Question

我正在尝试将数据中的datetimerange列拆分为一周的开始 - 结尾。我得到它使用此查询，但问题是我的数据中的日期不是一周的开始，我想从我的数据而不是startData

的日期

但是当我添加了ActualStartDate选项时，这给了我同一周的多天行数，这不是我想要的。

我的数据中包含这些日期。

我的查询：

SELECT DISTINCT
DATEPART(ww, Convert(varchar, [initiateDateTime] ,101)) AS Week,
CONVERT(varchar, [initiateDateTime],101) as ActualStartDate,
--CONVERT(varchar, DATEADD(dd, -(DATEPART(dw, Convert(varchar, [initiateDateTime],101))-1), Convert(varchar, [initiateDateTime],101)),101) AS StartDateWeek,
CONVERT(varchar, DATEADD(dd, 6-(DATEPART(dw, Convert(varchar, [initiateDateTime],101))-1), Convert(varchar, [initiateDateTime],101)),101)  AS EndDateWeek
FROM [LogData].[dbo].[InitLogs]
WHERE [initiateDateTime] BETWEEN '11/12/2014' AND '01/08/2015'  
GROUP BY DATEPART(ww, Convert(varchar, [initiateDateTime] ,101)),CONVERT(varchar, [initiateDateTime],101)
ORDER BY DATEPART(ww, Convert(varchar, [initiateDateTime] ,101))

输出：

46  11/12/2014  11/15/2014
46  11/13/2014  11/15/2014
46  11/14/2014  11/15/2014
46  11/15/2014  11/15/2014
47  11/18/2014  11/22/2014
47  11/21/2014  11/22/2014
47  11/22/2014  11/22/2014

但是，AS 11/13和11/14与46在同一周，我希望查询只返回一行

46  11/12/2014  11/15/2014
47  11/18/2014  11/22/2014

感谢您的光临。

更新：解决它与嵌套的SQL这样的实际日期

(SELECT 
    Top 1 (Convert(varchar, [initiateDateTime] ,101)) 
    FROM [LogData].[dbo].[InitLogs] 
    WHERE 
    [initiateDateTime] BETWEEN '11/1/2014' AND '01/08/2015'
    AND 
    DATEPART(wk, Convert(varchar, [initiateDateTime] ,101)) = DATEPART(wk, Convert(varchar, FL.initiateDateTime,101))
    ) As StartDate,

将datetimerange拆分为开始/结束周

0 个答案: