;
+CREATE TRIGGER t3_ai4 AFTER INSERT ON t3 FOR EACH ROW SET @a=1;
+SET @a=0;
+INSERT INTO t4 VALUES (4);
+SELECT @a;
+INSERT INTO t3 VALUES (33);
+SELECT @a;
+SELECT * FROM t4 ORDER BY c1;
+DELETE FROM t4 WHERE c1 = 33;
+DROP TRIGGER t3_ai4;
+UNLOCK TABLES;
+CHECK TABLE t3;
+--echo #
+--echo # Trigger with table use on child
+DELETE FROM t4 WHERE c1 = 4;
+CREATE TRIGGER t3_ai5 AFTER INSERT ON t3 FOR EACH ROW INSERT INTO t2 VALUES(22);
+SELECT COUNT(*) FROM t2;
+INSERT INTO t4 VALUES (4);
+SELECT * FROM t4 ORDER BY c1;
+INSERT INTO t3 VALUES (33);
+SELECT * FROM t4 ORDER BY c1;
+DELETE FROM t4 WHERE c1 = 22;
+DELETE FROM t4 WHERE c1 = 33;
+DROP TRIGGER t3_ai5;
+UNLOCK TABLES;
+CHECK TABLE t2,t3;
+--echo # Trigger with table use on child under LOCK TABLES
+LOCK TABLES t3 WRITE, t2 WRITE, t4 WRITE, t1 WRITE;
+CREATE TRIGGER t3_ai6 AFTER INSERT ON t3 FOR EACH ROW INSERT INTO t2 VALUES(22);
+INSERT INTO t4 VALUES (4);
+SELECT * FROM t4 ORDER BY c1;
+INSERT INTO t3 VALUES (33);
+SELECT * FROM t4 ORDER BY c1;
+DROP TRIGGER t3_ai6;
+UNLOCK TABLES;
+check table t2,t3,t4;
+DELETE FROM t4 WHERE c1 = 22;
+DELETE FROM t4 WHERE c1 = 33;
+--echo # Trigger with table use on child under different LOCK TABLES
+DELETE FROM t4 WHERE c1 = 4;
+LOCK TABLES t4 WRITE,t3 WRITE, t2 WRITE, t1 WRITE;
+CREATE TRIGGER t3_ai7 AFTER INSERT ON t3 FOR EACH ROW INSERT INTO t2 VALUES(22);
+INSERT INTO t4 VALUES (4);
+SELECT * FROM t4 ORDER BY c1;
+INSERT INTO t3 VALUES (33);
+SELECT * FROM t4 ORDER BY c1;
+DROP TRIGGER t3_ai7;
+UNLOCK TABLES;
+check table t2,t3,t4;
+DELETE FROM t4 WHERE c1 = 22;
+DELETE FROM t4 WHERE c1 = 33;
+#
+--echo #
+--echo # Repair
+--echo #
+REPAIR TABLE t4;
+REPAIR TABLE t2;
+SELECT * FROM t4 ORDER BY c1;
+LOCK TABLES t3 WRITE, t2 WRITE, t4 WRITE, t1 WRITE;
+REPAIR TABLE t4;
+REPAIR TABLE t2;
+SELECT * FROM t4 ORDER BY c1;
+UNLOCK TABLES;
+#
+--echo #
+--echo # Optimize
+--echo #
+OPTIMIZE TABLE t4;
+OPTIMIZE TABLE t2;
+SELECT * FROM t4 ORDER BY c1;
+LOCK TABLES t3 WRITE, t2 WRITE, t4 WRITE, t1 WRITE;
+OPTIMIZE TABLE t4;
+OPTIMIZE TABLE t2;
+SELECT * FROM t4 ORDER BY c1;
+UNLOCK TABLES;
+#
+--echo #
+--echo # Checksum
+--echo #
+CHECKSUM TABLE t4;
+CHECKSUM TABLE t2;
+SELECT * FROM t4 ORDER BY c1;
+LOCK TABLES t3 WRITE, t2 WRITE, t4 WRITE, t1 WRITE;
+CHECKSUM TABLE t4;
+CHECKSUM TABLE t2;
+SELECT * FROM t4 ORDER BY c1;
+UNLOCK TABLES;
+#
+--echo #
+--echo # Insert delayed
+--echo #
+# See also Bug#26464 - insert delayed + update + merge = corruption
+# Succeeds in embedded server - is converted to normal insert
+# Fails in normal server, ps-protocol - not supported by engine
+# Fails in normal server, normal protocol - not a base table
+--error 0, ER_DELAYED_NOT_SUPPORTED, ER_WRONG_OBJECT
+INSERT DELAYED INTO t4 VALUES(44);
+# Get rid of row in embedded server
+DELETE FROM t4 WHERE c1 = 44;
+INSERT DELAYED INTO t3 VALUES(33);
+ let $wait_cmd= SHOW STATUS LIKE 'Not_flushed_delayed_rows';
+ let $run= query_get_value($wait_cmd, Value, 1);
+ while ($run)
+ {
+ let $run= query_get_value($wait_cmd, Value, 1);
+ }
+SELECT * FROM t4 ORDER BY c1;
+LOCK TABLES t3 WRITE, t2 WRITE, t4 WRITE, t1 WRITE;
+--error ER_DELAYED_INSERT_TABLE_LOCKED, ER_DELAYED_NOT_SUPPORTED
+INSERT DELAYED INTO t4 VALUES(444);
+--error ER_DELAYED_INSERT_TABLE_LOCKED, ER_DELAYED_NOT_SUPPORTED
+INSERT DELAYED INTO t3 VALUES(333);
+SELECT * FROM t4 ORDER BY c1;
+UNLOCK TABLES;
+DROP TABLE t1, t2, t3, t4;
+#
+--echo #
+--echo # Recursive inclusion of merge tables in their union clauses.
+--echo #
+CREATE TABLE t1 (c1 INT, INDEX(c1));
+CREATE TABLE t2 (c1 INT, INDEX(c1)) ENGINE=MRG_MYISAM UNION=(t1)
+ INSERT_METHOD=LAST;
+CREATE TABLE t3 (c1 INT, INDEX(c1)) ENGINE=MRG_MYISAM UNION=(t2,t1)
+ INSERT_METHOD=LAST;
+ALTER TABLE t2 UNION=(t3,t1);
+--error ER_ADMIN_WRONG_MRG_TABLE
+SELECT * FROM t2;
+DROP TABLE t1, t2, t3;
+
+
+#
+# Bug#25038 - Waiting TRUNCATE
+# Truncate failed with error message when table was in use by MERGE.
+#
+# Show that truncate of child table after use of parent table works.
+CREATE TABLE t1 (c1 INT) ENGINE= MyISAM;
+CREATE TABLE t2 (c1 INT) ENGINE= MyISAM;
+CREATE TABLE t3 (c1 INT) ENGINE= MRG_MYISAM UNION= (t1, t2);
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2);
+SELECT * FROM t3;
+TRUNCATE TABLE t1;
+SELECT * FROM t3;
+DROP TABLE t1, t2, t3;
+#
+# Show that truncate of child table waits while parent table is used.
+# (test partly borrowed from count_distinct3.)
+CREATE TABLE t1 (id INTEGER, grp TINYINT, id_rev INTEGER);
+SET @rnd_max= 2147483647;
+let $1 = 10;
+--disable_query_log
+begin;
+while ($1)
+{
+ SET @rnd= RAND();
+ SET @id = CAST(@rnd * @rnd_max AS UNSIGNED);
+ SET @id_rev= @rnd_max - @id;
+ SET @grp= CAST(127.0 * @rnd AS UNSIGNED);
+ INSERT INTO t1 (id, grp, id_rev) VALUES (@id, @grp, @id_rev);
+ dec $1;
+}
+commit;
+--enable_query_log
+set @@read_buffer_size=2*1024*1024;
+CREATE TABLE t2 SELECT * FROM t1;
+INSERT INTO t1 (id, grp, id_rev) SELECT id, grp, id_rev FROM t2;
+INSERT INTO t2 (id, grp, id_rev) SELECT id, grp, id_rev FROM t1;
+INSERT INTO t1 (id, grp, id_rev) SELECT id, grp, id_rev FROM t2;
+INSERT INTO t2 (id, grp, id_rev) SELECT id, grp, id_rev FROM t1;
+INSERT INTO t1 (id, grp, id_rev) SELECT id, grp, id_rev FROM t2;
+CREATE TABLE t3 (id INTEGER, grp TINYINT, id_rev INTEGER)
+ ENGINE= MRG_MYISAM UNION= (t1, t2);
+SELECT COUNT(*) FROM t1;
+SELECT COUNT(*) FROM t2;
+SELECT COUNT(*) FROM t3;
+connect (con1,localhost,root,,);
+ # As t3 contains random numbers, results are different from test to test.
+ # That's okay, because we test only that select doesn't yield an
+ # error. Note, that --disable_result_log doesn't suppress error output.
+ --disable_result_log
+ send SELECT COUNT(DISTINCT a1.id) FROM t3 AS a1, t3 AS a2
+ WHERE a1.id = a2.id GROUP BY a2.grp;
+connection default;
+sleep 1;
+TRUNCATE TABLE t1;
+ connection con1;
+ reap;
+ --enable_result_log
+ disconnect con1;
+connection default;
+SELECT COUNT(*) FROM t1;
+SELECT COUNT(*) FROM t2;
+SELECT COUNT(*) FROM t3;
+DROP TABLE t1, t2, t3;
+
+#
+# Bug#25700 - merge base tables get corrupted by optimize/analyze/repair table
+#
+# Using FLUSH TABLES before REPAIR.
+CREATE TABLE t1 (c1 INT) ENGINE=MyISAM;
+CREATE TABLE t2 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1) INSERT_METHOD=LAST;
+INSERT INTO t2 VALUES (1);
+SELECT * FROM t2;
+LOCK TABLES t2 WRITE, t1 WRITE;
+FLUSH TABLES;
+REPAIR TABLE t1;
+CHECK TABLE t1;
+REPAIR TABLE t1;
+UNLOCK TABLES;
+CHECK TABLE t1 EXTENDED;
+#
+# Not using FLUSH TABLES before REPAIR.
+LOCK TABLES t2 WRITE, t1 WRITE;
+REPAIR TABLE t1;
+CHECK TABLE t1;
+REPAIR TABLE t1;
+UNLOCK TABLES;
+CHECK TABLE t1 EXTENDED;
+DROP TABLE t1, t2;
+
+#
+# Bug#26377 - Deadlock with MERGE and FLUSH TABLE
+#
+CREATE TABLE t1 ( a INT ) ENGINE=MyISAM;
+CREATE TABLE m1 ( a INT ) ENGINE=MRG_MYISAM UNION=(t1);
+# Lock t1 first. This did always work.
+LOCK TABLES t1 WRITE, m1 WRITE;
+FLUSH TABLE t1;
+UNLOCK TABLES;
+DROP TABLE m1, t1;
+#
+CREATE TABLE t1 ( a INT ) ENGINE=MyISAM;
+CREATE TABLE m1 ( a INT ) ENGINE=MRG_MYISAM UNION=(t1);
+# Lock m1 first. This did deadlock.
+LOCK TABLES m1 WRITE, t1 WRITE;
+FLUSH TABLE t1;
+UNLOCK TABLES;
+DROP TABLE m1, t1;
+
+#
+# Bug#27660 - Falcon: merge table possible
+#
+# Normal MyISAM MERGE operation.
+CREATE TABLE t1 (c1 INT, c2 INT) ENGINE= MyISAM;
+CREATE TABLE t2 (c1 INT, c2 INT) ENGINE= MyISAM;
+CREATE TABLE t3 (c1 INT, c2 INT) ENGINE= MRG_MYISAM UNION(t1, t2);
+INSERT INTO t1 VALUES (1, 1);
+INSERT INTO t2 VALUES (2, 2);
+SELECT * FROM t3;
+# Try an unsupported engine.
