sum of time values - SQL Server Forums

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sum of time values

Author

Topic

anupalavila
Yak Posting Veteran

56 Posts

Posted - 2008-09-30 : 02:58:12

Hi

If in my table I have values like this

EmpId Duration
1 1900-01-01 07:49:03.000
2 1900-01-01 02:28:06.000
1 1900-01-01 03:09:01.000
1 1900-01-01 06:19:02.000

how can I calculate the total duration of EmpId 1 ie

07:49:03.000 + 03:09:01.000 + 06:19:02.000

please help me with the query

Thanks and Regards
Anu Palavila

SwePeso
Patron Saint of Lost Yaks

30421 Posts

Posted - 2008-09-30 : 03:42:12

[code]DECLARE @Sample TABLE
(
empID INT,
dur DATETIME
)

INSERT @Sample
SELECT 1, '1900-01-01 07:49:03.000' UNION ALL
SELECT 2, '1900-01-01 02:28:06.000' UNION ALL
SELECT 1, '1900-01-01 03:09:01.000' UNION ALL
SELECT 1, '1900-01-01 06:19:02.000'

SELECT empID,
DATEADD(MILLISECOND, SUM(DATEDIFF(MILLISECOND, 0, dur)), 0)
FROM @Sample
GROUP BY empID
ORDER BY empID

SELECT empID,
DATEADD(SECOND, SUM(DATEDIFF(SECOND, 0, dur)), 0)
FROM @Sample
GROUP BY empID
ORDER BY empID

SELECT empID,
SUM(DATEDIFF(SECOND, 0, dur)) AS Seconds
FROM @Sample
GROUP BY empID
ORDER BY empID

SELECT empID,
DATEADD(MINUTE, SUM(DATEDIFF(MINUTE, 0, dur)), 0)
FROM @Sample
GROUP BY empID
ORDER BY empID[/code]

E 12°55'05.63"
N 56°04'39.26"

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2008-09-30 : 03:44:06

[code]select EmpId,
CAST(SUM(DATEDIFF(ss,0,Duration))/3600 AS varchar(2))+':'+CAST((SUM(DATEDIFF(ss,0,Duration))%3600)/60 AS varchar(2)) +':'+CAST((SUM(DATEDIFF(ss,0,Duration))%3600)%60 AS varchar(2))
FROm YourTable
GROUP BY EmpID[/code]

SwePeso
Patron Saint of Lost Yaks

30421 Posts

Posted - 2008-09-30 : 03:45:14

See http://www.sqlteam.com/forums/topic.asp?TOPIC_ID=107275

E 12°55'05.63"
N 56°04'39.26"

Michael Valentine Jones
Yak DBA Kernel (pronounced Colonel)

7020 Posts

Posted - 2008-09-30 : 09:47:47

This is a general solution to sum elapsed datetime values and return the sum as a datetime value that is an offset from 1900-01-01 00:00:00.000.

select
	TotalElapsedTime =
	dateadd(dd,sum(datediff(dd,0,a.ET)),
	dateadd(hh,sum(datepart(hh,a.ET)),
	dateadd(mi,sum(datepart(mi,a.ET)),
	dateadd(ss,sum(datepart(ss,a.ET)),
	dateadd(ms,sum(datepart(ms,a.ET)),0)))))
from
	( -- Test Data
	select ET = convert(datetime,'1900-01-01 07:49:03.000')	union all
	select ET = convert(datetime,'1900-01-01 02:28:06.000')	union all
	select ET = convert(datetime,'1900-01-01 03:09:01.003')	union all
	select ET = convert(datetime,'1900-01-01 06:19:02.040')	union all
	select ET = convert(datetime,'1900-01-07 06:19:02.000')
	) a


Results:

TotalElapsedTime                                       
------------------------------------------------------ 
1900-01-08 02:04:14.043

(1 row(s) affected)

CODO ERGO SUM

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