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#
# WL#6469: Optimizing CREATE/DROP performance for temporary tables
#
--source include/no_valgrind_without_big.inc
--source include/have_innodb.inc
#########################################################################
# #
# Will test following scenarios: #
# 1. Create/Drop of temp-table. (with and w/o explicit pk) #
# 2. Truncate temp-table (result in table drop and recreate). #
# 3. Alter of temp-table. #
# 4. Import/Discard of temp-table (to check blocked action) #
# 5. Renaming of temp-table #
# 6. Creating temp-table with large prefix. #
# 7. Check Temp table info not stored in InnoDB system tables #
#########################################################################
#-------------------------------------------------------------
#
# 1. Create/Drop of temp-table. (with and w/o explicit pk) #
#
create temporary table t1 (i int) engine = innodb;
insert into t1 values (1), (2), (3), (4);
select * from t1;
select * from t1 where i = 4;
drop table t1;
#
# recreate table wih same name to ensure entries are removed.
create temporary table t1 (i int) engine = innodb;
insert into t1 values (1), (2), (3), (4);
select * from t1;
select * from t1 where i = 4;
drop table t1;
#
create temporary table t2 (i int) engine = innodb;
insert into t2 values (1), (2), (3), (4);
select * from t2;
select * from t2 where i = 4;
drop table t2;
#-------------------------------------------------------------
#
# 2. Truncate temp-table (result in table drop and recreate). #
#
create temporary table t1
(keyc int, c1 char(100), c2 char(100),
primary key(keyc)) engine = innodb;
delimiter |;
create procedure populate_t1()
begin
declare i int default 1;
while (i <= 200) DO
insert into t1 values (i, 'a', 'b');
set i = i + 1;
end while;
end|
delimiter ;|
set autocommit=0;
select count(*) from t1;
call populate_t1();
select count(*) from t1;
select * from t1 limit 10;
set autocommit=1;
truncate table t1;
select count(*) from t1;
drop table t1;
#
# recreate table wih same name to ensure entries are removed.
create temporary table t1 (i int) engine = innodb;
insert into t1 values (1), (2), (3), (4);
select * from t1;
select * from t1 where i = 4;
drop table t1;
#
create temporary table t1
(keyc int, c1 char(100), c2 char(100),
primary key(keyc))
engine = innodb;
begin;
select count(*) from t1;
call populate_t1();
select count(*) from t1;
rollback;
select count(*) from t1;
begin;
call populate_t1();
commit;
select count(*) from t1;
truncate table t1;
select count(*) from t1;
drop table t1;
#
drop procedure populate_t1;
#-------------------------------------------------------------
#
# 3. Alter of temp-table.
#
create temporary table t1 (t1_i int, t1_f float) engine = innodb;
insert into t1 values (1, 1.1), (2, 2.5), (3, 2.5), (4, 4.4);
#
explain select * from t1 where t1_i = 1;
alter table t1 add unique index pri_index(t1_i);
explain select * from t1 where t1_i = 1;
select * from t1 where t1_i = 1;
#
--error ER_DUP_ENTRY
alter table t1 add unique index sec_index(t1_f);
alter table t1 add index sec_index(t1_f);
explain select * from t1 where t1_f >= 2.5;
select * from t1 where t1_f >= 2.5;
#
alter table t1 add column (t1_c char(10));
select * from t1;
insert into t1 values (5, 5.5, 'krunal');
#
alter table t1 drop column t1_f;
show create table t1;
--error ER_BAD_FIELD_ERROR
select * from t1 where t1_f >= 2.5;
#
--error ER_ALTER_OPERATION_NOT_SUPPORTED
alter table t1 add index sec_index2(t1_c), algorithm=inplace;
#
drop table t1;
#-------------------------------------------------------------
#
# 4. Import/Discard of temp-table (to check blocked action)
#
create temporary table t1 (i int, f float) engine = innodb;
insert into t1 values (10, 1.1), (20, 2.2);
select * from t1;
#
--error ER_CANNOT_DISCARD_TEMPORARY_TABLE
alter table t1 discard tablespace;
--error ER_CANNOT_DISCARD_TEMPORARY_TABLE
alter table t1 import tablespace;
drop table t1;
#-------------------------------------------------------------
#
# 5. Renaming of temp-table #
#
create temporary table t1 (i int) engine=innodb;
insert into t1 values (1), (2), (3);
select * from t1;
#
alter table t1 rename t2;
--error ER_NO_SUCH_TABLE
select * from t1;
select * from t2;
insert into t2 values (1), (2), (6), (7);
select * from t2;
drop table t2;
#-------------------------------------------------------------
#
# 6. Creating temp-table with large prefix. #
#
SET sql_mode = 'NO_ENGINE_SUBSTITUTION';
# This will lead to warnings on innodb_page_size=8k or 4k:
# 8k: Specified key was too long; max key length is 1536 bytes
# 4k: Specified key was too long; max key length is 768 bytes
--disable_warnings
#
create temporary table t (
a int not null,
b blob not null,
index sk (b(3021))
) row_format = dynamic engine=innodb;
drop table t;
#
create temporary table t (
a int not null,
b blob not null,
index sk (b(3021))
) row_format = dynamic engine=innodb;
drop table t;
#
create temporary table t (
a int not null,
b blob not null,
index sk (b(3021))
) row_format = dynamic engine=innodb;
drop table t;
#
SET innodb_strict_mode=OFF;
--error ER_INDEX_COLUMN_TOO_LONG
create temporary table t (
a int not null,
b blob not null,
index sk (b(3021))
) row_format = compact engine=innodb;
#
create temporary table t (
a int not null,
b blob not null,
index sk (b(3021))
) row_format = dynamic engine=innodb;
drop table t;
#
create temporary table t (
a int not null,
b blob not null,
index sk (b(3021))
) row_format = compressed engine=innodb;
drop table t;
#
--error ER_INDEX_COLUMN_TOO_LONG
create temporary table t (
a int not null,
b blob not null,
index sk (b(3021))
) row_format = compact engine=innodb;
#
create temporary table t (
a int not null,
b blob not null,
index sk (b(3021))
) row_format = dynamic engine=innodb;
drop table t;
--enable_warnings
#
#-------------------------------------------------------------
#
# 7. Temp table info not stored in I_S
#
CREATE TABLE t1 ( i INT ) ENGINE = Innodb;
CREATE TEMPORARY TABLE t2 ( i INT ) ENGINE = Innodb;
SELECT COUNT(*) FROM information_schema.INNODB_SYS_TABLES WHERE NAME LIKE '%test%t_';
CREATE TEMPORARY table t3 ( i INT ) ENGINE = Innodb;
SELECT COUNT(*) FROM information_schema.INNODB_SYS_TABLES WHERE NAME LIKE '%test%t_';
DROP TABLE t1,t2,t3;
SELECT COUNT(*) FROM information_schema.INNODB_SYS_TABLES WHERE NAME LIKE '%test%t_';
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