mirror of
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synced 2025-11-02 02:53:04 +03:00
140b488c96
a too large value": the bug was that if MySQL generated a value for an auto_increment column, based on auto_increment_* variables, and this value was bigger than the column's max possible value, then that max possible value was inserted (after issuing a warning). But this didn't honour auto_increment_* variables (and so could cause conflicts in a master-master replication where one master is supposed to generated only even numbers, and the other only odd numbers), so now we "round down" this max possible value to honour auto_increment_* variables, before inserting it.
230 lines
3.9 KiB
Plaintext
230 lines
3.9 KiB
Plaintext
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 1
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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 1
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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 adjusted 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 adjusted 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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