小时和分钟的总和，它是sql server中的日期时间数据类型

Question

如何计算时间？这是我遇到问题的SQL：

drop table #temp
Create TABLE #Temp (EmpID varchar(50),Inout varchar(50),Punchdate datetime2(0),rowid int, INTotal datetime ,Outtotal datetime)
declare @ttt int
--truncate table @Temp
--drop table @temp
;WITH timediff AS

(    select ID,  In_out,Punch_Date ,  ROW_NUMBER() OVER ( ORDER BY Punch_date) AS [row]
        -- Create an index number ordered by time.                
        from tblCAPdata tbl  
        where ID='00007971' and In_Out!='Null Mode' and CONVERT(date,Punch_Date)=CONVERT(date,'2015-12-30 00:00:00')

)

insert Into #Temp
select *,
 convert(varchar(8),dateadd(mi, ISNULL(DATEDIFF(MINUTE, 
                      (SELECT other.Punch_Date 
                              FROM timediff Other 
                              WHERE other.[row] = timediff.[row]-1 and In_Out='In' and In_Out!='Out'  ), 
                       timediff.Punch_Date),0),0),108)
                 AS INTimedifferance,
              -- convert(varchar(8),dateadd(mi,datediff(Minute, day_start, day_end),0),108)
     CONVERT(varchar(8),dateadd(mi, ISNULL(DATEDIFF(MINUTE, 
                      (SELECT other.Punch_Date 
                              FROM timediff Other 
                              WHERE other.[row] = timediff.[row]-1 and In_Out='Out' and In_Out!='In' ), 
                       timediff.Punch_Date),0),0),108) AS OUTTimedifferance


FROM timediff 
where NOT EXISTS (
    SELECT *
    FROM   timediff omit
    WHERE  omit.In_Out = timediff.In_Out
    AND    omit.[row]   = timediff.[row] - 1
    );
select sum(INTotal) as v,sum(OuttotAL) from #Temp 

错误消息是：

Msg 8117, Level 16, State 1, Line 39
Operand data type datetime is invalid for sum operator.

PFA。

我需要在日期时间类型

中获取时间和出时间的总和

Answer 1

您需要转换为秒（使用DATEDIFF）或其他时间单位，然后求和。然后，如果需要，您可以转换回日期时间。

Answer 2

此方法将In和Out时间链接到每个员工IN punch的单行，计算小时数，然后让最后一个表达式执行所需的计算。

WITH TimesWithIds AS (
    SELECT *,
        ROW_NUMBER() OVER (PARTITION BY ID, In_Out ORDER BY Punch_Date) AS RowNum
    FROM [Table] T1
), InAndOuts (
    SELECT
        InTimes.ID,
        InTimes.Punch_Date AS PunchIn,
        OutTimes.Punch_Date AS PuchOut,
        CONVERT(DECIMAL(12,4), DATEDIFF(SS, InTimes.Punch_Date, OutTimes.PunchDate))/3600 AS PunchHours -- Be sure this is large enough for you
    FROM TimesWithIds InTimes
        INNER JOIN TimesWithIds OutTimes
            ON InTimes.RowNum = OutTimes.RowNum
                AND InTimes.ID = OutTimes.ID
    WHERE InTimes.In_Out = 'In'
        AND OutTimes.In_Out = 'Out'
)
    SELECT
        ID,
        SUM(PunchHours) AS PunchHours
    FROM InAndOuts
    GROUP BY
        ID

上面的示例计算每位员工的小时总小时数。添加任何过滤器并使用所需的数据格式。请记住，您不能将总小时数存储为真实日期/时间 - 必须是某种数字类型，因为24小时后，TIME数据类型才会重置。