你如何计算两个日期之间的周数？

Question

你如何计算两个日期之间的周数？

例如如下

Declare @StartDate as DateTime = "01 Jan 2009";
Declare @EndDate as DateTime = "01 June 2009";

@StartDate and @EndDate

Answer 1

使用Datediff功能. datediff(ww,@startdate,@enddate)

ww告诉函数你需要哪些单位才能计入差值.

http://msdn.microsoft.com/en-us/library/ms189794.aspx