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jimmy2090
Starting Member
26 Posts |
 Posted - 2013-06-28 : 08:10:21
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| i am facing problem to check the date duration in the same tableVisitor_Name Company Date_In Date_OutAlibaba ABC_Company 01-Jun-13 30-Jun-13Alibaba ABC_Company 02-Jun-13 28-Jun-13as data above, how to prevent the second record been insert into the same table as the same duration even different date. |
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MIK_2008
Master Smack Fu Yak Hacker
1054 Posts |
Posted - 2013-06-28 : 09:00:40
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| By creating a unique constraint on Visitor_Name column, will make sure not to duplicate the vistor again in the tableCheersMIK |
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djj55
Constraint Violating Yak Guru
352 Posts |
Posted - 2013-06-28 : 09:30:32
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| What if the Date_Out of the second one is 03-Jul-13?djj |
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how to check date duration in the table