+ALTER TABLE t1 ENGINE= MEMORY;
+INSERT INTO t1 VALUES (0, 0);
+# Before fixing, this succeeded, but (0, 0) was missing.
+--error 1168
+SELECT * FROM t3;
+DROP TABLE t1, t2, t3;
+
+#
+# Bug#30275 - Merge tables: flush tables or unlock tables causes server to crash
+#
+CREATE TABLE t1 (c1 INT, KEY(c1));
+CREATE TABLE t2 (c1 INT, KEY(c1)) ENGINE=MRG_MYISAM UNION=(t1)
+ INSERT_METHOD=FIRST;
+LOCK TABLE t1 WRITE, t2 WRITE;
+FLUSH TABLES t2, t1;
+OPTIMIZE TABLE t1;
+FLUSH TABLES t1;
+UNLOCK TABLES;
+#
+FLUSH TABLES;
+INSERT INTO t1 VALUES (1);
+LOCK TABLE t1 WRITE, t2 WRITE;
+FLUSH TABLES t2, t1;
+OPTIMIZE TABLE t1;
+FLUSH TABLES t1;
+UNLOCK TABLES;
+DROP TABLE t1, t2;
+
+#
+# Test derived from test program for
+# Bug#30273 - merge tables: Can't lock file (errno: 155)
+#
+CREATE TABLE t1 (ID INT) ENGINE=MYISAM;
+CREATE TABLE m1 (ID INT) ENGINE=MRG_MYISAM UNION=(t1) INSERT_METHOD=FIRST;
+INSERT INTO t1 VALUES ();
+INSERT INTO m1 VALUES ();
+LOCK TABLE t1 WRITE, m1 WRITE;
+FLUSH TABLES m1, t1;
+OPTIMIZE TABLE t1;
+FLUSH TABLES m1, t1;
+UNLOCK TABLES;
+DROP TABLE t1, m1;
+
+#
+# Bug#35068 - Assertion fails when reading from i_s.tables
+# and there is incorrect merge table
+#
+CREATE TABLE tm1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1) INSERT_METHOD=FIRST;
+SELECT table_schema, table_name, table_type, engine, version, row_format, table_comment FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA = 'test' and TABLE_NAME='tm1';
+
+DROP TABLE tm1;
+
+#
+# Bug#36006 - Optimizer does table scan for select count(*)
+#
+CREATE TABLE t1(C1 INT, C2 INT, KEY C1(C1), KEY C2(C2)) ENGINE=MYISAM;
+CREATE TABLE t2(C1 INT, C2 INT, KEY C1(C1), KEY C2(C2)) ENGINE=MYISAM;
+CREATE TABLE t3(C1 INT, C2 INT, KEY C1(C1), KEY C2(C2)) ENGINE=MYISAM;
+CREATE TABLE t4(C1 INT, C2 INT, KEY C1(C1), KEY C2(C2))
+ ENGINE=MRG_MYISAM UNION=(t1, t2, t3);
+INSERT INTO t1 VALUES (1,1), (1,2),(1,3), (1,4);
+INSERT INTO t2 VALUES (2,1), (2,2),(2,3), (2,4);
+INSERT INTO t3 VALUES (3,1), (3,2),(3,3), (3,4);
+EXPLAIN SELECT COUNT(*) FROM t1;
+EXPLAIN SELECT COUNT(*) FROM t4;
+DROP TABLE t1, t2, t3, t4;
+
+#
+# BUG#39185 - Cardinality for merge tables calculated incorrectly.
+#
+CREATE TABLE t1(a INT, KEY(a));
+INSERT INTO t1 VALUES(0),(1),(2),(3),(4);
+ANALYZE TABLE t1;
+CREATE TABLE m1(a INT, KEY(a)) ENGINE=MERGE UNION=(t1);
+SELECT CARDINALITY FROM INFORMATION_SCHEMA.STATISTICS WHERE TABLE_SCHEMA='test' AND TABLE_NAME='m1';
+SELECT CARDINALITY FROM INFORMATION_SCHEMA.STATISTICS WHERE TABLE_SCHEMA='test' AND TABLE_NAME='m1';
+SELECT CARDINALITY FROM INFORMATION_SCHEMA.STATISTICS WHERE TABLE_SCHEMA='test' AND TABLE_NAME='m1';
+SELECT CARDINALITY FROM INFORMATION_SCHEMA.STATISTICS WHERE TABLE_SCHEMA='test' AND TABLE_NAME='m1';
+DROP TABLE t1, m1;
+
+--echo #
+--echo # Bug #40675 MySQL 5.1 crash with index merge algorithm and Merge tables
+--echo #
+
+--echo # create MYISAM table t1 and insert values into it
+CREATE TABLE t1(a INT);
+INSERT INTO t1 VALUES(1);
+
+--echo # create MYISAM table t2 and insert values into it
+CREATE TABLE t2(a INT, b INT, dummy CHAR(16) DEFAULT '', KEY(a), KEY(b));
+INSERT INTO t2(a,b) VALUES
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(1,2);
+
+--echo # Create the merge table t3
+CREATE TABLE t3(a INT, b INT, dummy CHAR(16) DEFAULT '', KEY(a), KEY(b))
+ENGINE=MERGE UNION=(t2) INSERT_METHOD=FIRST;
+
+--echo # Lock tables t1 and t3 for write
+LOCK TABLES t1 WRITE, t3 WRITE;
+
+--echo # Insert values into the merge table t3
+INSERT INTO t3(a,b) VALUES(1,2);
+
+--echo # select from the join of t2 and t3 (The merge table)
+SELECT t3.a FROM t1,t3 WHERE t3.b=2 AND t3.a=1;
+
+--echo # Unlock the tables
+UNLOCK TABLES;
+
+--echo # drop the created tables
+DROP TABLE t1, t2, t3;
+
+#
+# Bug #41305 server crashes when inserting duplicate row into a merge table
+#
+--echo # insert duplicate value in child table while merge table doesn't have key
+create table t1 (
+ col1 int(10),
+ primary key (col1)
+) ENGINE=MyISAM DEFAULT CHARSET=latin1;
+
+CREATE TABLE m1 (
+ col1 int(10) NOT NULL
+) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 INSERT_METHOD=LAST UNION=(t1);
+
+insert into m1 (col1) values (1);
+--error ER_DUP_KEY
+insert into m1 (col1) values (1);
+
+drop table m1, t1;
+
+--echo #
+--echo # Bug#45800 crash when replacing into a merge table and there is a duplicate
+--echo #
+
+--echo # Replace duplicate value in child table when merge table doesn't have key
+CREATE TABLE t1 (c1 INT PRIMARY KEY) ENGINE=MyISAM;
+CREATE TABLE m1 (c1 INT NOT NULL) ENGINE=MRG_MyISAM INSERT_METHOD=LAST UNION=(t1);
+INSERT INTO m1 VALUES (666);
+SELECT * FROM m1;
+--echo # insert the duplicate value into the merge table
+REPLACE INTO m1 VALUES (666);
+SELECT * FROM m1;
+DROP TABLE m1, t1;
+
+--echo # Insert... on duplicate key update (with duplicate values in the table)
+CREATE TABLE t1 (c1 INT PRIMARY KEY) ENGINE=MyISAM;
+CREATE TABLE m1 (c1 INT NOT NULL) ENGINE=MRG_MyISAM INSERT_METHOD=LAST UNION=(t1);
+INSERT INTO m1 VALUES (666);
+SELECT * FROM m1;
+--echo # insert the duplicate value into the merge table
+INSERT INTO m1 VALUES (666) ON DUPLICATE KEY UPDATE c1=c1+1;
+SELECT * FROM m1;
+DROP TABLE m1, t1;
+
+--echo # Insert duplicate value on MERGE table, where, MERGE has a key but MyISAM has more keys
+CREATE TABLE t1 (c1 INT, c2 INT, UNIQUE (c1), UNIQUE (c2));
+CREATE TABLE m1 (c1 INT, c2 INT, UNIQUE (c1)) ENGINE=MRG_MyISAM INSERT_METHOD=LAST UNION=(t1);
+INSERT INTO m1 VALUES (1,2);
+--echo # insert the duplicate value into the merge table
+--error ER_DUP_KEY
+INSERT INTO m1 VALUES (3,2);
+DROP TABLE m1,t1;
+
+--echo # Try to define MERGE and MyISAM with keys on different columns
+CREATE TABLE t1 (c1 INT, c2 INT, UNIQUE (c1));
+CREATE TABLE m1 (c1 INT, c2 INT, UNIQUE (c2)) ENGINE=MRG_MyISAM INSERT_METHOD=LAST UNION=(t1);
+--echo # Try accessing the merge table for inserts (error occurs)
+--error ER_WRONG_MRG_TABLE
+INSERT INTO m1 VALUES (1,2);
+--error ER_WRONG_MRG_TABLE
+INSERT INTO m1 VALUES (1,4);
+DROP TABLE m1,t1;
+
+#
+#Bug #44040 MySQL allows creating a MERGE table upon VIEWs but crashes
+#when using it
+#
+
+CREATE TABLE t1 (
+ col1 INT(10)
+) ENGINE=MyISAM DEFAULT CHARSET=latin1;
+
+CREATE VIEW v1 as SELECT * FROM t1;
+CREATE TABLE m1 (
+ col1 INT(10)
+)ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 INSERT_METHOD=LAST UNION=(v1);
+
+--echo #Select should detect that the child table is a view and fail.
+--error ER_WRONG_MRG_TABLE
+SELECT * FROM m1;
+
+DROP VIEW v1;
+DROP TABLE m1, t1;
+
+--echo #
+--echo # Bug #45796: invalid memory reads and writes when altering merge and
+--echo # base tables
+--echo #
+
+CREATE TABLE t1(c1 INT) ENGINE=MyISAM;
+CREATE TABLE m1(c1 INT) ENGINE=MERGE UNION=(t1);
+ALTER TABLE m1 ADD INDEX idx_c1(c1);
+# Open the MERGE table and allocate buffers based on children's definition.
+--error ER_WRONG_MRG_TABLE
+SELECT * FROM m1;
+# Change the child table definition.
+ALTER TABLE t1 ADD INDEX idx_c1(c1);
+# Check that old buffers are not reused
+SELECT * FROM m1;
+
+DROP TABLE m1;
+DROP TABLE t1;
+
+--echo #
+--echo # Bug45781 infinite hang/crash in "opening tables" after handler tries to
+--echo # open merge table
+--echo #
+
+CREATE TABLE t1(a int)engine=myisam;
+CREATE TABLE t2(a int)engine=myisam;
+CREATE TABLE t3(a int)engine=myisam;
+CREATE TABLE t4(a int)engine=myisam;
+CREATE TABLE t5(a int)engine=myisam;
+CREATE TABLE t6(a int)engine=myisam;
+CREATE TABLE t7(a int)engine=myisam;
+CREATE TABLE m1(a int)engine=merge union=(t1,t2,t3,t4,t5,t6,t7);
+SELECT 1 FROM m1;
+--error ER_ILLEGAL_HA
+HANDLER m1 OPEN;
+DROP TABLE m1,t1,t2,t3,t4,t5,t6,t7;
+--error ER_NO_SUCH_TABLE
+SELECT 1 FROM m1; # Should not hang!
+
+--echo #
+--echo # Bug #46614: Assertion in show_create_trigger()
+--echo #
+CREATE TABLE t1(a int);
+CREATE TABLE t2(a int);
+CREATE TABLE t3(a int) ENGINE = MERGE UNION(t1, t2);
+CREATE TRIGGER tr1 AFTER INSERT ON t3 FOR EACH ROW CALL foo();
+--replace_column 7 #
+SHOW CREATE TRIGGER tr1;
+DROP TRIGGER tr1;
+DROP TABLE t1, t2, t3;
+
+--echo #
+--echo # BUG#48265 - MRG_MYISAM problem (works in 5.0.85, does't work in 5.1.40)
+--echo #
+CREATE DATABASE `test/1`;
+
+CREATE TABLE `test/1`.`t/1`(a INT);
+CREATE TABLE m1(a INT) ENGINE=MERGE UNION=(`test/1`.`t/1`);
+SELECT * FROM m1;
+SHOW CREATE TABLE m1;
+DROP TABLE m1;
+
+CREATE TABLE `test/1`.m1(a INT) ENGINE=MERGE UNION=(`test/1`.`t/1`);
+SELECT * FROM `test/1`.m1;
+SHOW CREATE TABLE `test/1`.m1;
+DROP TABLE `test/1`.m1;
+DROP TABLE `test/1`.`t/1`;
+
+CREATE TEMPORARY TABLE `test/1`.`t/1`(a INT);
+CREATE TEMPORARY TABLE m1(a INT) ENGINE=MERGE UNION=(`test/1`.`t/1`);
+SELECT * FROM m1;
+SHOW CREATE TABLE m1;
+DROP TABLE m1;
+
+CREATE TEMPORARY TABLE `test/1`.m1(a INT) ENGINE=MERGE UNION=(`test/1`.`t/1`);
+SELECT * FROM `test/1`.m1;
+SHOW CREATE TABLE `test/1`.m1;
+DROP TABLE `test/1`.m1;
+DROP TABLE `test/1`.`t/1`;
+
+DROP DATABASE `test/1`;
+
+# Test compatibility. Use '@' instead of '/' (was not allowed in 5.0)
+
+CREATE TABLE `t@1`(a INT);
+copy_file std_data/bug48265.frm $MYSQLD_DATADIR/test/m1.frm;
+write_file $MYSQLD_DATADIR/test/m1.MRG;
+t@1
+EOF
+SELECT * FROM m1;
+SHOW CREATE TABLE m1;
+DROP TABLE `t@1`;
+
+CREATE DATABASE `test@1`;
+CREATE TABLE `test@1`.`t@1`(a INT);
+FLUSH TABLE m1;
+remove_file $MYSQLD_DATADIR/test/m1.MRG;
+write_file $MYSQLD_DATADIR/test/m1.MRG;
+./test@1/t@1
+EOF
+SELECT * FROM m1;
+SHOW CREATE TABLE m1;
+DROP TABLE m1;
+DROP TABLE `test@1`.`t@1`;
+DROP DATABASE `test@1`;
+
+--echo #
+--echo # Bug#51494c rash with join, explain and 'sounds like' operator
+--echo #
+
+CREATE TABLE t1 (a INT) ENGINE=MYISAM;
+INSERT INTO t1 VALUES(1);
+
+CREATE TABLE t2 (b INT NOT NULL,c INT,d INT,e BLOB NOT NULL,
+KEY idx0 (d, c)) ENGINE=MERGE;
+
+EXPLAIN SELECT * FROM t1 NATURAL RIGHT JOIN
+t2 WHERE b SOUNDS LIKE e AND d = 1;
+
+DROP TABLE t2, t1;
+
+--echo #
+--echo # Bug#46339 - crash on REPAIR TABLE merge table USE_FRM
+--echo #
+#
+# Test derived from a proposal of Shane Bester.
+#
+CREATE TABLE t1 (c1 INT) ENGINE=MYISAM;
+CREATE TABLE m1 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1) INSERT_METHOD=LAST;
+#
+# REPAIR ... USE_FRM with LOCK TABLES.
+#
+LOCK TABLE m1 READ;
+REPAIR TABLE m1 USE_FRM;
+UNLOCK TABLES;
+#
+# REPAIR ... USE_FRM without LOCK TABLES.
+#
+# This statement crashed the server (Bug#46339).
+#
+REPAIR TABLE m1 USE_FRM;
+#
+DROP TABLE m1,t1;
+#
+# Test derived from a proposal of Matthias Leich.
+#
+# Base table is missing.
+#
+CREATE TABLE m1 (f1 BIGINT) ENGINE=MRG_MyISAM UNION(t1);
+#
+# This statement crashed the server (Bug#46339).
+#
+REPAIR TABLE m1 USE_FRM;
+#
+# Create base table.
+#
+CREATE TABLE t1 (f1 BIGINT) ENGINE = MyISAM;
+#
+# This statement crashed the server (Bug#46339).
+#
+REPAIR TABLE m1 USE_FRM;
+#
+# Normal repair as reference.
+#
+REPAIR TABLE m1;
+#
+# Cleanup.
+#
+DROP TABLE m1, t1;
+#
+# Same with temporary tables.
+#
+# Base table is missing.
+#
+CREATE TEMPORARY TABLE m1 (f1 BIGINT) ENGINE=MRG_MyISAM UNION(t1);
+#
+# This statement crashed the server (Bug#46339).
+#
+REPAIR TABLE m1 USE_FRM;
+#
+# Create base table.
+#
+CREATE TEMPORARY TABLE t1 (f1 BIGINT) ENGINE=MyISAM;
+#
+# This statement crashed the server (Bug#46339).
+#
+REPAIR TABLE m1 USE_FRM;
+#
+# Normal repair as reference.
+#
+REPAIR TABLE m1;
+#
+# Cleanup.
+#
+DROP TABLE m1, t1;
+
+#
+# MDEV-5266 MySQL:57657 - Temporary MERGE table with temporary underlying is broken by ALTER
+#
+create temporary table t1_temp(i int);
+create temporary table tm_temp_temp (i int) engine=merge union=(t1_temp) insert_method=last;
+alter table tm_temp_temp insert_method=first;
+check table tm_temp_temp;
+drop temporary table t1_temp, tm_temp_temp;
+
+--echo End of 5.1 tests
+
+--echo #
+--echo # MDEV-4277: Crash inside mi_killed_in_mariadb() with myisammrg
+--echo #
+create table t1 (a int);
+insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
+
+create table t2 ( i int ) engine=myisam;
+insert into t2 values (1),(2);
+
+create table t3 (a int, b int, filler char(100), key(a), key(b)) engine=myisam;
+create table t4 like t3;
+insert into t3
+ select A.a+10*B.a+100*C.a,
+ A.a+10*B.a+100*C.a,
+ 'filler-data-FILLER-DATA-qqq'
+ from t1 A, t1 B, t1 C where C.a < 5;
+insert into t4
+ select A.a+10*B.a+100*C.a,
+ A.a+10*B.a+100*C.a,
+ 'filler-data-FILLER-DATA-qqq'
+ from t1 A, t1 B, t1 C where C.a >= 5;
+
+create table t5 like t3;
+alter table t5 engine=merge;
+alter table t5 union(t3, t4);
+
+update t5 set b=999, a=999 where b>950;
+
+explain
+select * from t2, t5 where t5.a=999 and t5.b=999;
+select * from t2, t5 where t5.a=999 and t5.b=999;
+
+drop table t5;
+drop table t1,t2,t3,t4;
+
+--echo End of 5.3 tests
+
+#
+# BUG#35274 - merge table doesn't need any base tables, gives error 124 when
+# key accessed
+#
+CREATE TABLE t1(a INT, KEY(a)) ENGINE=merge;
+SELECT MAX(a) FROM t1;
+DROP TABLE t1;
+
+--echo #
+--echo # An additional test case for Bug#27430 Crash in subquery code
+--echo # when in PS and table DDL changed after PREPARE
+--echo #
+--echo # Test merge table with too many merge children.
+--echo #
+set @save_table_open_cache=@@global.table_open_cache;
+--echo #
+--echo # Set @@global.table_open_cache to minimum
+--echo #
+set @@global.table_open_cache=400;
+select @@table_open_cache;
+set @a=null;
+let $1 = `select @@table_open_cache;`;
+--echo #
+--echo # Create 400 merge children
+--echo #
+--disable_query_log
+while ($1)
+{
+ eval create table t$1 (a int) engine=myisam;
+ eval set @a=ifnull(concat(@a, ", ", "t$1"), "t$1");
+ dec $1;
+}
+--enable_query_log
+set @a=concat("create table t_parent (a int) union(", @a,
+ ") insert_method=first engine=mrg_myisam");
+prepare stmt from @a;
+execute stmt;
+prepare stmt from "select * from t_parent";
+--disable_result_log
+--error 0,ER_NEED_REPREPARE
+execute stmt;
+--error 0,ER_NEED_REPREPARE
+execute stmt;
+--error 0,ER_NEED_REPREPARE
+execute stmt;
+deallocate prepare stmt;
+--enable_result_log
+
+--echo #
+--echo # Create merge parent
+--echo #
+
+--echo #
+--echo # Cleanup
+--echo #
+let $1 = `select @@table_open_cache;`;
+--disable_query_log
+while ($1)
+{
+ eval drop table t$1;
+ dec $1;
+}
+--enable_query_log
+drop table t_parent;
+set @@global.table_open_cache=@save_table_open_cache;
+
+#
+# WL#4144 - Lock MERGE engine children
+#
+# Test DATA/INDEX DIRECTORY
+#
+CREATE DATABASE mysql_test1;
+--disable_query_log
+# data/index directory don't work in HAVE_purify builds. Disable
+# build-dependent warnings.
+--disable_warnings
+--echo CREATE TABLE t1 ... DATA DIRECTORY=... INDEX DIRECTORY=...
+eval CREATE TABLE t1 (c1 INT)
+ DATA DIRECTORY='$MYSQLTEST_VARDIR/tmp'
+ INDEX DIRECTORY='$MYSQLTEST_VARDIR/tmp';
+--echo CREATE TABLE mysql_test1.t2 ... DATA DIRECTORY=... INDEX DIRECTORY=...
+eval CREATE TABLE mysql_test1.t2 (c1 INT)
+ DATA DIRECTORY='$MYSQLTEST_VARDIR/tmp'
+ INDEX DIRECTORY='$MYSQLTEST_VARDIR/tmp';
+--enable_query_log
+--enable_warnings
+CREATE TABLE m1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1,mysql_test1.t2)
+ INSERT_METHOD=LAST;
+INSERT INTO t1 VALUES (1);
+INSERT INTO mysql_test1.t2 VALUES (2);
+SELECT * FROM m1;
+#--copy_file $MYSQLTEST_DATADIR/test/m1.MRG /tmp/mysql-test-m1.MRG
+DROP TABLE t1, mysql_test1.t2, m1;
+DROP DATABASE mysql_test1;
+#
+# Review detected Crash #1. Detaching main tables while in sub statement.
+#
+CREATE TABLE t1 (c1 INT);
+CREATE TABLE t2 (c1 INT);
+INSERT INTO t1 (c1) VALUES (1);
+CREATE TABLE tm1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1,t2) INSERT_METHOD=FIRST;
+CREATE TABLE t3 (c1 INT);
+INSERT INTO t3 (c1) VALUES (1);
+CREATE FUNCTION f1() RETURNS INT RETURN (SELECT MAX(c1) FROM t3);
+CREATE VIEW v1 AS SELECT foo.c1 c1, f1() c2, bar.c1 c3, f1() c4
+ FROM tm1 foo, tm1 bar, t3;
+SELECT * FROM v1;
+DROP FUNCTION f1;
+DROP VIEW v1;
+DROP TABLE tm1, t1, t2, t3;
+#
+# Review detected Crash #2. Trying to attach temporary table twice.
+#
+CREATE TEMPORARY TABLE t1 (c1 INT);
+CREATE TEMPORARY TABLE t2 (c1 INT);
+CREATE TEMPORARY TABLE tm1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1,t2)
+ INSERT_METHOD=FIRST;
+CREATE FUNCTION f1() RETURNS INT RETURN (SELECT MAX(c1) FROM tm1);
+INSERT INTO tm1 (c1) VALUES (1);
+SELECT f1() FROM (SELECT 1) AS c1;
+DROP FUNCTION f1;
+DROP TABLE tm1, t1, t2;
+#
+# Review suggested test. DDL in a stored function.
+#
+DELIMITER |;
+CREATE FUNCTION f1() RETURNS INT
+BEGIN
+ CREATE TEMPORARY TABLE t1 (c1 INT);
+ CREATE TEMPORARY TABLE t2 (c1 INT);
+ CREATE TEMPORARY TABLE tm1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1,t2);
+ INSERT INTO t1 (c1) VALUES (1);
+ RETURN (SELECT MAX(c1) FROM tm1);
+END|
+DELIMITER ;|
+SELECT f1() FROM (SELECT 1 UNION SELECT 1) c1;
+DROP FUNCTION f1;
+DROP TABLE tm1, t1, t2;
+#
+# Base table. No LOCK TABLES, no functions/triggers.
+#
+CREATE TABLE t1 (c1 INT) ENGINE=MyISAM;
+CREATE TABLE tm1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1) INSERT_METHOD=LAST;
+INSERT INTO tm1 VALUES (1);
+SELECT * FROM tm1;
+DROP TABLE tm1, t1;
+#
+# Base table. No LOCK TABLES, sub-statement that is run inside a function.
+#
+DELIMITER |;
+CREATE FUNCTION f1() RETURNS INT
+BEGIN
+ INSERT INTO tm1 VALUES (1);
+ RETURN (SELECT MAX(c1) FROM tm1);
+END|
+DELIMITER ;|
+CREATE TABLE t1 (c1 INT) ENGINE=MyISAM;
+CREATE TABLE tm1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1) INSERT_METHOD=LAST;
+SELECT f1();
+DROP FUNCTION f1;
+DROP TABLE tm1, t1;
+#
+# Base table. LOCK TABLES, no functions/triggers.
+#
+CREATE TABLE t1 (c1 INT) ENGINE=MyISAM;
+CREATE TABLE tm1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1) INSERT_METHOD=LAST;
+LOCK TABLE tm1 WRITE;
+INSERT INTO tm1 VALUES (1);
+SELECT * FROM tm1;
+UNLOCK TABLES;
+DROP TABLE tm1, t1;
+#
+# Base table. LOCK TABLES, sub-statement that is run inside a function.
+#
+DELIMITER |;
+CREATE FUNCTION f1() RETURNS INT
+BEGIN
+ INSERT INTO tm1 VALUES (1);
+ RETURN (SELECT MAX(c1) FROM tm1);
+END|
+DELIMITER ;|
+CREATE TABLE t1 (c1 INT) ENGINE=MyISAM;
+CREATE TABLE tm1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1) INSERT_METHOD=LAST;
+LOCK TABLE tm1 WRITE;
+SELECT f1();
+UNLOCK TABLES;
+DROP FUNCTION f1;
+DROP TABLE tm1, t1;
+#
+# Base table. LOCK TABLES statement that locks a table that has a trigger
+# that inserts into a merge table, so an attempt is made to lock tables
+# of a sub-statement.
+#
+CREATE TABLE t1 (c1 INT) ENGINE=MyISAM;
+CREATE TABLE t2 (c1 INT) ENGINE=MyISAM;
+CREATE TABLE tm1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1) INSERT_METHOD=LAST;
+CREATE TRIGGER t2_ai AFTER INSERT ON t2
+ FOR EACH ROW INSERT INTO tm1 VALUES(11);
+LOCK TABLE t2 WRITE;
+INSERT INTO t2 VALUES (2);
+SELECT * FROM tm1;
+SELECT * FROM t2;
+UNLOCK TABLES;
+DROP TRIGGER t2_ai;
+DROP TABLE tm1, t1, t2;
+#
+# Temporary. No LOCK TABLES, no functions/triggers.
+#
+CREATE TEMPORARY TABLE t1 (c1 INT) ENGINE=MyISAM;
+CREATE TEMPORARY TABLE tm1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1)
+ INSERT_METHOD=LAST;
+INSERT INTO tm1 VALUES (1);
+SELECT * FROM tm1;
+DROP TABLE tm1, t1;
+#
+# Temporary. No LOCK TABLES, sub-statement that is run inside a function.
+#
+DELIMITER |;
+CREATE FUNCTION f1() RETURNS INT
+BEGIN
+ INSERT INTO tm1 VALUES (1);
+ RETURN (SELECT MAX(c1) FROM tm1);
+END|
+DELIMITER ;|
+CREATE TEMPORARY TABLE t1 (c1 INT) ENGINE=MyISAM;
+CREATE TEMPORARY TABLE tm1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1)
+ INSERT_METHOD=LAST;
+SELECT f1();
+DROP FUNCTION f1;
+DROP TABLE tm1, t1;
+#
+# Temporary. LOCK TABLES, no functions/triggers.
+#
+CREATE TEMPORARY TABLE t1 (c1 INT) ENGINE=MyISAM;
+CREATE TEMPORARY TABLE tm1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1)
+ INSERT_METHOD=LAST;
+CREATE TABLE t9 (c1 INT) ENGINE=MyISAM;
+LOCK TABLE t9 WRITE;
+INSERT INTO tm1 VALUES (1);
+SELECT * FROM tm1;
+UNLOCK TABLES;
+DROP TABLE tm1, t1, t9;
+#
+# Temporary. LOCK TABLES, sub-statement that is run inside a function.
+#
+DELIMITER |;
+CREATE FUNCTION f1() RETURNS INT
+BEGIN
+ INSERT INTO tm1 VALUES (1);
+ RETURN (SELECT MAX(c1) FROM tm1);
+END|
+DELIMITER ;|
+CREATE TEMPORARY TABLE t1 (c1 INT) ENGINE=MyISAM;
+CREATE TEMPORARY TABLE tm1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1)
+ INSERT_METHOD=LAST;
+CREATE TABLE t9 (c1 INT) ENGINE=MyISAM;
+LOCK TABLE t9 WRITE;
+SELECT f1();
+UNLOCK TABLES;
+DROP FUNCTION f1;
+DROP TABLE tm1, t1, t9;
+#
+# Temporary. LOCK TABLES statement that locks a table that has a trigger
+# that inserts into a merge table, so an attempt is made to lock tables
+# of a sub-statement.
+#
+CREATE TEMPORARY TABLE t1 (c1 INT) ENGINE=MyISAM;
+CREATE TEMPORARY TABLE tm1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1)
+ INSERT_METHOD=LAST;
+CREATE TABLE t2 (c1 INT) ENGINE=MyISAM;
+CREATE TRIGGER t2_ai AFTER INSERT ON t2
+ FOR EACH ROW INSERT INTO tm1 VALUES(11);
+LOCK TABLE t2 WRITE;
+INSERT INTO t2 VALUES (2);
+SELECT * FROM tm1;
+SELECT * FROM t2;
+UNLOCK TABLES;
+DROP TRIGGER t2_ai;
+DROP TABLE tm1, t1, t2;
+--echo #
+--echo # Don't allow an update of a MERGE child in a trigger
+--echo # if the table's already being modified by the main
+--echo # statement.
+--echo #
+CREATE TABLE t1 (c1 INT) ENGINE=MyISAM;
+CREATE TABLE tm1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1)
+ INSERT_METHOD=LAST;
+CREATE TRIGGER tm1_ai AFTER INSERT ON tm1
+ FOR EACH ROW INSERT INTO t1 VALUES(11);
+LOCK TABLE tm1 WRITE, t1 WRITE;
+--error ER_CANT_UPDATE_USED_TABLE_IN_SF_OR_TRG
+INSERT INTO tm1 VALUES (1);
+SELECT * FROM tm1;
+UNLOCK TABLES;
+LOCK TABLE t1 WRITE, tm1 WRITE;
+--error ER_CANT_UPDATE_USED_TABLE_IN_SF_OR_TRG
+INSERT INTO tm1 VALUES (1);
+SELECT * FROM tm1;
+UNLOCK TABLES;
+DROP TRIGGER tm1_ai;
+DROP TABLE tm1, t1;
+
+--echo #
+--echo # Don't select MERGE child when trying to get a prelocked table.
+--echo #
+--echo # Due to a limitation demonstrated by the previous test
+--echo # we can no longer use a write-locked prelocked table.
+--echo # The test is kept for historical purposes.
+--echo #
+CREATE TABLE t1 (c1 INT) ENGINE=MyISAM;
+CREATE TABLE tm1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1)
+ INSERT_METHOD=LAST;
+--enable_prepare_warnings
+CREATE TRIGGER tm1_ai AFTER INSERT ON tm1
+ FOR EACH ROW SELECT max(c1) FROM t1 INTO @var;
+--disable_prepare_warnings
+LOCK TABLE tm1 WRITE, t1 WRITE;
+INSERT INTO tm1 VALUES (1);
+SELECT * FROM tm1;
+UNLOCK TABLES;
+LOCK TABLE t1 WRITE, tm1 WRITE;
+INSERT INTO tm1 VALUES (1);
+SELECT * FROM tm1;
+UNLOCK TABLES;
+DROP TRIGGER tm1_ai;
+DROP TABLE tm1, t1;
+
+# Don't resurrect chopped off prelocked tables.
+# The problem is not visible by test results; only by debugging.
+#
+CREATE TABLE t1 (c1 INT) ENGINE=MyISAM;
+CREATE TABLE t2 (c1 INT) ENGINE=MyISAM;
+CREATE TABLE t3 (c1 INT) ENGINE=MyISAM;
+CREATE TABLE t4 (c1 INT) ENGINE=MyISAM;
+CREATE TABLE t5 (c1 INT) ENGINE=MyISAM;
+CREATE TABLE tm1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1,t2,t3,t4,t5)
+ INSERT_METHOD=LAST;
+--enable_prepare_warnings
+CREATE TRIGGER t2_au AFTER UPDATE ON t2
+ FOR EACH ROW SELECT MAX(c1) FROM t1 INTO @var;
+--disable_prepare_warnings
+CREATE FUNCTION f1() RETURNS INT
+ RETURN (SELECT MAX(c1) FROM t4);
+LOCK TABLE tm1 WRITE, t1 WRITE, t2 WRITE, t3 WRITE, t4 WRITE, t5 WRITE;
+INSERT INTO t1 VALUES(1);
+INSERT INTO t2 VALUES(2);
+INSERT INTO t3 VALUES(3);
+INSERT INTO t4 VALUES(4);
+INSERT INTO t5 VALUES(5);
+ connect (con1,localhost,root,,);
+ send UPDATE t2, tm1 SET t2.c1=f1();
+connection default;
+# Force reopen in other thread.
+#sleep 1;
+FLUSH TABLES;
+#sleep 1;
+FLUSH TABLES;
+#sleep 1;
+UNLOCK TABLES;
+ connection con1;
+ reap;
+ disconnect con1;
+connection default;
+SELECT * FROM tm1;
+DROP TRIGGER t2_au;
+DROP FUNCTION f1;
+DROP TABLE tm1, t1, t2, t3, t4, t5;
+
+--echo #
+--echo # Bug#47633 - assert in ha_myisammrg::info during OPTIMIZE
+--echo #
+CREATE TEMPORARY TABLE t1 (c1 INT);
+ALTER TABLE t1 ENGINE=MERGE UNION(t_not_exists,t1);
+OPTIMIZE TABLE t1;
+DROP TABLE t1;
+
+--echo #
+--echo # Bug#36171 - CREATE TEMPORARY TABLE and MERGE engine
+--echo # More tests with TEMPORARY MERGE table and permanent children.
+--echo # First without locked tables.
