Re: existence question

From: Bricklen <bricklen-rem_at_yahoo.comz>
Date: Wed, 21 Jul 2004 14:34:31 GMT
Message-ID: <X9vLc.107244$eO.66262@edtnps89>

Jeff Kish wrote:

> Greetings.
>
> Can someone help me out here?
> I have a table. with a unique index across five columns (c1, c2, c3, c4, c5.
>
> I was trying to figure out if there was a way to form an sql where clause that
> would tell me if a certain business rule would be violated.
>
> The rule says, for a given (c1 c2), if you have any rows that have c4 and c5
> null, then you can't have any other rows for that (c1 c2) which have a not
> null c4 or a not null c5.
>
> I'm a bit out of practice.
>
>
> Thanks
> Jeff
> Jeff Kish

A CASE statement may do what you need, providing that you are on 816(?)+ Received on Wed Jul 21 2004 - 09:34:31 CDT