48 lines
1.3 KiB
Plaintext
48 lines
1.3 KiB
Plaintext
drop table if exists t1;
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set binlog_format=mixed;
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set session transaction isolation level repeatable read;
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create table t1(a int not null) engine=innodb DEFAULT CHARSET=latin1;
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insert into t1 values (1),(2),(3),(4),(5),(6),(7);
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set autocommit=0;
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select * from t1 where a=3 lock in share mode;
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a
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3
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set binlog_format=mixed;
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set session transaction isolation level repeatable read;
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set autocommit=0;
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update t1 set a=10 where a=5;
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ERROR HY000: Lock wait timeout exceeded; try restarting transaction
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commit;
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set session transaction isolation level read committed;
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update t1 set a=10 where a=5;
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select * from t1 where a=2 for update;
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ERROR HY000: Lock wait timeout exceeded; try restarting transaction
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select * from t1 where a=2 limit 1 for update;
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a
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2
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update t1 set a=11 where a=6;
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update t1 set a=12 where a=2;
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ERROR HY000: Lock wait timeout exceeded; try restarting transaction
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update t1 set a=13 where a=1;
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ERROR HY000: Lock wait timeout exceeded; try restarting transaction
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commit;
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update t1 set a=14 where a=1;
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commit;
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select * from t1;
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a
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14
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2
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3
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4
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10
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11
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7
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drop table t1;
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create table t1 (a int, b int) engine=myisam;
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create table t2 (c int, d int, key (c)) engine=innodb;
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insert into t1 values (1,1);
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insert into t2 values (1,2);
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set session transaction isolation level read committed;
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delete from t1 using t1 join t2 on t1.a = t2.c where t2.d in (1);
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drop table t1, t2;
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