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#
# WL#6469: Optimizing CREATE/DROP performance for temporary tables
#
--source include/no_valgrind_without_big.inc
#########################################################################
# #
# Will test following scenarios: #
# 1. Vary innodb_change_buffering value for temp-table #
#########################################################################
#-------------------------------------------------------------
#
# create test-bed.
#
let $change_buffer_value = `select @@global.innodb_change_buffering`;
set global innodb_file_per_table = 0;
#-------------------------------------------------------------
#
# 1. Vary innodb_change_buffering value
#
--disable_warnings
DROP TABLE IF EXISTS t1,t2;
--enable_warnings
select @@global.innodb_change_buffering;
create temporary table t1
(keyc int, c1 char(100), c2 char(100),
primary key(keyc)) engine = innodb;
create index idx on t1(keyc, c1(20));
delimiter |;
create procedure populate_t1(IN `rows` INT)
begin
declare i int default 1;
while (i <= `rows`) 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(1000);
select count(*) from t1;
select * from t1 limit 10;
commit;
update t1 set keyc = -1 * keyc where keyc%50 = 0;
select count(*) from t1 where keyc < 0;
drop table t1;
# change innodb_change_buffering value to none
set @@global.innodb_change_buffering = none ;
select @@global.innodb_change_buffering;
create temporary table t1
(keyc int, c1 char(100), c2 char(100),
primary key(keyc)) engine = innodb;
create index idx on t1(keyc, c1(20));
set autocommit=0;
select count(*) from t1;
CALL populate_t1(1000);
select count(*) from t1;
select * from t1 limit 10;
commit;
update t1 set keyc = -1 * keyc where keyc%50 = 0;
select count(*) from t1 where keyc < 0;
drop table t1;
drop procedure if exists populate_t1;
eval set global innodb_change_buffering = $change_buffer_value;
#-------------------------------------------------------------
#
# remove test-bed.
#
set global innodb_file_per_table = default;
|