+--echo #
+#
+--echo #
+CREATE TABLE t1 (c1 INT, c2 INT) ENGINE=MyISAM;
+CREATE TABLE t2 (c1 INT, c2 INT) ENGINE=MyISAM;
+CREATE TEMPORARY TABLE m1 (c1 INT, c2 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+ INSERT_METHOD=LAST;
+SHOW CREATE TABLE t1;
+SHOW CREATE TABLE m1;
+SELECT * FROM m1;
+INSERT INTO t1 VALUES (111, 121);
+INSERT INTO m1 VALUES (211, 221);
+SELECT * FROM m1;
+SELECT * FROM t1;
+SELECT * FROM t2;
+#
+--echo #
+ALTER TABLE m1 RENAME m2;
+SHOW CREATE TABLE m2;
+SELECT * FROM m2;
+#
+--echo #
+CREATE TEMPORARY TABLE m1 (c1 INT, c2 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+ INSERT_METHOD=LAST;
+--error ER_TABLE_EXISTS_ERROR
+ALTER TABLE m2 RENAME m1;
+DROP TABLE m1;
+ALTER TABLE m2 RENAME m1;
+SHOW CREATE TABLE m1;
+SELECT * FROM m1;
+#
+--echo #
+ALTER TABLE m1 ADD COLUMN c3 INT;
+--error ER_WRONG_MRG_TABLE
+INSERT INTO m1 VALUES (212, 222, 232);
+--error ER_WRONG_MRG_TABLE
+SELECT * FROM m1;
+ALTER TABLE t1 ADD COLUMN c3 INT;
+ALTER TABLE t2 ADD COLUMN c3 INT;
+INSERT INTO m1 VALUES (212, 222, 232);
+SELECT * FROM m1;
+#
+--echo #
+ALTER TABLE m1 DROP COLUMN c3;
+--error ER_WRONG_MRG_TABLE
+INSERT INTO m1 VALUES (213, 223);
+--error ER_WRONG_MRG_TABLE
+SELECT * FROM m1;
+ALTER TABLE t1 DROP COLUMN c3;
+ALTER TABLE t2 DROP COLUMN c3;
+INSERT INTO m1 VALUES (213, 223);
+SELECT * FROM m1;
+#
+--echo #
+CREATE TABLE t3 (c1 INT, c2 INT) ENGINE=MyISAM;
+ALTER TABLE m1 UNION=(t1,t2,t3);
+INSERT INTO m1 VALUES (311, 321);
+SELECT * FROM m1;
+SELECT * FROM t1;
+SELECT * FROM t2;
+SELECT * FROM t3;
+#
+--echo #
+CREATE TEMPORARY TABLE t4 (c1 INT, c2 INT) ENGINE=MyISAM;
+ALTER TABLE m1 UNION=(t1,t2,t3,t4);
+INSERT INTO m1 VALUES (411, 421);
+SELECT * FROM m1;
+SELECT * FROM t1;
+SELECT * FROM t2;
+SELECT * FROM t3;
+SELECT * FROM t4;
+#
+--echo #
+ALTER TABLE m1 ENGINE=MyISAM;
+SHOW CREATE TABLE m1;
+INSERT INTO m1 VALUES (511, 521);
+SELECT * FROM m1;
+#
+--echo #
+ALTER TABLE m1 ENGINE=MRG_MyISAM UNION=(t1,t2)
+ INSERT_METHOD=LAST;
+SELECT * FROM m1;
+SELECT * FROM t1;
+SELECT * FROM t2;
+#
+--echo #
+CREATE TEMPORARY TABLE t1 (c1 INT, c2 INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (611, 621);
+SELECT * FROM m1;
+DROP TABLE t1;
+SELECT * FROM m1;
+#
+#
+--echo #
+--echo #
+SHOW CREATE TABLE m1;
+#
+--echo #
+CREATE TABLE m2 SELECT * FROM m1;
+SHOW CREATE TABLE m2;
+SELECT * FROM m2;
+DROP TABLE m2;
+#
+--echo #
+CREATE TEMPORARY TABLE m2 SELECT * FROM m1;
+SHOW CREATE TABLE m2;
+SELECT * FROM m2;
+DROP TABLE m2;
+#
+--echo #
+CREATE TABLE m2 (c1 INT, c2 INT) ENGINE=MRG_MyISAM UNION=(t3,t4)
+ INSERT_METHOD=LAST;
+--error ER_WRONG_MRG_TABLE
+SELECT * FROM m2;
+DROP TABLE m2;
+#
+--echo #
+--error ER_WRONG_OBJECT
+CREATE TABLE m2 (c1 INT, c2 INT) ENGINE=MRG_MyISAM UNION=(t3,t4)
+ INSERT_METHOD=LAST SELECT * FROM m1;
+#
+--echo #
+--error ER_WRONG_OBJECT
+CREATE TEMPORARY TABLE m2 (c1 INT, c2 INT) ENGINE=MRG_MyISAM UNION=(t3,t4)
+ INSERT_METHOD=LAST SELECT * FROM m1;
+#
+--echo #
+CREATE TABLE m2 LIKE m1;
+SHOW CREATE TABLE m2;
+SELECT * FROM m2;
+INSERT INTO m2 SELECT * FROM m1;
+SELECT * FROM m2;
+DROP TABLE m2;
+#
+--echo #
+CREATE TEMPORARY TABLE m2 LIKE m1;
+SHOW CREATE TABLE m2;
+SELECT * FROM m2;
+INSERT INTO m2 SELECT * FROM m1;
+SELECT * FROM m2;
+DROP TABLE m2;
+#
+--echo #
+CREATE TEMPORARY TABLE m2 (c1 INT, c2 INT) ENGINE=MRG_MyISAM UNION=(t3,t4)
+ INSERT_METHOD=LAST;
+INSERT INTO m2 SELECT * FROM m1;
+SELECT * FROM m2;
+#
+#
+--echo #
+--echo #
+LOCK TABLE m1 WRITE, m2 WRITE;
+SELECT * FROM m1,m2 WHERE m1.c1=m2.c1;
+UNLOCK TABLES;
+#
+DROP TABLE t1, t2, t3, t4, m1, m2;
+#
+#
+#
+--echo #
+--echo # Bug#36171 - CREATE TEMPORARY TABLE and MERGE engine
+--echo # More tests with TEMPORARY MERGE table and permanent children.
+--echo # (continued) Now the same with locked table.
+--echo #
+CREATE TABLE t1 (c1 INT, c2 INT) ENGINE=MyISAM;
+CREATE TABLE t2 (c1 INT, c2 INT) ENGINE=MyISAM;
+CREATE TEMPORARY TABLE m1 (c1 INT, c2 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+ INSERT_METHOD=LAST;
+SHOW CREATE TABLE t1;
+SHOW CREATE TABLE m1;
+SELECT * FROM m1;
+INSERT INTO t1 VALUES (111, 121);
+INSERT INTO m1 VALUES (211, 221);
+SELECT * FROM m1;
+SELECT * FROM t1;
+SELECT * FROM t2;
+#
+--echo #
+LOCK TABLE m1 WRITE, t1 WRITE, t2 WRITE;
+#
+--echo #
+ALTER TABLE m1 RENAME m2;
+SHOW CREATE TABLE m2;
+SELECT * FROM m2;
+#
+--echo #
+CREATE TEMPORARY TABLE m1 (c1 INT, c2 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+ INSERT_METHOD=LAST;
+--error ER_TABLE_EXISTS_ERROR
+ALTER TABLE m2 RENAME m1;
+DROP TABLE m1;
+ALTER TABLE m2 RENAME m1;
+SHOW CREATE TABLE m1;
+SELECT * FROM m1;
+#
+--echo #
+ALTER TABLE m1 ADD COLUMN c3 INT;
+--error ER_WRONG_MRG_TABLE
+INSERT INTO m1 VALUES (212, 222, 232);
+--error ER_WRONG_MRG_TABLE
+SELECT * FROM m1;
+ALTER TABLE t1 ADD COLUMN c3 INT;
+ALTER TABLE t2 ADD COLUMN c3 INT;
+INSERT INTO m1 VALUES (212, 222, 232);
+SELECT * FROM m1;
+#
+--echo #
+ALTER TABLE m1 DROP COLUMN c3;
+--error ER_WRONG_MRG_TABLE
+INSERT INTO m1 VALUES (213, 223);
+--error ER_WRONG_MRG_TABLE
+SELECT * FROM m1;
+ALTER TABLE t1 DROP COLUMN c3;
+ALTER TABLE t2 DROP COLUMN c3;
+INSERT INTO m1 VALUES (213, 223);
+SELECT * FROM m1;
+#
+--echo #
+UNLOCK TABLES;
+CREATE TABLE t3 (c1 INT, c2 INT) ENGINE=MyISAM;
+ALTER TABLE m1 UNION=(t1,t2,t3);
+LOCK TABLE m1 WRITE;
+INSERT INTO m1 VALUES (311, 321);
+SELECT * FROM m1;
+SELECT * FROM t1;
+SELECT * FROM t2;
+SELECT * FROM t3;
+#
+--echo #
+CREATE TEMPORARY TABLE t4 (c1 INT, c2 INT) ENGINE=MyISAM;
+ALTER TABLE m1 UNION=(t1,t2,t3,t4);
+INSERT INTO m1 VALUES (411, 421);
+SELECT * FROM m1;
+SELECT * FROM t1;
+SELECT * FROM t2;
+SELECT * FROM t3;
+SELECT * FROM t4;
+#
+--echo #
+ALTER TABLE m1 ENGINE=MyISAM;
+SHOW CREATE TABLE m1;
+INSERT INTO m1 VALUES (511, 521);
+SELECT * FROM m1;
+#
+--echo #
+ALTER TABLE m1 ENGINE=MRG_MyISAM UNION=(t1,t2)
+ INSERT_METHOD=LAST;
+SELECT * FROM m1;
+SELECT * FROM t1;
+SELECT * FROM t2;
+#
+--echo #
+CREATE TEMPORARY TABLE t1 (c1 INT, c2 INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (611, 621);
+SELECT * FROM m1;
+DROP TABLE t1;
+SELECT * FROM m1;
+#
+#
+--echo #
+--echo #
+SHOW CREATE TABLE m1;
+--error ER_TABLE_NOT_LOCKED
+CREATE TABLE m2 SELECT * FROM m1;
+#
+--echo #
+CREATE TEMPORARY TABLE m2 SELECT * FROM m1;
+SHOW CREATE TABLE m2;
+SELECT * FROM m2;
+DROP TABLE m2;
+#
+--echo #
+CREATE TEMPORARY TABLE m2 (c1 INT, c2 INT) ENGINE=MRG_MyISAM UNION=(t3,t4)
+ INSERT_METHOD=LAST;
+SELECT * FROM m2;
+LOCK TABLE m1 WRITE, m2 WRITE;
+UNLOCK TABLES;
+DROP TABLE m2;
+LOCK TABLE m1 WRITE;
+#
+--echo #
+--echo # ER_TABLE_NOT_LOCKED is returned in ps-protocol
+--error ER_WRONG_OBJECT, ER_TABLE_NOT_LOCKED
+CREATE TABLE m2 (c1 INT, c2 INT) ENGINE=MRG_MyISAM UNION=(t3,t4)
+ INSERT_METHOD=LAST SELECT * FROM m1;
+#
+--echo #
+--error ER_WRONG_OBJECT
+CREATE TEMPORARY TABLE m2 (c1 INT, c2 INT) ENGINE=MRG_MyISAM UNION=(t3,t4)
+ INSERT_METHOD=LAST SELECT * FROM m1;
+#
+--echo #
+CREATE TEMPORARY TABLE m2 LIKE m1;
+SHOW CREATE TABLE m2;
+LOCK TABLE m1 WRITE, m2 WRITE;
+SHOW CREATE TABLE m2;
+SELECT * FROM m2;
+INSERT INTO m2 SELECT * FROM m1;
+SELECT * FROM m2;
+DROP TABLE m2;
+#
+--echo #
+CREATE TEMPORARY TABLE m2 (c1 INT, c2 INT) ENGINE=MRG_MyISAM UNION=(t3,t4)
+ INSERT_METHOD=LAST;
+LOCK TABLE m1 WRITE, m2 WRITE;
+INSERT INTO m2 SELECT * FROM m1;
+SELECT * FROM m2;
+#
+--echo #
+UNLOCK TABLES;
+DROP TABLE t1, t2, t3, t4, m1, m2;
+
+--echo #
+--echo # Bug47098 assert in MDL_context::destroy on HANDLER
+--echo # <damaged merge table> OPEN
+--echo #
+--echo # Test that merge tables are closed correctly when opened using
+--echo # HANDLER ... OPEN.
+--echo # The general case.
