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Fixed bug #27650:

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INSERT into InnoDB table may cause "ERROR 1062 (23000): Duplicate entry..."
errors or lost records after multi-row INSERT of the form:
"INSERT INTO t (id...) VALUES (NULL...) ON DUPLICATE KEY UPDATE id=VALUES(id)",
where "id" is an AUTO_INCREMENT column.

It happens because InnoDB handler forgets to save next insert id after
updating of auto_increment column with new values. As result of that
last insert id stored inside InnoDB dictionary tables differs from it's
cached thd->next_insert_id value.
This commit is contained in:
gshchepa/uchum@gshchepa.loc
2007-04-26 02:01:23 +05:00
parent b77a85ef22
commit 5983038a66
3 changed files with 88 additions and 0 deletions
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39
mysql-test/r/innodb_mysql.result
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@ -446,4 +446,43 @@ a
2
5
drop table t1;
create table t1(
id int auto_increment,
c char(1) not null,
counter int not null default 1,
primary key (id),
unique key (c)
) engine=innodb;
insert into t1 (id, c) values
(NULL, 'a'),
(NULL, 'a')
on duplicate key update id = values(id), counter = counter + 1;
select * from t1;
id c counter
2 a 2
insert into t1 (id, c) values
(NULL, 'b')
on duplicate key update id = values(id), counter = counter + 1;
select * from t1;
id c counter
2 a 2
3 b 1
truncate table t1;
insert into t1 (id, c) values (NULL, 'a');
select * from t1;
id c counter
1 a 1
insert into t1 (id, c) values (NULL, 'b'), (NULL, 'b')
on duplicate key update id = values(id), c = values(c), counter = counter + 1;
select * from t1;
id c counter
1 a 1
3 b 2
insert into t1 (id, c) values (NULL, 'a')
on duplicate key update id = values(id), c = values(c), counter = counter + 1;
select * from t1;
id c counter
3 b 2
4 a 2
drop table t1;
End of 5.0 tests