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e436b8866b
In RBR, There is an inconsistency between slaves and master. When INSERT statement which includes an auto_increment field is executed, Store engine of master will check the value of the auto_increment field. It will generate a sequence number and then replace the value, if its value is NULL or empty. if the field's value is 0, the store engine will do like encountering the NULL values unless NO_AUTO_VALUE_ON_ZERO is set into SQL_MODE. In contrast, if the field's value is 0, Store engine of slave always generates a new sequence number whether or not NO_AUTO_VALUE_ON_ZERO is set into SQL_MODE. SQL MODE of slave sql thread is always consistency with master's. Another variable is related to this bug. If generateing a sequence number is decided by the values of table->auto_increment_field_not_null and SQL_MODE(if includes MODE_NO_AUTO_VALUE_ON_ZERO) The table->auto_increment_is_not_null is FALSE, which causes this bug to appear. ..
314 lines
5.6 KiB
Text
314 lines
5.6 KiB
Text
stop slave;
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drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
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reset master;
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reset slave;
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drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
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start slave;
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create table t1 (a int not null auto_increment,b int, primary key (a)) engine=myisam auto_increment=3;
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insert into t1 values (NULL,1),(NULL,2),(NULL,3);
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select * from t1;
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a b
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12 1
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22 2
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32 3
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select * from t1;
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a b
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12 1
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22 2
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32 3
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drop table t1;
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create table t1 (a int not null auto_increment,b int, primary key (a)) engine=myisam;
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insert into t1 values (1,1),(NULL,2),(3,3),(NULL,4);
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delete from t1 where b=4;
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insert into t1 values (NULL,5),(NULL,6);
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select * from t1;
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a b
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1 1
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2 2
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3 3
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22 5
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32 6
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select * from t1;
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a b
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1 1
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2 2
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3 3
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22 5
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32 6
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drop table t1;
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set @@session.auto_increment_increment=100, @@session.auto_increment_offset=10;
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show variables like "%auto_inc%";
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Variable_name Value
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auto_increment_increment 100
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auto_increment_offset 10
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create table t1 (a int not null auto_increment, primary key (a)) engine=myisam;
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insert into t1 values (NULL),(5),(NULL);
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insert into t1 values (250),(NULL);
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select * from t1;
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a
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5
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10
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110
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250
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310
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insert into t1 values (1000);
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set @@insert_id=400;
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insert into t1 values(NULL),(NULL);
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select * from t1;
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a
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5
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10
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110
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250
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310
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400
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410
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1000
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select * from t1;
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a
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5
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10
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110
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250
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310
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400
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410
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1000
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drop table t1;
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create table t1 (a int not null auto_increment, primary key (a)) engine=innodb;
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insert into t1 values (NULL),(5),(NULL);
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insert into t1 values (250),(NULL);
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select * from t1;
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a
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5
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10
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110
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250
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310
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insert into t1 values (1000);
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set @@insert_id=400;
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insert into t1 values(NULL),(NULL);
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select * from t1;
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a
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5
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10
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110
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250
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310
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400
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410
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1000
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select * from t1;
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a
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5
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10
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110
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250
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310
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400
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410
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1000
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drop table t1;
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set @@session.auto_increment_increment=1, @@session.auto_increment_offset=1;
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create table t1 (a int not null auto_increment, primary key (a)) engine=myisam;
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insert into t1 values (NULL),(5),(NULL),(NULL);
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insert into t1 values (500),(NULL),(502),(NULL),(NULL);
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select * from t1;
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a
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1
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5
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6
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7
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500
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501
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502
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503
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504
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set @@insert_id=600;
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insert into t1 values(600),(NULL),(NULL);
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ERROR 23000: Duplicate entry '600' for key 'PRIMARY'
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set @@insert_id=600;
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insert ignore into t1 values(600),(NULL),(NULL),(610),(NULL);
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select * from t1;
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a
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1
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5
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6
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7
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500
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501
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502
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503
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504
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600
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610
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611
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select * from t1;
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a
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1
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5
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6
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7
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500
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501
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502
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503
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504
