A.SELECT部门号,COUNT(*),SUM(基本工资)FROM职工; HAVING COUNT(*)>=5 B.SELECT部门号,COUNT(*),SUM(基本工资)FROM职工; GROUP BY基本工资HAVING COUNT(*)>=5 C.SELECT部门号,COUNT(*),SUM(基本工资)FROM职工; GROUP BY部门号HAVING COUNT(*)>=5 D.SELECT部门号,COUNT(*),SUM(基本工资)FROM职工; GROUP BY部门号WHERE COUNT(*)>=5