使用基于集合的方法获取给定日期范围之间的特定日期

为了得到所有Sunday dates和Saturday dates 之间给定date ranges我使用iterative solution如下,

create  TABLE #Dayweeks (id int IDENTITY(1,1),StartWeek DATETIME, EndWeek DATETIME)

DECLARE @wkstartdate datetime = '2015-12-06',
        @wkenddate   datetime = '2016-04-05'



WHILE (@wkstartdate <= @wkenddate)
    BEGIN
         INSERT INTO #Dayweeks
         (
         StartWeek, EndWeek
         )
         SELECT
         @wkstartdate, DATEADD(wk,DATEDIFF(wk,0,@wkstartdate),6)-1

         SELECT @wkstartdate = DATEADD(dd,7,@wkstartdate)
    END

我想知道如何使用它set based approach.有没有办法通过使用获得上述结果set based approach？

我使用迭代解得到的输出如下.