如图，【本月累计销售额】是指各个营业员的自己的累计销售额，但是结果是所有营业员总的累计销售额，没有按 营业员 进行分组。

要怎么才能实现 营业员分组呢？

此主题相关图片如下：qq截图20160529152455.png

 

代码：

SELEC T
cast(datename(year,a.[业务日期])as int) AS [年份],
cast(datename(month,a.[业务日期])as int) AS [月份],
cast(datename(week,a.[业务日期])as int) AS [周次],
a.[营业员姓名],
sum(a.[销售额]) as 本周销售额 ,
(selec t sum(b.[销售额]) from dbo.worksheet as b where datename(week,b.[业务日期])<=datename(week,a.[业务日期]) and datename(year,b.[业务日期]) = datename(year,a.[业务日期]) and datename(month,b.[业务日期]) = datename(month,a.[业务日期])) AS [本月累计销售额]