mysql關聯刪除

一、從數據表t1中把那些id值在數據表t2裏有匹配的記錄全刪除掉1  html DELETE t1 FROM t1,t2 WHERE t1.id=t2.id DELETE FROM t1 USING t1,t2 WHERE t1.id=t2.id   二、從數據表t1裏在數據表t2裏沒有匹配的記錄查找出來並刪除掉1  post DELETE t1 FROM t1 LEFT JOIN T2 ON

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