+connect (con1,localhost,root,,);
+CREATE TABLE t1 (c1 int);
+CREATE TABLE t2 (c1 int);
+CREATE TABLE t3 (c1 int) ENGINE = MERGE UNION (t1,t2);
+START TRANSACTION;
+--error ER_ILLEGAL_HA
+HANDLER t3 OPEN;
+DROP TABLE t1, t2, t3;
+connection default;
+--echo # all mdl_tickets must have been released.
+disconnect con1;
+--echo # The bug-specific case.
+connect (con1,localhost,root,,);
+CREATE TABLE t1 (c1 int);
+CREATE TABLE t2 (c1 int);
+CREATE TABLE t3 (c1 int) ENGINE = MERGE UNION (t1,t2);
+DROP TABLE t2;
+START TRANSACTION;
+--error ER_WRONG_MRG_TABLE
+HANDLER t3 OPEN;
+DROP TABLE t1, t3;
+connection default;
+--echo # all mdl_tickets must have been released.
+disconnect con1;
+
+--echo #
+--echo # A test case for Bug#47648 main.merge fails sporadically
+--echo #
+--echo # Make sure we correctly maintain lex->query_tables_last_own.
+--echo #
+create table t1 (c1 int not null);
+create table t2 (c1 int not null);
+create table t3 (c1 int not null);
+
+create function f1 () returns int return (select max(c1) from t3);
+
+create table t4 (c1 int not null) engine=merge union=(t1,t2) insert_method=last ;
+
+select * from t4 where c1 < f1();
+prepare stmt from "select * from t4 where c1 < f1()";
+execute stmt;
+execute stmt;
+execute stmt;
+drop function f1;
+--error ER_SP_DOES_NOT_EXIST
+execute stmt;
+--error ER_SP_DOES_NOT_EXIST
+execute stmt;
+drop table t4, t3, t2, t1;
+
+
+--echo #
+--echo # Bug#51240 ALTER TABLE of a locked MERGE table fails
+--echo #
+
+CREATE TABLE t1 (c1 INT);
+CREATE TABLE m1 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1);
+LOCK TABLE m1 WRITE;
+# This used to cause an error.
+ALTER TABLE m1 ADD INDEX (c1);
+
+UNLOCK TABLES;
+DROP TABLE m1, t1;
+
+--echo #
+--echo # Locking the merge table won't implicitly lock children.
+--echo #
+CREATE TABLE t1 (c1 INT);
+CREATE TABLE m1 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1);
+LOCK TABLE m1 WRITE;
+--error ER_TABLE_NOT_LOCKED_FOR_WRITE
+ALTER TABLE t1 ADD INDEX (c1);
+LOCK TABLE m1 WRITE, t1 WRITE;
+ALTER TABLE t1 ADD INDEX (c1);
+UNLOCK TABLES;
+DROP TABLE m1, t1;
+
+--echo #
+--echo # Test for bug #37371 "CREATE TABLE LIKE merge loses UNION parameter"
+--echo #
+create table t1 (i int) engine=myisam;
+create table m1 (i int) engine=mrg_myisam union=(t1) insert_method=first;
+create table m2 like m1;
+--echo # Table definitions should match
+show create table m1;
+show create table m2;
+drop tables m1, m2, t1;
+
+--echo #
+--echo # Test case for Bug#54811 "Assert in mysql_lock_have_duplicate()"
+--echo # Check that unique_table() works correctly for merge tables.
+--echo #
+create table t1 (a int);
+create table t2 (a int);
+create table t3 (b int);
+create view v1 as select * from t3,t1;
+create table m1 (a int) engine=merge union (t1, t2) insert_method=last;
+create table m2 (a int) engine=merge union (t1, t2) insert_method=first;
+create temporary table tmp (b int);
+insert into tmp (b) values (1);
+
+insert into t1 (a) values (1);
+insert into t3 (b) values (1);
+--error ER_UPDATE_TABLE_USED
+insert into m1 (a) values ((select max(a) from m1));
+--error ER_UPDATE_TABLE_USED
+insert into m1 (a) values ((select max(a) from m2));
+--error ER_UPDATE_TABLE_USED
+insert into m1 (a) values ((select max(a) from t1));
+--error ER_UPDATE_TABLE_USED
+insert into m1 (a) values ((select max(a) from t2));
+
+--error ER_UPDATE_TABLE_USED
+insert into m1 (a) values ((select max(a) from t3, m1));
+--error ER_UPDATE_TABLE_USED
+insert into m1 (a) values ((select max(a) from t3, m2));
+--error ER_UPDATE_TABLE_USED
+insert into m1 (a) values ((select max(a) from t3, t1));
+--error ER_UPDATE_TABLE_USED
+insert into m1 (a) values ((select max(a) from t3, t2));
+
+--error ER_UPDATE_TABLE_USED
+insert into m1 (a) values ((select max(a) from tmp, m1));
+--error ER_UPDATE_TABLE_USED
+insert into m1 (a) values ((select max(a) from tmp, m2));
+--error ER_UPDATE_TABLE_USED
+insert into m1 (a) values ((select max(a) from tmp, t1));
+--error ER_UPDATE_TABLE_USED
+insert into m1 (a) values ((select max(a) from tmp, t2));
+
+--error ER_VIEW_PREVENT_UPDATE
+insert into m1 (a) values ((select max(a) from v1));
+--error ER_VIEW_PREVENT_UPDATE
+insert into m1 (a) values ((select max(a) from tmp, v1));
+
+
+drop view v1;
+drop temporary table tmp;
+drop table t1, t2, t3, m1, m2;
+
+
+--echo #
+--echo # Bug#56494 Segfault in upgrade_shared_lock_to_exclusive() for
+--echo # REPAIR of merge table
+--echo #
+
+CREATE TABLE t1(a INT);
+ALTER TABLE t1 engine= MERGE UNION (t_not_exists);
+# This caused the segfault
+ANALYZE TABLE t1;
+CHECK TABLE t1;
+CHECKSUM TABLE t1;
+OPTIMIZE TABLE t1;
+REPAIR TABLE t1;
+
+# This caused an assert
+REPAIR TABLE t1 USE_FRM;
+
+DROP TABLE t1;
+CREATE TABLE t1(a INT);
+CREATE TABLE t2(a INT) engine= MERGE UNION (t1);
+# This caused an assert
+REPAIR TABLE t2 USE_FRM;
+
+DROP TABLE t1, t2;
+
+
+--echo #
+--echo # Bug#57002 Assert in upgrade_shared_lock_to_exclusive()
+--echo # for ALTER TABLE + MERGE tables
+--echo #
+
+CREATE TABLE t1(a INT) engine=myisam;
+CREATE TABLE m1(a INT) engine=merge UNION(t1);
+LOCK TABLES t1 READ, m1 WRITE;
+
+# This caused an assert
+--error ER_TABLE_NOT_LOCKED_FOR_WRITE
+ALTER TABLE t1 engine=myisam;
+
+UNLOCK TABLES;
+DROP TABLE m1, t1;
+
+
+--echo #
+--echo # Test for bug #11754210 - "45777: CHECK TABLE DOESN'T SHOW ALL
+--echo # PROBLEMS FOR MERGE TABLE COMPLIANCE IN 5.1"
+--echo #
+create table t1(id int) engine=myisam;
+create view t3 as select 1 as id;
+create table t4(id int) engine=memory;
+create table m1(id int) engine=merge union=(t1,t2,t3,t4);
+--error ER_WRONG_MRG_TABLE
+select * from m1;
+--echo # The below CHECK and REPAIR TABLE statements should
+--echo # report all problems with underlying tables:
+--echo # - absence of 't2',
+--echo # - missing base table for 't3',
+--echo # - wrong engine of 't4'.
+check table m1;
+repair table m1;
+--echo # Clean-up.
+drop tables m1, t1, t4;
+drop view t3;
+
+
+--echo #
+--echo # MDEV-10424 Assertion `ticket == __null' failed in MDL_request::set_type
+--echo #
+CREATE TABLE t1 (f1 INT) ENGINE=MyISAM;
+CREATE TABLE tmerge (f1 INT) ENGINE=MERGE UNION=(t1);
+PREPARE stmt FROM "ANALYZE TABLE tmerge, t1";
+EXECUTE stmt;
+EXECUTE stmt;
+DEALLOCATE PREPARE stmt;
+DROP TABLE t1, tmerge;
+
+--echo #
+--echo # End of 5.5 tests
+--echo #
+
+--echo #
+--echo # Additional coverage for refactoring which is made as part
+--echo # of fix for bug #27480 "Extend CREATE TEMPORARY TABLES privilege
+--echo # to allow temp table operations".
+--echo #
+--echo # Check that prelocking works correctly for various variants of
+--echo # merge tables.
+--echo #
+create table t1 (j int);
+insert into t1 values (1);
+create function f1() returns int return (select count(*) from m1);
+create temporary table t2 (a int) engine=myisam;
+insert into t2 values (1);
+create temporary table m1 (a int) engine=merge union=(t2);
+select f1() from t1;
+drop tables t2, m1;
+create table t2 (a int) engine=myisam;
+insert into t2 values (1);
+create table m1 (a int) engine=merge union=(t2);
+select f1() from t1;
+drop table m1;
+create temporary table m1 (a int) engine=merge union=(t2);
+select f1() from t1;
+drop tables t1, t2, m1;
+drop function f1;
+--echo #
+--echo # Check that REPAIR/CHECK and CHECKSUM statements work correctly
+--echo # for various variants of merge tables.
+create table t1 (a int) engine=myisam;
+insert into t1 values (1);
+create table m1 (a int) engine=merge union=(t1);
+check table m1;
+repair table m1;
+checksum table m1;
+drop tables t1, m1;
+create temporary table t1 (a int) engine=myisam;
+insert into t1 values (1);
+create temporary table m1 (a int) engine=merge union=(t1);
+check table m1;
+repair table m1;
+checksum table m1;
+drop tables t1, m1;
+create table t1 (a int) engine=myisam;
+insert into t1 values (1);
+create temporary table m1 (a int) engine=merge union=(t1);
+check table m1;
+repair table m1;
+checksum table m1;
+drop tables t1, m1;
+
+# Check effect of Bug#27480-preliminary patch:
+# a merge-table with non-existing children, opened from a prelocked list.
+
+CREATE TABLE t1(a INT);
+CREATE TABLE m1(a INT) ENGINE = MERGE UNION (q1, q2);
+
+CREATE TRIGGER trg1 BEFORE DELETE ON t1
+FOR EACH ROW
+ INSERT INTO m1 VALUES (1);
+
+--error ER_WRONG_MRG_TABLE
+DELETE FROM t1;
+
+DROP TRIGGER trg1;
+DROP TABLE t1;
+DROP TABLE m1;
+
+set global default_storage_engine=@save_default_storage_engine;
+
+# Check that all connections opened by test cases in this file are really
+# gone so execution of other tests won't be affected by their presence.
+--source include/wait_until_count_sessions.inc
+
+--echo #
+--echo # MDEV-27407 Different ASC/DESC index attributes on MERGE and underlying table can cause wrong results
+--echo #
+create table t (a int, key(a desc)) engine=myisam;
+create table tm (a int, key(a)) engine=merge union(t);
+--error ER_WRONG_MRG_TABLE
+select * from tm;
+drop table tm, t;
+
+--echo #
+--echo # MDEV-27586 Auto-increment does not work with DESC on MERGE table
+--echo #
+create table t (a int not null, primary key(a desc)) engine=myisam;
+create table tm (a int not null auto_increment, primary key(a desc)) engine=merge union=(t) insert_method=first;
+insert into tm () values ();
+insert into tm () values ();
+insert into tm () values ();
+select * from tm;
+drop table tm, t;
+
+--echo #
+--echo # End of 10.8 tests
+--echo #
+
+--echo #
+--echo # MDEV-30088 Assertion `cond_selectivity <= 1.0' failed in get_range_limit_read_cost
+--echo #
+
+CREATE TABLE t1 (a TIMESTAMP, KEY(a)) ENGINE=MRG_MyISAM;
+explain SELECT a, COUNT(*) FROM t1 WHERE a >= '2000-01-01 00:00:00' GROUP BY a;
+SELECT a, COUNT(*) FROM t1 WHERE a >= '2000-01-01 00:00:00' GROUP BY a;
+DROP TABLE t1;
+
+--echo #
+--echo # MDEV-30525: Assertion `ranges > 0' fails in IO_AND_CPU_COST handler::keyread_time
+--echo #
+CREATE TABLE t1 (a INT, KEY(a)) ENGINE=MyISAM;
+CREATE TABLE t2 (a INT, KEY(a)) ENGINE=MyISAM;
+CREATE TABLE tm (a INT, KEY(a)) ENGINE=MRG_MyISAM UNION=(t1,t2);
+SELECT DISTINCT a FROM tm WHERE a > 50;
+DROP TABLE tm, t1, t2;
+
+--echo # Testcase 2:
+CREATE TABLE t1 (a INT, KEY(a)) ENGINE=MyISAM;
+CREATE TABLE t2 (a INT, KEY(a)) ENGINE=MyISAM;
+CREATE TABLE tm (a INT, KEY(a)) ENGINE=MERGE UNION = (t1, t2) INSERT_METHOD=FIRST;
+ANALYZE TABLE tm PERSISTENT FOR ALL;
+SELECT DISTINCT a FROM (SELECT * FROM tm WHERE a iS NOT NULL) AS sq;
+DROP TABLE tm, t1, t2;
+
+--echo #
+--echo # MDEV-30568 Assertion `cond_selectivity <= 1.000000001' failed in get_range_limit_read_cost
+--echo #
+CREATE TABLE t1 (f INT, KEY(f)) ENGINE=MyISAM;
+CREATE TABLE t2 (f INT, KEY(f)) ENGINE=MyISAM;
+CREATE TABLE tm (f INT, KEY(f)) ENGINE=MERGE UNION = (t1, t2);
+SELECT DISTINCT f FROM tm WHERE f IN (47, 126, 97, 48, 73, 0);
+DROP TABLE tm, t1, t2;
+
+--echo #
+--echo # MDEV-30786 SIGFPE in cost_group_min_max on EXP
+--echo #
+SET use_stat_tables='preferably';
+CREATE TABLE t1 (a INT,b INT,KEY i1 (a),KEY i2 (b)) ENGINE=MRG_MyISAM;
+ANALYZE LOCAL TABLE t1;
+EXPLAIN SELECT DISTINCT a FROM t1;
+drop table t1;
+set use_stat_tables=default;
+
+--echo #
+--echo # End of 11.0 tests
+--echo #
+--echo #
+--echo # MDEV-29174: UPDATE of view that uses MERGE table
+--echo #
+
+CREATE TABLE t1 (a int) ENGINE=MERGE;
+CREATE VIEW v1 AS SELECT a FROM t1;
+UPDATE v1 SET a=0;
+DROP VIEW v1;
+DROP TABLE t1;
+
+--echo # End of 11.1 tests
diff --git a/mysql-test/suite/merge/merge_debug.result b/mysql-test/suite/merge/merge_debug.result
new file mode 100644
index 00000000000..36cf254f87e
--- /dev/null
+++ b/mysql-test/suite/merge/merge_debug.result
@@ -0,0 +1,27 @@
+set @default_storage_engine= @@global.default_storage_engine;
+set global default_storage_engine=myisam;
+set session default_storage_engine=myisam;
+call mtr.add_suppression("Index for table .*crashed' is corrupt; try to repair it");
+drop table if exists crashed,t2,t3,t4;
+SET @orig_debug=@@global.debug_dbug;
+CREATE TABLE crashed (c1 INT);
+CREATE TABLE t2 (c1 INT);
+CREATE TABLE t3 (c1 INT);
+CREATE TABLE t4 (c1 INT) ENGINE=MRG_MYISAM UNION=(crashed,t2,t3) INSERT_METHOD=LAST;
+INSERT INTO crashed VALUES (10);
+INSERT INTO t2 VALUES (20);
+INSERT INTO t3 VALUES (30);
+LOCK TABLES t3 WRITE, t2 WRITE, t4 WRITE, crashed WRITE;
+SET GLOBAL debug_dbug="+d,myisam_pretend_crashed_table_on_open";
+CREATE TRIGGER t1_ai AFTER INSERT ON crashed FOR EACH ROW INSERT INTO t2 VALUES(29);
+SET GLOBAL debug_dbug=@orig_debug;
+INSERT INTO t4 VALUES (39);
+ERROR HY000: Table 'crashed' was not locked with LOCK TABLES
+INSERT INTO crashed VALUES (11);
+ERROR HY000: Table 'crashed' was not locked with LOCK TABLES
+INSERT INTO t2 VALUES (21);
+INSERT INTO t3 VALUES (31);
+UNLOCK TABLES;
+DROP TRIGGER t1_ai;
+DROP TABLE t4,crashed,t2,t3;
+set global default_storage_engine=@default_storage_engine;
diff --git a/mysql-test/suite/merge/merge_debug.test b/mysql-test/suite/merge/merge_debug.test
new file mode 100644
index 00000000000..4141042c261
--- /dev/null
+++ b/mysql-test/suite/merge/merge_debug.test
@@ -0,0 +1,46 @@
+#
+# Test failures with MERGE
+#
+
+--source include/have_debug.inc
+
+set @default_storage_engine= @@global.default_storage_engine;
+set global default_storage_engine=myisam;
+set session default_storage_engine=myisam;
+
+call mtr.add_suppression("Index for table .*crashed' is corrupt; try to repair it");
+
+--disable_warnings
+drop table if exists crashed,t2,t3,t4;
+--enable_warnings
+
+SET @orig_debug=@@global.debug_dbug;
+
+#
+# Check that MariaDB handles reopen that fails without crashing
+#
+CREATE TABLE crashed (c1 INT);
+CREATE TABLE t2 (c1 INT);
+CREATE TABLE t3 (c1 INT);
+CREATE TABLE t4 (c1 INT) ENGINE=MRG_MYISAM UNION=(crashed,t2,t3) INSERT_METHOD=LAST;
+INSERT INTO crashed VALUES (10);
+INSERT INTO t2 VALUES (20);
+INSERT INTO t3 VALUES (30);
+
+LOCK TABLES t3 WRITE, t2 WRITE, t4 WRITE, crashed WRITE;
+SET GLOBAL debug_dbug="+d,myisam_pretend_crashed_table_on_open";
+--disable_warnings
+CREATE TRIGGER t1_ai AFTER INSERT ON crashed FOR EACH ROW INSERT INTO t2 VALUES(29);
+--enable_warnings
+SET GLOBAL debug_dbug=@orig_debug;
+--error ER_TABLE_NOT_LOCKED
+INSERT INTO t4 VALUES (39);
+--error ER_TABLE_NOT_LOCKED
+INSERT INTO crashed VALUES (11);
+INSERT INTO t2 VALUES (21);
+INSERT INTO t3 VALUES (31);
+UNLOCK TABLES;
+DROP TRIGGER t1_ai;
+DROP TABLE t4,crashed,t2,t3;
+
+set global default_storage_engine=@default_storage_engine;
diff --git a/mysql-test/suite/merge/merge_innodb.result b/mysql-test/suite/merge/merge_innodb.result
new file mode 100644
index 00000000000..5aa344a9391
--- /dev/null
+++ b/mysql-test/suite/merge/merge_innodb.result
@@ -0,0 +1,70 @@
+DROP TABLE IF EXISTS t1, t2, t3, t4, t5;
+CREATE TABLE t1 (c1 varchar(100)) ENGINE=MyISAM;
+CREATE TABLE t2 (c1 varchar(100)) ENGINE=MyISAM;
+CREATE TABLE t3 (c1 varchar(100)) ENGINE=InnoDB;
+INSERT INTO t1 VALUES ('Ann'), ('Alice');
+INSERT INTO t2 VALUES ('Bob'), ('Brian');
+INSERT INTO t3 VALUES ('Chris'), ('Charlie');
+CREATE TABLE t4 (c1 varchar(100)) ENGINE=MRG_MYISAM UNION=(t1,t2)
+INSERT_METHOD=LAST;
+CREATE TABLE t5 (c1 varchar(100)) ENGINE=MRG_MYISAM UNION=(t1,t3)
+INSERT_METHOD=LAST;
+SELECT * FROM t5;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+SELECT * FROM t4;
+c1
+Ann
+Alice
+Bob
+Brian
+ALTER TABLE t2 ENGINE=InnoDB;
+SELECT * FROM t4;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+DELETE FROM t2 LIMIT 1;
+SELECT * FROM t4;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+INSERT INTO t4 VALUES ('Beware');
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+SELECT * FROM t4;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+SELECT * FROM t2;
+c1
+Brian
+SELECT * FROM t1;
+c1
+Ann
+Alice
+DROP TABLE t1, t2, t3, t4, t5;
+create table t1 (c1 varchar(100));
+create table t2 (c1 varchar(100));
+create view t3 as select * from t1;
+insert into t1 values ('ann'), ('alice');
+insert into t2 values ('bob'), ('brian');
+create temporary table t4 (c1 varchar(100)) engine=MERGE union=(t2, t1);
+create temporary table t5 (c1 varchar(100)) engine=MERGE union=(t3, t1);
+select * from t5;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+lock tables t1 read, t2 read, t3 read, t4 read;
+select * from t5;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+select * from t4;
+c1
+bob
+brian
+ann
+alice
+unlock tables;
+drop table t2;
+create view t2 as select * from t1;
+select * from t4;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+lock tables t1 read, t2 read, t3 read;
+select * from t4;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+select * from t4;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+select * from t4;
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
+unlock tables;
+drop view t2, t3;
+drop table t1;
diff --git a/mysql-test/suite/merge/merge_innodb.test b/mysql-test/suite/merge/merge_innodb.test
new file mode 100644
index 00000000000..9f87f241d00
--- /dev/null
+++ b/mysql-test/suite/merge/merge_innodb.test
@@ -0,0 +1,72 @@
+# t/merge_innodb.test
+#
+# Tests with MERGE tables over InnoDB tables
+#
+
+--source include/have_innodb.inc
+
+--disable_warnings
+DROP TABLE IF EXISTS t1, t2, t3, t4, t5;
+--enable_warnings
+
+#
+# Bug#30491 - MERGE doesn't report error when one table is Innodb
+#
+CREATE TABLE t1 (c1 varchar(100)) ENGINE=MyISAM;
+CREATE TABLE t2 (c1 varchar(100)) ENGINE=MyISAM;
+CREATE TABLE t3 (c1 varchar(100)) ENGINE=InnoDB;
+INSERT INTO t1 VALUES ('Ann'), ('Alice');
+INSERT INTO t2 VALUES ('Bob'), ('Brian');
+INSERT INTO t3 VALUES ('Chris'), ('Charlie');
+CREATE TABLE t4 (c1 varchar(100)) ENGINE=MRG_MYISAM UNION=(t1,t2)
+ INSERT_METHOD=LAST;
+CREATE TABLE t5 (c1 varchar(100)) ENGINE=MRG_MYISAM UNION=(t1,t3)
+ INSERT_METHOD=LAST;
+--error ER_WRONG_MRG_TABLE
+SELECT * FROM t5;
+SELECT * FROM t4;
+ALTER TABLE t2 ENGINE=InnoDB;
+--error ER_WRONG_MRG_TABLE
+SELECT * FROM t4;
+DELETE FROM t2 LIMIT 1;
+--error ER_WRONG_MRG_TABLE
+SELECT * FROM t4;
+--error ER_WRONG_MRG_TABLE
+INSERT INTO t4 VALUES ('Beware');
+--error ER_WRONG_MRG_TABLE
+SELECT * FROM t4;
+SELECT * FROM t2;
+SELECT * FROM t1;
+DROP TABLE t1, t2, t3, t4, t5;
+
+#
+# Bug#20691429 temporary merge over view under lock tables
+#
+create table t1 (c1 varchar(100));
+create table t2 (c1 varchar(100));
+create view t3 as select * from t1;
+insert into t1 values ('ann'), ('alice');
+insert into t2 values ('bob'), ('brian');
