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133 lines
3.4 KiB
Text
133 lines
3.4 KiB
Text
create table t1(a blob unique) engine= InnoDB;
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insert into t1 values('RUC');
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insert into t1 values ('RUC');
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ERROR 23000: Duplicate entry 'RUC' for key 'a'
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drop table t1;
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create table t1 (a blob unique , c int unique) engine=innodb;
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`a` blob DEFAULT NULL,
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`c` int(11) DEFAULT NULL,
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UNIQUE KEY `c` (`c`),
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UNIQUE KEY `a` (`a`) USING HASH
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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drop table t1;
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#test for concurrent insert of long unique in innodb
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create table t1(a blob unique) engine= InnoDB;
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`a` blob DEFAULT NULL,
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UNIQUE KEY `a` (`a`) USING HASH
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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connect 'con1', localhost, root,,;
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connect 'con2', localhost, root,,;
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connection con1;
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set innodb_lock_wait_timeout= 2;
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set transaction isolation level READ UNCOMMITTED;
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start transaction;
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insert into t1 values('RUC');
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connection con2;
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set innodb_lock_wait_timeout= 2;
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set transaction isolation level READ UNCOMMITTED;
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start transaction;
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insert into t1 values ('RUC');
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ERROR HY000: Lock wait timeout exceeded; try restarting transaction
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connection con1;
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commit;
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set transaction isolation level READ COMMITTED;
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start transaction;
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insert into t1 values('RC');
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connection con2;
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commit;
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set transaction isolation level READ COMMITTED;
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start transaction;
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insert into t1 values ('RC');
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ERROR HY000: Lock wait timeout exceeded; try restarting transaction
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commit;
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connection con1;
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commit;
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set transaction isolation level REPEATABLE READ;
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start transaction;
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insert into t1 values('RR');
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connection con2;
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commit;
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set transaction isolation level REPEATABLE READ;
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start transaction;
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insert into t1 values ('RR');
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ERROR HY000: Lock wait timeout exceeded; try restarting transaction
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connection con1;
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commit;
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set transaction isolation level SERIALIZABLE;
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start transaction;
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insert into t1 values('S');
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connection con2;
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commit;
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set transaction isolation level SERIALIZABLE;
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start transaction;
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insert into t1 values ('S');
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ERROR HY000: Lock wait timeout exceeded; try restarting transaction
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commit;
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connection con1;
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commit;
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select * from t1;
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a
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RUC
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RC
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RR
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S
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drop table t1;
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create table t1(a blob unique) engine=Innodb;
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connection con1;
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set transaction isolation level READ UNCOMMITTED;
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start transaction;
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insert into t1 values('RUC');
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connection con2;
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set transaction isolation level READ UNCOMMITTED;
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start transaction;
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insert into t1 values ('RUC');;
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connection con1;
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rollback;
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connection con2;
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commit;
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connection con1;
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set transaction isolation level READ COMMITTED;
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start transaction;
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insert into t1 values('RC');
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connection con2;
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set transaction isolation level READ COMMITTED;
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start transaction;
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insert into t1 values ('RC');;
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connection con1;
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rollback;
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connection con2;
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commit;
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connection con1;
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set transaction isolation level REPEATABLE READ;
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start transaction;
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insert into t1 values('RR');
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connection con2;
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set transaction isolation level REPEATABLE READ;
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start transaction;
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insert into t1 values ('RR');;
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connection con1;
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rollback;
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connection con2;
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commit;
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connection con1;
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set transaction isolation level SERIALIZABLE;
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start transaction;
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insert into t1 values('S');
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connection con2;
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set transaction isolation level SERIALIZABLE;
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start transaction;
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insert into t1 values ('S');;
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connection con1;
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rollback;
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connection con2;
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commit;
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connection default;
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drop table t1;
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disconnect con1;
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disconnect con2;
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