DROP TABLE IF EXISTS t1,t2; CREATE TABLE t1 (a , b ) ENGINE= CHECKSUM=1; INSERT INTO t1 (a,b) VALUES (1,'a'),(2,'b'); CREATE TABLE t2 (a , b ) ENGINE= CHECKSUM=1; CHECKSUM TABLE t1; Table Checksum test.t1 4272806499 CHECKSUM TABLE t2, t1; Table Checksum test.t2 0 test.t1 4272806499 CHECKSUM TABLE t1, t2 QUICK; Table Checksum test.t1 4272806499 test.t2 0 CHECKSUM TABLE t1, t2 EXTENDED; Table Checksum test.t1 4272806499 test.t2 0 DROP TABLE t1, t2;