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Subtract 4 hours from TIME STAMP

 
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latheef

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Joined: 25 Sep 2009
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Location: chennai

PostPosted: Fri Aug 05, 2011 3:03 pm    Post subject: Subtract 4 hours from TIME STAMP
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Hi,

I am retrieving TIME STAMP from DB2 Table in COBOL program. My requirement is I need to subtract exactly 4 hours from the retrieved value from DB2 Table. Is there any time routine to calculate this OR any other way to resolve this. Thanks in Advance.

Thanks,
Latheef
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dbzTHEdinosauer

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PostPosted: Fri Aug 05, 2011 3:10 pm    Post subject:
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depending on your version of DB2, look in the DB2 Reference and search for DATETIME arithmetic.
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yuvrajdutta

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Location: India

PostPosted: Fri Aug 05, 2011 6:58 pm    Post subject: Reply to: Subtract 4 hours from TIME STAMP
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Rather than having COBOL do the DATE-TIME arithmetic why don't you let DB2 do the DATE-TIME arithmetic for you..

Code:

SELECT CURRENT TIMESTAMP AS TIME_NOW, CURRENT TIMESTAMP - 4 HOUR AS TIME_NOW_MINUS_4_HOURS FROM SYSIBM.SYSDUMMY1


Code:

TIME_NOW   TIME_NOW_MINUS_4_HOURS
2011-08-05 15:24:32   2011-08-05 11:24:32
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