How Do I Get Perfoms Calculation On The Time In Sql Server 2008 R2

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SQL-Server-2008R2

CSS

         Date                       Event  Time

2014-11-22 00:00:00.000        2014-11-22 12:14:06.000
2014-11-22 00:00:00.000        2014-11-22 14:15:48.000
2014-11-22 00:00:00.000        2014-11-22 14:19:49.000
2014-11-22 00:00:00.000        2014-11-22 14:22:44.000


In event time column i want to separate first time and last time against single date and display first time as IN Time column and last time as OUT Time column and then calculate time and display total time, how can i do this

Posted 18-Mar-15 22:37pm

Umer Attiq

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John C Rayan · Accepted Answer · 2015-03-19T00:03:00

Tested in SQL 2008 R2 and worked fine. Change the table and columns matching to yours. You could use CTE to make it better if you suffer from performance.

SQL

select distinct cast(eventdate as date) ,
   MIN(eventdate) OVER(PARTITION BY (cast(eventdate as date))) as intime,
   MAX(eventdate) OVER(PARTITION BY (cast(eventdate as date))) as outtime,
   cast((MAX(eventdate) OVER(PARTITION BY (cast(eventdate as date))) -  MIN(eventdate) OVER(PARTITION BY (cast(eventdate as date)))) as time) as totaltime

from eventdates