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8646be88a1
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. mysql-test/r/rpl_auto_increment.result: result update. Before the fix, the result was that master inserted 127 in t1 (which didn't honour auto_increment_* variables!), instead of failing with "duplicate key 125" like now. mysql-test/t/rpl_auto_increment.test: Test for BUG#20524 "auto_increment_* not observed when inserting a too large value". We also check the pathological case (table t2) where it's impossible to "round down". The fixer of BUG#20573 will be able to use table t2 for testing his fix. sql/handler.cc: If handler::update_auto_increment() generates a value larger than the field's max possible value, we used to simply insert this max possible value (after pushing a warning). Now we "round down" this max possible value to honour auto_increment_* variables (if at all possible), before trying the insertion.
143 lines
4.1 KiB
Plaintext
143 lines
4.1 KiB
Plaintext
#
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# Test of auto_increment with offset
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#
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source include/have_innodb.inc;
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source include/master-slave.inc;
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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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sync_slave_with_master;
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select * from t1;
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connection master;
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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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sync_slave_with_master;
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select * from t1;
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connection master;
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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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create table t1 (a int not null auto_increment, primary key (a)) engine=myisam;
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# Insert with 2 insert statements to get better testing of logging
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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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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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sync_slave_with_master;
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select * from t1;
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connection master;
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drop table t1;
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#
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# Same test with innodb (as the innodb code is a bit different)
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#
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create table t1 (a int not null auto_increment, primary key (a)) engine=innodb;
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# Insert with 2 insert statements to get better testing of logging
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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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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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sync_slave_with_master;
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select * from t1;
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connection master;
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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 with 2 insert statements to get better testing of logging
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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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set @@insert_id=600;
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--error 1062
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insert into t1 values(600),(NULL),(NULL);
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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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sync_slave_with_master;
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select * from t1;
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connection master;
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drop table t1;
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#
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# Test that auto-increment works when slave has rows in the table
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#
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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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sync_slave_with_master;
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insert into t1 values(2),(12),(22),(32),(42);
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connection master;
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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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sync_slave_with_master;
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select * from t1;
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# Test for BUG#20524 "auto_increment_* not observed when inserting
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# a too large value". When an autogenerated value was bigger than the
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# maximum possible value of the field, it was truncated to that max
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# possible value, without being "rounded down" to still honour
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# auto_increment_* variables.
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connection master;
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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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--error 1062
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insert into t1 values(null);
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select a, mod(a-@@auto_increment_offset,@@auto_increment_increment) from t1 order by a;
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# same but with a larger value
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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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select a, mod(a-@@auto_increment_offset,@@auto_increment_increment) from t2 order by a;
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# An offset so big that even first value does not fit
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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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select * from t3 order by a;
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sync_slave_with_master;
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select * from t1 order by a;
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select * from t2 order by a;
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select * from t3 order by a;
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connection master;
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drop table t1,t2,t3;
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# End cleanup
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sync_slave_with_master;
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