A.SELECT职员号FROM订单GROUPBY职员号HAVINGCOUNT(*)>3ANDAVG_金额>200
B.SELECT职员号FROM订单GROUPBY职员号HAVINGCOUNT(*)>3ANDAVG(金额)>200
C.SELECT职员号FROM订单GROUPBY职员号HAVINGCOUNT(*)>3WHEREAVG(金额)>200
D.SELECT职员号FROM订单GROUPBY职员号WHERECOUNT(*)>3ANDAVG_金额>200