查詢計算時間在辦公室

Question

花了我有表列：名字，日期和進入退出的辦公室，日期和時間的時間

我寫的查詢，返回數量小時是僱主花了每週的辦公室，例如

我不知道該怎麼做，請幫助。

Answer 1

測試數據

Declare @T TABLE (EmpID INT , Enter DATETIME , [Exit] DATETIME) 

INSERT INTO @T VALUES 
(1 , '2017-01-22 09:26:00.000' , '2017-01-22 15:25:00.000') 
,(1 , '2017-01-21 10:15:00.000' , '2017-01-21 12:00:00.000') 
,(1 , '2017-01-20 09:05:00.000' , '2017-01-20 13:05:00.000') 
,(1 , '2017-01-21 10:15:00.000' , '2017-01-21 12:00:00.000') 
,(2 , '2017-01-22 09:26:00.000' , '2017-01-22 15:26:00.000') 
,(2 , '2017-01-21 10:15:00.000' , '2017-01-21 12:30:00.000') 
,(2 , '2017-01-20 09:05:00.000' , '2017-01-20 13:05:00.000') 

查詢

Select EmpID 
    , CONVERT(VARCHAR(10) ,DATEADD(DAY, - (DATEPART(WEEKDAY, Enter)-1), Enter) , 104) [WeekStart] 
    , CONVERT(VARCHAR(10) ,DATEADD(DAY, 7- (DATEPART(WEEKDAY, Enter)), Enter) , 104) [WeekEnd] 
    , CAST(SUM(DATEDIFF(minute,Enter, [Exit]))/60.00 AS DECIMAL(10,2)) [Hours Worked] 

FROM @T 
GROUP BY EmpID 
    , CONVERT(VARCHAR(10) ,DATEADD(DAY, - (DATEPART(WEEKDAY, Enter)-1), Enter) , 104) 
    , CONVERT(VARCHAR(10) ,DATEADD(DAY, 7- (DATEPART(WEEKDAY, Enter)), Enter) , 104) 

結果集

╔═══════╦════════════╦════════════╦══════════════╗ 
║ EmpID ║ WeekStart ║ WeekEnd ║ Hours Worked ║ 
╠═══════╬════════════╬════════════╬══════════════╣ 
║  1 ║ 15.01.2017 ║ 21.01.2017 ║   7.50 ║ 
║  1 ║ 22.01.2017 ║ 28.01.2017 ║   5.98 ║ 
║  2 ║ 15.01.2017 ║ 21.01.2017 ║   6.25 ║ 
║  2 ║ 22.01.2017 ║ 28.01.2017 ║   6.00 ║ 
╚═══════╩════════════╩════════════╩══════════════╝