发布日期:2020-12-11
A.SELECT XH,GD FROM SC WHERE CH=’3’ORDER BY GDDESC
B.SELECT XH,GD FROM SC WHERE CH=’4’ORDER BY GDASC
C.SELECT XH,GD FROM SC WHERE CH=’5’GROUP BY GDDESC
D.SELECT XH,GD FROM SC WHERE CH=’6’GROUP BY GDASC
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