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600
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610
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611
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drop table t1;
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set @@session.auto_increment_increment=10, @@session.auto_increment_offset=1;
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create table t1 (a int not null auto_increment, primary key (a)) engine=myisam;
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insert into t1 values(2),(12),(22),(32),(42);
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insert into t1 values (NULL),(NULL);
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insert into t1 values (3),(NULL),(NULL);
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select * from t1;
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a
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1
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3
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11
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21
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31
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select * from t1;
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a
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1
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2
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3
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11
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12
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21
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22
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31
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32
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42
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drop table t1;
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create table t1 (a tinyint not null auto_increment primary key) engine=myisam;
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insert into t1 values(103);
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set auto_increment_increment=11;
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set auto_increment_offset=4;
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insert into t1 values(null);
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insert into t1 values(null);
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insert into t1 values(null);
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ERROR 23000: Duplicate entry '125' for key 'PRIMARY'
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select a, mod(a-@@auto_increment_offset,@@auto_increment_increment) from t1 order by a;
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a mod(a-@@auto_increment_offset,@@auto_increment_increment)
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103 0
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114 0
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125 0
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create table t2 (a tinyint unsigned not null auto_increment primary key) engine=myisam;
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set auto_increment_increment=10;
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set auto_increment_offset=1;
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set insert_id=1000;
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insert into t2 values(null);
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Warnings:
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Warning 1264 Out of range value for column 'a' at row 1
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select a, mod(a-@@auto_increment_offset,@@auto_increment_increment) from t2 order by a;
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a mod(a-@@auto_increment_offset,@@auto_increment_increment)
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251 0
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create table t3 like t1;
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set auto_increment_increment=1000;
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set auto_increment_offset=700;
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insert into t3 values(null);
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Warnings:
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Warning 1264 Out of range value for column 'a' at row 1
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select * from t3 order by a;
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a
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127
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select * from t1 order by a;
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a
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103
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114
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125
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select * from t2 order by a;
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a
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251
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select * from t3 order by a;
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a
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127
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drop table t1,t2,t3;
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set auto_increment_increment=1;
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set auto_increment_offset=1;
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CREATE TABLE t1 (id MEDIUMINT NOT NULL AUTO_INCREMENT PRIMARY KEY) ENGINE=innodb;
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INSERT INTO t1 VALUES (NULL), (NULL), (NULL);
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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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`id` mediumint(9) NOT NULL AUTO_INCREMENT,
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PRIMARY KEY (`id`)
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) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=latin1
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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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`id` mediumint(9) NOT NULL AUTO_INCREMENT,
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PRIMARY KEY (`id`)
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) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=latin1
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drop table t1;
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stop slave;
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drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
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reset master;
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reset slave;
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drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
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start slave;
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DROP TABLE IF EXISTS t1;
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DROP TABLE IF EXISTS t2;
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CREATE TABLE t1 (id INT NOT NULL AUTO_INCREMENT PRIMARY KEY) ENGINE=innodb;
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CREATE TABLE t2 (id INT NOT NULL AUTO_INCREMENT PRIMARY KEY) ENGINE=myisam;
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SET SQL_MODE='';
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INSERT INTO t1 VALUES(NULL);
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INSERT INTO t2 VALUES(NULL);
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SELECT * FROM t1;
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id
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1
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SELECT * FROM t2;
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id
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1
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INSERT INTO t1 VALUES();
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INSERT INTO t2 VALUES();
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SELECT * FROM t1;
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id
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1
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2
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SELECT * FROM t2;
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id
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1
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2
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INSERT INTO t1 VALUES(0);
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INSERT INTO t2 VALUES(0);
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SELECT * FROM t1;
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id
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1
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2
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3
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SELECT * FROM t2;
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id
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1
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2
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3
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SET SQL_MODE=NO_AUTO_VALUE_ON_ZERO;
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INSERT INTO t1 VALUES(0);
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INSERT INTO t2 VALUES(0);
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SELECT * FROM t1;
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id
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0
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1
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2
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3
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SELECT * FROM t2;
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id
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0
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1
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2
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3
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INSERT INTO t1 VALUES(4);
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INSERT INTO t2 VALUES(4);
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FLUSH LOGS;
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Comparing tables master:test.t1 and slave:test.t1
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Comparing tables master:test.t2 and slave:test.t2
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DROP TABLE t1;
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DROP TABLE t2;
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Comparing tables master:test.t1 and slave:test.t1
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Comparing tables master:test.t2 and slave:test.t2
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DROP TABLE t1;
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DROP TABLE t2;
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SET SQL_MODE='';
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