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113 lines
2 KiB
Text
113 lines
2 KiB
Text
-- source include/have_innodb.inc
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connect (con1,localhost,root,,);
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connect (con2,localhost,root,,);
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--disable_warnings
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drop table if exists t1,t2;
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--enable_warnings
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#
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# Testing of FOR UPDATE
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#
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connection con1;
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create table t1 (id integer, x integer) engine=INNODB;
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insert into t1 values(0, 0);
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set autocommit=0;
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SELECT * from t1 where id = 0 FOR UPDATE;
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connection con2;
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set autocommit=0;
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# The following query should hang because con1 is locking the page
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--send
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update t1 set x=2 where id = 0;
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--sleep 2;
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connection con1;
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update t1 set x=1 where id = 0;
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select * from t1;
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commit;
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connection con2;
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reap;
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commit;
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connection con1;
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select * from t1;
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commit;
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drop table t1;
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#
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# Testing of FOR UPDATE
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#
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connection con1;
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create table t1 (id integer, x integer) engine=INNODB;
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create table t2 (b integer, a integer) engine=INNODB;
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insert into t1 values(0, 0), (300, 300);
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insert into t2 values(0, 10), (1, 20), (2, 30);
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commit;
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set autocommit=0;
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select * from t2;
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update t2 set a=100 where b=(SELECT x from t1 where id = b FOR UPDATE);
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select * from t2;
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select * from t1;
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connection con2;
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set autocommit=0;
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# The following query should hang because con1 is locking the page
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--send
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update t1 set x=2 where id = 0;
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--sleep 2;
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connection con1;
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update t1 set x=1 where id = 0;
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select * from t1;
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commit;
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connection con2;
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reap;
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commit;
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connection con1;
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select * from t1;
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commit;
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drop table t1, t2;
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create table t1 (id integer, x integer) engine=INNODB;
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create table t2 (b integer, a integer) engine=INNODB;
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insert into t1 values(0, 0), (300, 300);
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insert into t2 values(0, 0), (1, 20), (2, 30);
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commit;
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connection con1;
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select a,b from t2 UNION SELECT id, x from t1 FOR UPDATE;
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select * from t2;
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select * from t1;
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connection con2;
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# The following query should hang because con1 is locking the page
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update t2 set a=2 where b = 0;
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select * from t2;
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--send
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update t1 set x=2 where id = 0;
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--sleep 2;
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connection con1;
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update t1 set x=1 where id = 0;
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select * from t1;
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commit;
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connection con2;
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reap;
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commit;
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connection con1;
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select * from t1;
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commit;
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drop table t1, t2;
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