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Date format in oracle

Posted on 2009-05-05
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Last Modified: 2013-12-19
Aug 28 2006  5:12:42:000AM

How to specify the date format..?

"Mon dd yyyy hh:mi:ss.....AM"

i tried FF3 after the seconds field but not getting recognized ?
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Question by:vishali_vishu
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9 Comments
 
LVL 40

Expert Comment

by:mrjoltcola
ID: 24309313
date does not allow FF3, you must use timestamp if you want that format, or drop the ff3 since DATE only stores seconds. SYSTIMESTAMP is more granular.


select to_char(systimestamp, 'MON dd yyyy hh:mi:ss.ff3') from dual;
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Expert Comment

by:mrjoltcola
ID: 24309326
Sorry, typo. I meant TIMESTAMP is more granular
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Author Comment

by:vishali_vishu
ID: 24309549
How to change a varchar in that format to timestamp.?

something like to_date ? what's the function used to convert.
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LVL 40

Accepted Solution

by:
mrjoltcola earned 1000 total points
ID: 24309649
select to_timestamp('MAY 05 2009 05:25:42.032', 'MON dd yyyy hh:mi:ss.ff3') from dual;
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Assisted Solution

by:tzxie2000
tzxie2000 earned 1000 total points
ID: 24310688
Like this:
SELECT TO_TIMESTAMP('MAY 05 2009 05:25:42.032','MON DD yyyy HH:MI:SS,ff3',
                    'NLS_DATE_LANGUAGE=american')
  FROM DUAL;
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Expert Comment

by:mrjoltcola
ID: 24310820
You don't normally need to hardcode like that, you should use the Oracle environment. It will use your database/instance/session NLS parameters for that. The only time you would hardcode that, or would provide it explicitly would be in case of a international web application that stores custom language/timezone for each user and your web app is pooling database connections where you cannot set it at the session level.
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Expert Comment

by:tzxie2000
ID: 24311180
Agree.
The difference is SS,ff3
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LVL 40

Expert Comment

by:mrjoltcola
ID: 24354741
@vishali, can you explain why you accepted the latter solution? Both solutions produce acceptable results and answered your question, however the original question was answered in my very first reply.
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