sql server - Adding date difference of two dates in Sql for all columns -


i have table 2 date columns arrivaldate , departuredate. need calculate total time period in hours , minutes (not date) of entries in table . can time period of particular record via datediff need sum of date differences in table in hours , minutes .

what doing getting date difference

set @startdate = '10/01/2012 08:40:18.000' set @enddate =   '10/04/2012 09:52:48.000'  select convert(char(8), cast(convert(varchar(23),@enddate,121) datetime) -cast(convert(varchar(23),@startdate,121)as datetime),8) timediff

this gives particular date difference . need date differences in table , there sum.

this query generate results looking for:

select sum(datediff(minute, r.arrivaldate, r.departuredate)) / 60 totalhours      , sum(datediff(minute, r.arrivaldate, r.departuredate)) % 60 totalminutes  tablewithdates r

the first column returned divides total minutes 60 give whole number of hours. second column returned calculates remainder when dividing total minutes 60 give additional minutes remaining. combined 2 columns give sum total of elapsed hours , minutes between of arrival , departure dates.


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