假设Sales表用于存储销售信息,sal_name列为销售人员姓名,sal_money列为销售额度,现在要查询每个销售人员的销售次数,销售总金额,则下面的( )语句可以实现这些功能。
A. SELECT sal_name,SUM(sal_money),COUNT(sal_name) FROM Sales GROUP BY sal_name
B. SELECT sal_name,SUM(sal_money),COUNT(sal_name) FROM Sales ORDER BY sal_name
C. SELECT sal_name,AVG(sal_money),COUNT(sal_name) FROM Sales
D. SELECT sal_name,SUM(sal_money) FROM Sales GROUP BY sal_name ORDER BY sal_name