Question

所以我有一个看起来像这样的命令：

SELECT
UserID,
FacilityMMXID,
ScheduleDate,
StartTime,
EndTime
FROM TblPASchedule 
WHERE UserID = 244 AND MONTH(ScheduleDate) = 03 AND Year(ScheduleDate) = 2017

输出看起来像这样

UserID      FacilityMMXID ScheduleDate StartTime        EndTime
----------- ------------- ------------ ---------------- ----------------
244         1             2017-03-17   01:00:00         05:00:00
244         2             2017-03-17   01:00:00         05:00:00
244         3             2017-03-17   01:00:00         05:00:00
244         4             2017-03-17   01:00:00         05:00:00
244         5             2017-03-17   01:00:00         05:00:00
244         6             2017-03-17   01:00:00         05:00:00
244         7             2017-03-17   01:00:00         05:00:00
244         8             2017-03-17   01:00:00         05:00:00
244         9             2017-03-17   01:00:00         05:00:00
244         10            2017-03-17   01:00:00         05:00:00
244         11            2017-03-17   01:00:00         05:00:00
244         12            2017-03-17   01:00:00         05:00:00
244         13            2017-03-17   01:00:00         05:00:00
244         14            2017-03-17   01:00:00         05:00:00
244         15            2017-03-17   01:00:00         05:00:00
244         1             2017-03-17   05:00:00         22:00:00
244         2             2017-03-17   05:00:00         22:00:00
244         3             2017-03-17   05:00:00         22:00:00
244         4             2017-03-17   05:00:00         22:00:00
244         5             2017-03-17   05:00:00         22:00:00
244         6             2017-03-17   05:00:00         22:00:00
244         7             2017-03-17   05:00:00         22:00:00
244         8             2017-03-17   05:00:00         22:00:00
244         9             2017-03-17   05:00:00         22:00:00
244         10            2017-03-17   05:00:00         22:00:00
244         11            2017-03-17   05:00:00         22:00:00
244         12            2017-03-17   05:00:00         22:00:00
244         13            2017-03-17   05:00:00         22:00:00
244         14            2017-03-17   05:00:00         22:00:00
244         15            2017-03-17   05:00:00         22:00:00

我遗漏了ID行，因为在这种情况下它确实不重要。同样 - 是的 - 我意识到这个表非常多余 - 我不能解决这个问题，因为我不被允许 - 我只能努力让前面提到的求和功能正常工作。

最终目标是配对不同的StartTime和EndTime对，然后找出那些的日期差异 - 然后，在整个月 - 找到所有条目的总和。

据我所知：

使用：

SELECT
UserID,
DATEDIFF(HOUR, StartTime, EndTime) AS 'Hours Worked'
FROM TblPASchedule WHERE UserID = 244 AND MONTH(ScheduleDate) = 03 AND Year(ScheduleDate) = 2017
GROUP BY UserId, StartTime, EndTime

我得到输出：

UserID      Hours Worked
----------- ------------
244         4
244         17

但我不太确定我应该从哪里开始。

我最终需要根据UserID对这些总和进行分组，但我认为这是一步一步。我正在使用where子句来处理单个id ...

Answer 1

此查询获取UserID，Starttime和Endtime

的所有不同集合

;WITH CTE AS
 (SELECT DISTINCT UserID, StartTime, EndTime  FROM [dbo].[TblPASchedule])

SELECT SUM(DATEDIFF(MINUTE, StartTime, EndTime))/60.0 AS 'Hours Worked', UserID
FROM CTE GROUP BY UserID

结果看起来像这样

Hours Worked    UserID
1.666666        19
1.233333        37
0.500000        38

Answer 2

您是否尝试在群组之上包装其他子查询？

SELECT UserId, SUM('Hours Worked') as 'Hours Worked' FROM (
  SELECT
   UserID,
   DATEDIFF(HOUR, StartTime, EndTime) AS 'Hours Worked'
   FROM TblPASchedule WHERE UserID = 244 AND MONTH(ScheduleDate) = 03 AND Year(ScheduleDate) = 2017
   GROUP BY UserId, StartTime, EndTime
) AS temp
GROUP BY UserId

在按UserID分组的不同对上查找DATEDIFF的和？

2 个答案: