周从星期一开始给定的日期

Question

在下图中，我试图从每个星期一开始“ 制造日期”这一周，但无法获得所需的结果。

使用的查询：

select distinct     dateadd(week, DATEDIFF(week, 0, [ManufactureDate]),0 )sp, [ManufactureDate] 
FROM ab

当前结果集：

SP                           Manufacturing Date
2019-10-14 00:00:00.000  2019-10-13 00:00:00.000
2019-10-14 00:00:00.000  2019-10-14 00:00:00.000
2019-10-14 00:00:00.000  2019-10-15 00:00:00.000
2019-10-14 00:00:00.000  2019-10-16 00:00:00.000
2019-10-14 00:00:00.000  2019-10-17 00:00:00.000
2019-10-14 00:00:00.000  2019-10-18 00:00:00.000
2019-10-21 00:00:00.000  2019-10-20 00:00:00.000

所需结果：

Sp        Manufacturing Date
10/14/2019  10/14/2019
10/14/2019  10/15/2019
10/14/2019  10/16/2019
10/14/2019  10/17/2019
10/14/2019  10/18/2019
10/14/2019  10/20/2019
10/21/2019  10/21/2019

图片：

Answer 1

SELECT 
DATEADD(DAY, ((DATEPART(WEEKDAY,[ManufactureDate]) + 5) % 7) * -1, [ManufactureDate]) Sp, [ManufactureDate]
FROM ab

这里是fiddle。

Sp                  ManufactureDate
2019-10-07          2019-10-13
2019-10-14          2019-10-14
2019-10-14          2019-10-15
2019-10-14          2019-10-16
2019-10-14          2019-10-17
2019-10-14          2019-10-18
2019-10-14          2019-10-19
2019-10-14          2019-10-20
2019-10-21          2019-10-21