include/master-slave.inc
[connection master]
CREATE TABLE t1 (id INT PRIMARY KEY AUTO_INCREMENT, a INT, b INT, c INT,
UNIQUE (a), UNIQUE (b)) ENGINE=innodb;
INSERT INTO t1 (`a`,`c`) VALUES (1,1), (2,1) ON DUPLICATE KEY UPDATE c = 1;
# UNSAFE
INSERT INTO t1 (`a`,`c`) VALUES (3, 1),(2,1), (1,1) ON DUPLICATE KEY UPDATE c = a * 10 + VALUES(c);
SELECT * from t1;
id	a	b	c
1	1	NULL	11
2	2	NULL	21
3	3	NULL	1
connection slave;
include/diff_tables.inc [master:t1,slave:t1]
connection master;
CREATE OR REPLACE TABLE t1 (a INT, b INT, c INT, UNIQUE (a), UNIQUE (b)) ENGINE=innodb;
INSERT INTO t1 VALUES (1,10,1);
# eligable for the statement format run unsafe warning
INSERT INTO t1 VALUES (2,20,2) ON DUPLICATE KEY UPDATE c = 100;
# not eligable: no warning in the statement format run
INSERT INTO t1 (`a`,`c`) VALUES (3, 1) ON DUPLICATE KEY UPDATE c = 99;
SELECT * from t1;
a	b	c
1	10	1
2	20	2
3	NULL	1
connection slave;
include/diff_tables.inc [master:t1,slave:t1]
connection master;
DROP TABLE t1;
connection slave;
include/rpl_end.inc