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Update nulls

 
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monaco
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Joined: 20 May 2004
Posts: 77
Topics: 31
PostPosted: Wed Jul 28, 2004 3:24 am    Post subject: Update nulls Reply with quote
Hi all,

i have a table which accepts nulls in two columns (char and decimal). i want this table doent accept nulls.
The problem is how to convert the data which is already in the table.

How can i reload the data which is already in the table if the table doesnt accept nulls anymore?

Kind regards.
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kolusu
Site Admin
Site Admin


Joined: 26 Nov 2002
Posts: 12380
Topics: 75
Location: San Jose
PostPosted: Wed Jul 28, 2004 5:20 am    Post subject: Reply with quote
monaco,

You need to ALTER the column definitions so that in future they will not have any nulls.

Check this link

http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/DSNSQH11/5.10?DT=20010718164132

You can easily update the null columns. Try this

Code:


 UPDATE TABLE SET COL1 = 'SOME VALUE' WHERE COL1 IS NULL
 UPDATE TABLE SET COL2 = 0 WHERE COL2 IS NULL



Check this link for NULL predicate

http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/DSNSQH11/2.21.7?SHELF=&DT=20010718164132&CASE=

Hope this helps...

Cheers

Kolusu
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monaco
Beginner


Joined: 20 May 2004
Posts: 77
Topics: 31
PostPosted: Wed Jul 28, 2004 12:06 pm    Post subject: Reply with quote
Thanks a lot.

It is very usefull.
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