A.N B.C C.L D.U
A.報表 B.數(shù)據(jù)庫 C.數(shù)據(jù)表 D.查詢
A.DELETEFROMXSFOR學號=2015 B.DELETEFROMXSFORLEFT(學號,4)=2015 C.DELETEFROMXSWHERE2015$學號 D.DELETEFROMXSWHERELEFT(學號,4)=2015