include/master-slave.inc [connection master] CREATE TABLE t1 ( a int unsigned not null auto_increment primary key, b int unsigned ) ENGINE=MyISAM; CREATE TABLE t2 ( a int unsigned not null auto_increment primary key, b int unsigned ) ENGINE=MyISAM; INSERT INTO t1 VALUES (NULL, 0); INSERT INTO t1 SELECT NULL, 0 FROM t1; INSERT INTO t2 VALUES (NULL, 0), (NULL,1); SELECT * FROM t1 ORDER BY a; a b 1 0 2 0 SELECT * FROM t2 ORDER BY a; a b 1 0 2 1 UPDATE t1, t2 SET t1.b = t2.b WHERE t1.a = t2.a; drop table t1, t2; include/rpl_end.inc