在SQL Server中獲取每週給定的一週數，月份數和年份的日期範圍

Question

我正在創建存儲過程以基於週數，月份數和年份數在日期範圍內顯示某些記錄。

例如：

Month = 4 [APRIL] 
Week = 2 [Week 2 for APRIL] 
Year = 2017 

輸出應該是：開始一天應該是星期天]

STARTDATE | END DATE 
4-2-2017 | 4-8-2017 

到處搜尋，有這個一個已經很難。

編輯： 我提供了一個示例查詢，以供參考

@Month int, 
@Year int, 
@WeekNumber int 

SELECT 
(start date of the week based on week num, month, year) as DATE1, 
(end date of the week based on week num, month, year) as DATE2 
WHERE 
StartDate = (start date of the week based on week num, month, year) 
EndDate = (end date of the week based on week num, month, year) 

Answer 1

這或許可以提供幫助。

示例更新了2008年

Declare @Month int = 4 
Declare @Year int = 2017 
Declare @Week int = 2 


Select DateR1 = min(RetVal) 
     ,DateR2 = max(RetVal) 
From (
     Select *,WkNr = Dense_Rank() over (Order by DatePart(WEEK,RetVal)) 
     From (Select Top (40) RetVal=DateAdd(DD,-1+Row_Number() Over (Order By Number),cast(str((@Year*10000)+(@Month*100)+1,8) as date)) From master..spt_values) D 
    ) A 
Where WkNr=@Week 

返回

DateR1  DateR2 
2017-04-02 2017-04-08