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Fix for BUG#24432

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"INSERT... ON DUPLICATE KEY UPDATE skips auto_increment values".
When in an INSERT ON DUPLICATE KEY UPDATE, using
an autoincrement column, we inserted some autogenerated values and
also updated some rows, some autogenerated values were not used
(for example, even if 10 was the largest autoinc value in the table
at the start of the statement, 12 could be the first autogenerated
value inserted by the statement, instead of 11). One autogenerated
value was lost per updated row. Led to exhausting the range of the
autoincrement column faster.
Bug introduced by fix of BUG#20188; present since 5.0.24 and 5.1.12.
This bug breaks replication from a pre-5.0.24 master.
But the present bugfix, as it makes INSERT ON DUP KEY UPDATE
behave like pre-5.0.24, breaks replication from a [5.0.24,5.0.34]
master to a fixed (5.0.36) slave! To warn users against this when
they upgrade their slave, as agreed with the support team, we add
code for a fixed slave to detect that it is connected to a buggy
master in a situation (INSERT ON DUP KEY UPDATE into autoinc column)
likely to break replication, in which case it cannot replicate so
stops and prints a message to the slave's error log and to SHOW SLAVE
STATUS.
For 5.0.36->[5.0.24,5.0.34] replication we cannot warn as master
does not know the slave's version (but we always recommended to users
to have slave at least as new as master).
As agreed with support, I'll also ask for an alert to be put into
the MySQL Network Monitoring and Advisory Service.
This commit is contained in:
guilhem@gbichot3.local
2007-02-08 15:53:14 +01:00
parent ab8200aed8
commit b3a03dada9
10 changed files with 458 additions and 1 deletions
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58
mysql-test/r/rpl_insert_id.result
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@ -234,6 +234,64 @@ n b
2 100
3 350
drop table t1;
CREATE TABLE t1 (a INT NOT NULL PRIMARY KEY AUTO_INCREMENT, b INT,
UNIQUE(b));
INSERT INTO t1(b) VALUES(1),(1),(2) ON DUPLICATE KEY UPDATE t1.b=10;
SELECT * FROM t1;
a b
1 10
2 2
SELECT * FROM t1;
a b
1 10
2 2
drop table t1;
CREATE TABLE t1 (
id bigint(20) unsigned NOT NULL auto_increment,
field_1 int(10) unsigned NOT NULL,
field_2 varchar(255) NOT NULL,
field_3 varchar(255) NOT NULL,
PRIMARY KEY (id),
UNIQUE KEY field_1 (field_1, field_2)
);
CREATE TABLE t2 (
field_a int(10) unsigned NOT NULL,
field_b varchar(255) NOT NULL,
field_c varchar(255) NOT NULL
);
INSERT INTO t2 (field_a, field_b, field_c) VALUES (1, 'a', '1a');
INSERT INTO t2 (field_a, field_b, field_c) VALUES (2, 'b', '2b');
INSERT INTO t2 (field_a, field_b, field_c) VALUES (3, 'c', '3c');
INSERT INTO t2 (field_a, field_b, field_c) VALUES (4, 'd', '4d');
INSERT INTO t2 (field_a, field_b, field_c) VALUES (5, 'e', '5e');
INSERT INTO t1 (field_1, field_2, field_3)
SELECT t2.field_a, t2.field_b, t2.field_c
FROM t2
ON DUPLICATE KEY UPDATE
t1.field_3 = t2.field_c;
INSERT INTO t2 (field_a, field_b, field_c) VALUES (6, 'f', '6f');
INSERT INTO t1 (field_1, field_2, field_3)
SELECT t2.field_a, t2.field_b, t2.field_c
FROM t2
ON DUPLICATE KEY UPDATE
t1.field_3 = t2.field_c;
SELECT * FROM t1;
id field_1 field_2 field_3
1 1 a 1a
2 2 b 2b
3 3 c 3c
4 4 d 4d
5 5 e 5e
6 6 f 6f
SELECT * FROM t1;
id field_1 field_2 field_3
1 1 a 1a
2 2 b 2b
3 3 c 3c
4 4 d 4d
5 5 e 5e
6 6 f 6f
drop table t1, t2;
DROP PROCEDURE IF EXISTS p1;
DROP TABLE IF EXISTS t1, t2;
SELECT LAST_INSERT_ID(0);