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DB2 coalesce function for replacing null date

 
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Sanath sekhar Reddy N

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Joined: 31 Oct 2012
Posts: 31
Location: INDIA

PostPosted: Thu Jul 11, 2013 6:11 pm    Post subject: DB2 coalesce function for replacing null date
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Hi

Could you please help me in resolving the below.
I have to replace the null value in date field in the table A
with 00.00.0000 .

Please can any one help me in time.


Regards
Sanath sekhar Reddy.N
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Auryn

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Joined: 11 Jan 2006
Posts: 45
Location: Lower Saxony (DE)

PostPosted: Thu Jul 11, 2013 6:33 pm    Post subject: Solution depends on type of result column
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If the type of the result column is DATE your desired value is not valid. The minimum valid date in DB2 z/OS is '01.01.0001'.
But if type of result column is CHAR(10) you can use
Code:
COALESCE(CHAR(my_date_col), '00.00.0000')
.
But pay attention of the result a date string containing 'DD.MM.YYYY'. It's better to use the reverse format 'YYYY.MM.DD'.
In above sample
Code:
COALESCE(CHAR(my_date_col), '0000.00.00')


If not every part of the date (or time as well) is known and you would like to store zeroes or spaces in that case you have to use a date string because i.e. date '00.12.2013' is invalid as well.
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