81 lines
1.5 KiB
Plaintext
81 lines
1.5 KiB
Plaintext
set global innodb_file_per_table = 0;
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DROP TABLE IF EXISTS t1,t2;
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select @@global.innodb_change_buffering;
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@@global.innodb_change_buffering
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all
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create temporary table t1
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(keyc int, c1 char(100), c2 char(100),
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primary key(keyc)) engine = innodb;
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create index idx on t1(keyc, c1(20));
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create procedure populate_t1(IN rows INT)
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begin
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declare i int default 1;
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while (i <= rows) DO
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insert into t1 values (i, 'a', 'b');
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set i = i + 1;
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end while;
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end|
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set autocommit=0;
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select count(*) from t1;
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count(*)
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0
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call populate_t1(1000);
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select count(*) from t1;
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count(*)
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1000
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select * from t1 limit 10;
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keyc c1 c2
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1 a b
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2 a b
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3 a b
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4 a b
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5 a b
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6 a b
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7 a b
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8 a b
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9 a b
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10 a b
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commit;
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update t1 set keyc = -1 * keyc where keyc%50 = 0;
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select count(*) from t1 where keyc < 0;
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count(*)
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20
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drop table t1;
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set @@global.innodb_change_buffering = none ;
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select @@global.innodb_change_buffering;
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@@global.innodb_change_buffering
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none
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create temporary table t1
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(keyc int, c1 char(100), c2 char(100),
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primary key(keyc)) engine = innodb;
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create index idx on t1(keyc, c1(20));
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set autocommit=0;
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select count(*) from t1;
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count(*)
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0
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CALL populate_t1(1000);
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select count(*) from t1;
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count(*)
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1000
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select * from t1 limit 10;
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keyc c1 c2
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1 a b
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2 a b
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3 a b
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4 a b
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5 a b
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6 a b
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7 a b
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8 a b
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9 a b
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10 a b
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commit;
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update t1 set keyc = -1 * keyc where keyc%50 = 0;
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select count(*) from t1 where keyc < 0;
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count(*)
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20
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drop table t1;
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drop procedure if exists populate_t1;
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set global innodb_change_buffering = all;
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set global innodb_file_per_table = default;
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