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------------------------------------------------------------------------ r3601 | marko | 2008-12-22 16:05:19 +0200 (Mon, 22 Dec 2008) | 9 lines branches/5.1: Make SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED a true replacement of SET GLOBAL INNODB_LOCKS_UNSAFE_FOR_BINLOG=1. This fixes an error that was introduced in r370, causing semi-consistent read not to not unlock rows in READ COMMITTED mode. (Bug #41671, Issue #146) rb://67 approved by Heikki Tuuri ------------------------------------------------------------------------
40 lines
1 KiB
Text
40 lines
1 KiB
Text
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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