stop slave; drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9; reset master; reset slave; drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9; start slave; CREATE TABLE t1 (id INT primary key auto_increment, name VARCHAR(64)); truncate table t1; insert delayed into t1 values(10, "my name"); insert delayed into t1 values(10, "is Bond"), (20, "James Bond"); ERROR 23000: Duplicate entry '10' for key 1 flush table t1; select * from t1; id name 10 my name select * from t1; id name 10 my name delete from t1 where id!=10; insert delayed into t1 values(20, "is Bond"), (10, "James Bond"); ERROR 23000: Duplicate entry '10' for key 1 flush table t1; select * from t1; id name 10 my name 20 is Bond select * from t1; id name 10 my name 20 is Bond drop table t1; CREATE TABLE t1(a int, UNIQUE(a)); INSERT DELAYED IGNORE INTO t1 VALUES(1); INSERT DELAYED IGNORE INTO t1 VALUES(1); flush table t1; show binlog events limit 11,100; Log_name Pos Event_type Server_id End_log_pos Info x x x x x use `test`; INSERT DELAYED IGNORE INTO t1 VALUES(1) x x x x x use `test`; INSERT DELAYED IGNORE INTO t1 VALUES(1) x x x x x use `test`; flush table t1 select * from t1; a 1 On slave show binlog events limit 12,100; Log_name Pos Event_type Server_id End_log_pos Info x x x x x use `test`; INSERT DELAYED IGNORE INTO t1 VALUES(1) x x x x x use `test`; INSERT DELAYED IGNORE INTO t1 VALUES(1) x x x x x use `test`; flush table t1 select * from t1; a 1 drop table t1; End of 5.0 tests