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To find the previous Month date

 
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prav_06
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PostPosted: Tue Nov 27, 2007 11:57 am    Post subject: To find the previous Month date
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Hi All,

I need to find the previous month's date, say suppose todays date is 01-01-2008 (1st Jan 2008), My query shd give an output like 01-12-2007, There is an option to get current date from SYSIBM.SYSDUMMY1, am planning to use this query to extract the previous month's date, please let me know the query by which I can do the same. Thanks in Advance

Thamilzan.
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prav_06
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PostPosted: Tue Nov 27, 2007 12:11 pm    Post subject:
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Hi All,

I think the below query works

SELECT CURRENT_TIMESTAMP - 1 MONTH
FROM SYSIBM.SYSDUMMY1;

please correct me if am wrong

Thamilzan.
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Srihari Gonugunta

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PostPosted: Tue Nov 27, 2007 12:42 pm    Post subject:
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Yes..But it should have been
SELECT DATE(CURRENT_TIMESTAMP - 1 MONTH)
FROM SYSIBM.SYSDUMMY1;
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enrico-sorichetti

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PostPosted: Tue Nov 27, 2007 12:51 pm    Post subject: Reply to: To find the previous Month date
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Quote:
say suppose todays date is 01-01-2008 (1st Jan 2008), My query shd give an output like 01-12-2007,



I feel that Your "business needs" need better understanding
and the query reviewed accordingly!

working with dates is a murky field!
what if todays date is 31/03/007 ( 31st March 2007 )

I am always amazed by the carelessness with which people
work on dates.....
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prav_06
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PostPosted: Wed Nov 28, 2007 6:09 pm    Post subject:
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Enrico,

Valid point , but I considered the situation and pls find the query and its o/p below

Code:
select (current_timestamp - 9 month + 1 day) from sysibm.sysdummy1;   
---------+---------+---------+---------+---------+---------+---------+-
                                                                       
---------+---------+---------+---------+---------+---------+---------+-
2007-03-01-13.28.20.151246                                             
DSNE610I NUMBER OF ROWS DISPLAYED IS 1   



and

Code:
select (current_timestamp - 9 month - 1 day) from sysibm.sysdummy1;
---------+---------+---------+---------+---------+---------+-------
                                                                   
---------+---------+---------+---------+---------+---------+-------
2007-02-27-13.32.52.450104                                         
DSNE610I NUMBER OF ROWS DISPLAYED IS 1


The above queery has given the expected value and I believe it should give the 27th of feb 2007 when the foll query is run on 31st march

Code:
Select (current_timestamp - 1 month) from sysibm.sysdummy1;   


Please correct me if am wrong

Thamilzan.
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