查询有10名以上(含10名)职工的部门信息(部门名和职工人数),并按职工人数降序排序。正确的命令是 ______。
A.
SELECT 部门名,COUNT (职工号)AS 职工人数; FROM 部门,职工 WHERE 部门. 部门号=职工.部门号; GROUP BY 部门名 HAVING COUNT(*)>=10; ORDER BY COUNT (职工号) ASC
B.
SELECT 部门名,COUNT (职工号) AS 职工人数; FROM 部门,职工 WHERE 部门.部门号=职工.部门号; GROUP BY 部门名 HAVING COUNT(*)>=10; ORDER BY COUNT (职工号) DESC
C.
SELECT 部门名,COUNT (职工号) AS 职工人数; FROM 部门,职工 WHERE 部门.部门号=职工.部门号; GROUP BY 部门名 HAVING COUNT(*)>=10; ORDER BY 职工人数 ASC
D.
SELECT 部门名,COUNT(职工号) AS 职工人数; FROM 部门,职工 WHERE 部门. 部门号= 职工.部门号; GROUP BY 部门名 HAVING COUNT (*)>=10; ORDER BY 职工号人数 DESC