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DROP TABLE source; CREATE TABLE source ( id int, name varchar(1) ); DROP TABLE target; CREATE TABLE target ( id int, name varchar(1) ); INSERT INTO source VALUES (1, 'A'); INSERT INTO source VALUES (2, 'B'); INSERT INTO source VALUES (3, 'C'); INSERT INTO source VALUES (4, 'D'); INSERT INTO target VALUES (1, 'A'); INSERT INTO target VALUES (2, 'B'); INSERT INTO target VALUES (4, 'X'); INSERT INTO target VALUES (5, 'F'); select * from source; select * from target; select s.id,'New in Source' as Comment from source s left join target t on s.id = t.id where t.id is NULL union select s.id,'New in Target' as Comment from source s right join target t on s.id = t.id where s.id is NULL union select s.id,'Mismatch' as Comment from source s join target t on s.id = t.id and s.name <> t.name