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Converting 'timestamp with time zone' into 'timestamp' datatype..

Posted on 2011-09-07
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Last Modified: 2012-05-12
i have data with 'TIMESTAMP(6) WITH TIME ZONE' ...
2 example values:
02/10/2011 12:05:05.000000 AM -05:00
05/17/2011 03:20:19.000000 AM -04:00
can you give a query to convert this into TIMESTAMP datatype after adding the TZR value..?
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Question by:Rao_S
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6 Comments
 
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Expert Comment

by:slightwv (䄆 Netminder)
ID: 36498192
What is the desired output?
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Accepted Solution

by:
sdstuber earned 500 total points
ID: 36498193
if you're just trying to get the GMT time


CAST(SYSTIMESTAMP AT TIME ZONE 'GMT' AS TIMESTAMP)
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Author Comment

by:Rao_S
ID: 36498223
thanks sdstuber, that is what i what looking for....
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Assisted Solution

by:sdstuber
sdstuber earned 500 total points
ID: 36498232
if you "really" wanted to do the offset math yourself you could do it like this...



   CAST(SYSTIMESTAMP AS TIMESTAMP)
       - NUMTODSINTERVAL(EXTRACT(TIMEZONE_HOUR FROM SYSTIMESTAMP), 'hour')
       - NUMTODSINTERVAL(EXTRACT(TIMEZONE_MINUTE FROM SYSTIMESTAMP), 'minute')


but,  I recommend using the "AT TIME ZONE" method, simpler and more efficient.

as above,  use your own timestamp value for systimestamp
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Author Comment

by:Rao_S
ID: 36498258
thank you...i like the 'at time zone' also.....!...
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Author Closing Comment

by:Rao_S
ID: 36505022
thank you...
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