Update table with NON-NULL values

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Update table with NON-NULL values

Author

Topic

sha_agrawal
Starting Member

24 Posts

Posted - 2008-12-27 : 07:59:49

I convey my regards to all experts whomsoever reading my problem.
I am using SQL SERVER 2000 and VB6.
When I fire Query
Update IssueTbl set IssueQty=issueQty+(select IQty from TmpTable where Tmptable.itemid=issuetable.itemid)

It gives error "Can not insert NULL value in IssueQty". Offcourse Issueqty field in IssueTbl has been set to not accept not Null value but DEFAULT value 0(Zero) has been given. How to avoiod this error?. Pls. help me

bklr
Master Smack Fu Yak Hacker

1693 Posts

Posted - 2008-12-27 : 08:05:40

use isnull or coalesce condition

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2008-12-27 : 11:47:39

quote:
Originally posted by sha_agrawal

I convey my regards to all experts whomsoever reading my problem.
I am using SQL SERVER 2000 and VB6.
When I fire Query
Update IssueTbl set IssueQty=issueQty+(select IQty from TmpTable where Tmptable.itemid=issuetable.itemid)

It gives error "Can not insert NULL value in IssueQty". Offcourse Issueqty field in IssueTbl has been set to not accept not Null value but DEFAULT value 0(Zero) has been given. How to avoiod this error?. Pls. help me

Defaults will be applied only during insert operations. for updation,. you've either use isnull or coalesce to make it 0 or write a trigger. the former one is obviously the best solution.

Jai Krishna
Constraint Violating Yak Guru

333 Posts

Posted - 2008-12-28 : 23:16:11

Try This

Update IssueTbl set IssueQty=issueQty+(select COALESCE(IQty,0) from TmpTable where Tmptable.itemid=issuetable.itemid)

OR

Update IssueTbl set IssueQty=issueQty+(select ISNULL(IQty,0) from TmpTable where Tmptable.itemid=issuetable.itemid)

Jai Krishna

ashishashish
Constraint Violating Yak Guru

408 Posts

Posted - 2008-12-29 : 00:22:29

uSE ISNULL to avoid this,,,,,like ISNULL(value,0)

robint84
Starting Member

1 Post

Posted - 2009-01-13 : 12:56:26

You can try this link to know how to update only NON NULL values in update queries when u are using stored procedure

http://rttechno.blogspot.com/2009/01/updating-only-non-null-parameters-in.html

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