+create temporary table t4 (c1 varchar(100)) engine=MERGE union=(t2, t1);
+create temporary table t5 (c1 varchar(100)) engine=MERGE union=(t3, t1);
+--error ER_WRONG_MRG_TABLE
+select * from t5;
+lock tables t1 read, t2 read, t3 read, t4 read;
+--error ER_WRONG_MRG_TABLE
+select * from t5;
+select * from t4;
+unlock tables;
+drop table t2;
+create view t2 as select * from t1;
+--error ER_WRONG_MRG_TABLE
+select * from t4;
+lock tables t1 read, t2 read, t3 read;
+--error ER_WRONG_MRG_TABLE
+select * from t4;
+--error ER_WRONG_MRG_TABLE
+select * from t4;
+--error ER_WRONG_MRG_TABLE
+select * from t4;
+unlock tables;
+drop view t2, t3;
+drop table t1;
diff --git a/mysql-test/suite/merge/merge_mmap-master.opt b/mysql-test/suite/merge/merge_mmap-master.opt
new file mode 100644
index 00000000000..9606fb57187
--- /dev/null
+++ b/mysql-test/suite/merge/merge_mmap-master.opt
@@ -0,0 +1 @@
+--myisam-use-mmap
diff --git a/mysql-test/suite/merge/merge_mmap.result b/mysql-test/suite/merge/merge_mmap.result
new file mode 100644
index 00000000000..8e655a0491b
--- /dev/null
+++ b/mysql-test/suite/merge/merge_mmap.result
@@ -0,0 +1,190 @@
+SET GLOBAL default_storage_engine = MyISAM;
+SET SESSION default_storage_engine = MyISAM;
+DROP TABLE IF EXISTS t1, t2, m1, m2;
+CREATE TABLE t1 (c1 INT);
+CREATE TABLE t2 (c1 INT);
+CREATE TABLE m1 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+INSERT_METHOD=LAST;
+CREATE TABLE m2 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+INSERT_METHOD=LAST;
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2), (3), (4);
+INSERT INTO m2 SELECT * FROM m1;
+SELECT * FROM m2;
+c1
+1
+2
+3
+4
+1
+2
+3
+4
+SELECT * FROM t2;
+c1
+2
+3
+4
+1
+2
+3
+4
+DROP TABLE m2, m1, t2, t1;
+CREATE TABLE t1 (c1 INT);
+CREATE TABLE t2 (c1 INT);
+CREATE TEMPORARY TABLE m1 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+INSERT_METHOD=LAST;
+CREATE TABLE m2 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+INSERT_METHOD=LAST;
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2), (3), (4);
+INSERT INTO m2 SELECT * FROM m1;
+SELECT * FROM m2;
+c1
+1
+2
+3
+4
+1
+2
+3
+4
+DROP TABLE m2, m1, t2, t1;
+CREATE TABLE t1 (c1 INT);
+CREATE TABLE t2 (c1 INT);
+CREATE TABLE m1 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+INSERT_METHOD=LAST;
+CREATE TEMPORARY TABLE m2 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+INSERT_METHOD=LAST;
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2), (3), (4);
+INSERT INTO m2 SELECT * FROM m1;
+SELECT * FROM m2;
+c1
+1
+2
+3
+4
+1
+2
+3
+4
+DROP TABLE m2, m1, t2, t1;
+CREATE TABLE t1 (c1 INT);
+CREATE TABLE t2 (c1 INT);
+CREATE TEMPORARY TABLE m1 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+INSERT_METHOD=LAST;
+CREATE TEMPORARY TABLE m2 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+INSERT_METHOD=LAST;
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2), (3), (4);
+INSERT INTO m2 SELECT * FROM m1;
+SELECT * FROM m2;
+c1
+1
+2
+3
+4
+1
+2
+3
+4
+DROP TABLE m2, m1, t2, t1;
+CREATE TABLE t1 (c1 INT);
+CREATE TABLE t2 (c1 INT);
+CREATE TABLE m1 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+INSERT_METHOD=LAST;
+CREATE TABLE m2 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+INSERT_METHOD=LAST;
+LOCK TABLE m1 WRITE, m2 WRITE;
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2), (3), (4);
+INSERT INTO m2 SELECT * FROM m1;
+SELECT * FROM m2;
+c1
+1
+2
+3
+4
+1
+2
+3
+4
+SELECT * FROM t2;
+c1
+2
+3
+4
+1
+2
+3
+4
+UNLOCK TABLES;
+DROP TABLE m2, m1, t2, t1;
+CREATE TABLE t1 (c1 INT);
+CREATE TABLE t2 (c1 INT);
+CREATE TEMPORARY TABLE m1 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+INSERT_METHOD=LAST;
+CREATE TABLE m2 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+INSERT_METHOD=LAST;
+LOCK TABLE m1 WRITE, m2 WRITE;
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2), (3), (4);
+INSERT INTO m2 SELECT * FROM m1;
+SELECT * FROM m2;
+c1
+1
+2
+3
+4
+1
+2
+3
+4
+UNLOCK TABLES;
+DROP TABLE m2, m1, t2, t1;
+CREATE TABLE t1 (c1 INT);
+CREATE TABLE t2 (c1 INT);
+CREATE TABLE m1 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+INSERT_METHOD=LAST;
+CREATE TEMPORARY TABLE m2 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+INSERT_METHOD=LAST;
+LOCK TABLE m1 WRITE, m2 WRITE;
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2), (3), (4);
+INSERT INTO m2 SELECT * FROM m1;
+SELECT * FROM m2;
+c1
+1
+2
+3
+4
+1
+2
+3
+4
+UNLOCK TABLES;
+DROP TABLE m2, m1, t2, t1;
+CREATE TABLE t1 (c1 INT);
+CREATE TABLE t2 (c1 INT);
+CREATE TEMPORARY TABLE m1 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+INSERT_METHOD=LAST;
+CREATE TEMPORARY TABLE m2 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+INSERT_METHOD=LAST;
+LOCK TABLE m1 WRITE, m2 WRITE;
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2), (3), (4);
+INSERT INTO m2 SELECT * FROM m1;
+SELECT * FROM m2;
+c1
+1
+2
+3
+4
+1
+2
+3
+4
+UNLOCK TABLES;
+DROP TABLE m2, m1, t2, t1;
+End of 6.0 tests
diff --git a/mysql-test/suite/merge/merge_mmap.test b/mysql-test/suite/merge/merge_mmap.test
new file mode 100644
index 00000000000..01c3896bd02
--- /dev/null
+++ b/mysql-test/suite/merge/merge_mmap.test
@@ -0,0 +1,153 @@
+#
+# Test of MERGE TABLES with MyISAM memory mapping enabled (--myisam-use-mmap)
+#
+
+# MERGE tables require MyISAM tables
+--let $default=`SELECT @@global.default_storage_engine`
+SET GLOBAL default_storage_engine = MyISAM;
+SET SESSION default_storage_engine = MyISAM;
+
+# Clean up resources used in this test case.
+--disable_warnings
+DROP TABLE IF EXISTS t1, t2, m1, m2;
+--enable_warnings
+
+####################
+## No locked tables.
+####################
+#
+# INSERT-SELECT with no TEMPORARY table.
+#
+CREATE TABLE t1 (c1 INT);
+CREATE TABLE t2 (c1 INT);
+CREATE TABLE m1 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+ INSERT_METHOD=LAST;
+CREATE TABLE m2 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+ INSERT_METHOD=LAST;
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2), (3), (4);
+INSERT INTO m2 SELECT * FROM m1;
+SELECT * FROM m2;
+SELECT * FROM t2;
+DROP TABLE m2, m1, t2, t1;
+#
+# INSERT-SELECT with TEMPORARY select table.
+#
+CREATE TABLE t1 (c1 INT);
+CREATE TABLE t2 (c1 INT);
+CREATE TEMPORARY TABLE m1 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+ INSERT_METHOD=LAST;
+CREATE TABLE m2 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+ INSERT_METHOD=LAST;
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2), (3), (4);
+INSERT INTO m2 SELECT * FROM m1;
+SELECT * FROM m2;
+DROP TABLE m2, m1, t2, t1;
+#
+# INSERT-SELECT with TEMPORARY insert table.
+#
+CREATE TABLE t1 (c1 INT);
+CREATE TABLE t2 (c1 INT);
+CREATE TABLE m1 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+ INSERT_METHOD=LAST;
+CREATE TEMPORARY TABLE m2 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+ INSERT_METHOD=LAST;
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2), (3), (4);
+INSERT INTO m2 SELECT * FROM m1;
+SELECT * FROM m2;
+DROP TABLE m2, m1, t2, t1;
+#
+# INSERT-SELECT with TEMPORARY both tables.
+#
+CREATE TABLE t1 (c1 INT);
+CREATE TABLE t2 (c1 INT);
+CREATE TEMPORARY TABLE m1 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+ INSERT_METHOD=LAST;
+CREATE TEMPORARY TABLE m2 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+ INSERT_METHOD=LAST;
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2), (3), (4);
+INSERT INTO m2 SELECT * FROM m1;
+SELECT * FROM m2;
+DROP TABLE m2, m1, t2, t1;
+
+####################
+## With LOCK TABLES.
+####################
+#
+# INSERT-SELECT with no TEMPORARY table.
+#
+--disable_service_connection
+CREATE TABLE t1 (c1 INT);
+CREATE TABLE t2 (c1 INT);
+CREATE TABLE m1 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+ INSERT_METHOD=LAST;
+CREATE TABLE m2 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+ INSERT_METHOD=LAST;
+LOCK TABLE m1 WRITE, m2 WRITE;
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2), (3), (4);
+INSERT INTO m2 SELECT * FROM m1;
+SELECT * FROM m2;
+SELECT * FROM t2;
+UNLOCK TABLES;
+DROP TABLE m2, m1, t2, t1;
+#
+# INSERT-SELECT with TEMPORARY select table.
+#
+CREATE TABLE t1 (c1 INT);
+CREATE TABLE t2 (c1 INT);
+CREATE TEMPORARY TABLE m1 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+ INSERT_METHOD=LAST;
+CREATE TABLE m2 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+ INSERT_METHOD=LAST;
+LOCK TABLE m1 WRITE, m2 WRITE;
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2), (3), (4);
+INSERT INTO m2 SELECT * FROM m1;
+SELECT * FROM m2;
+UNLOCK TABLES;
+DROP TABLE m2, m1, t2, t1;
+#
+# INSERT-SELECT with TEMPORARY insert table.
+#
+CREATE TABLE t1 (c1 INT);
+CREATE TABLE t2 (c1 INT);
+CREATE TABLE m1 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+ INSERT_METHOD=LAST;
+CREATE TEMPORARY TABLE m2 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+ INSERT_METHOD=LAST;
+LOCK TABLE m1 WRITE, m2 WRITE;
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2), (3), (4);
+INSERT INTO m2 SELECT * FROM m1;
+SELECT * FROM m2;
+UNLOCK TABLES;
+DROP TABLE m2, m1, t2, t1;
+#
+# INSERT-SELECT with TEMPORARY both tables.
+#
+CREATE TABLE t1 (c1 INT);
+CREATE TABLE t2 (c1 INT);
+CREATE TEMPORARY TABLE m1 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+ INSERT_METHOD=LAST;
+CREATE TEMPORARY TABLE m2 (c1 INT) ENGINE=MRG_MyISAM UNION=(t1,t2)
+ INSERT_METHOD=LAST;
+LOCK TABLE m1 WRITE, m2 WRITE;
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2), (3), (4);
+INSERT INTO m2 SELECT * FROM m1;
+SELECT * FROM m2;
+UNLOCK TABLES;
+DROP TABLE m2, m1, t2, t1;
+--enable_service_connection
+
+--echo End of 6.0 tests
+
+--disable_result_log
+--disable_query_log
+eval SET GLOBAL default_storage_engine = $default;
+--enable_result_log
+--enable_query_log