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rn5a
Starting Member
25 Posts |
 Posted - 2008-10-13 : 03:03:23
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| A SQL Server DB table has 3 fields - StartDateTime, EndDateTime & Duration. The datatype of the first 2 fields is datetime. The 3rd field - Duration - is the time difference between the first 2 fields. For e.g. if one record under StartDateTime is 05/08/2008 7:00:00 AM & the corresponding record under EndDateTime is 05/08/2008 11:30:00 PM, then the value under the Duration field will be 16:30 i.e. 16 hours & 30 minutes. Please note that I am using ASP.NET to calculate this time difference. I also want the sum of all the records under the Duration field. Now here are my queries:1. What datatype should I set the column Duration to? 2. Should I divide the Duration column into 2 columns (hours & minutes) & set the datatype of the 2 columns to int so that I can get the sum easily?Thanks,Ron |
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visakh16
Very Important crosS Applying yaK Herder
52326 Posts |
Posted - 2008-10-13 : 03:09:43
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| refer the below link. it dicusses how to handle duration datahttp://www.sqlteam.com/article/working-with-time-spans-and-durations-in-sql-server |
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Sum of Time Difference