回複：這個Query好美意義哦～我姐要我說滴

來源: 於 2013-03-06 10:02:08 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

SELECT * FROM A

UNION

SELECT * FROM B WHERE NOT EXISTS (SELECT * FROM A WHERE A.PK = B.PK)