回複：這個Query好美意義哦～我姐要我說滴

來源: slow_quick 於 2013-03-06 10:02:08 [] [博客] [舊帖] [給我悄悄話] 閱讀數 : (113 bytes)

SELECT * FROM A

UNION

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

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