| From: | Vincent Stoessel <vincent(at)xaymaca(dot)com> |
|---|---|
| To: | "Roderick A(dot) Anderson" <raanders(at)acm(dot)org> |
| Cc: | pgsql-general(at)postgresql(dot)org |
| Subject: | Re: math problem |
| Date: | 2002-07-26 14:25:26 |
| Message-ID: | 3D415BD6.70208@xaymaca.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-general |
Thank You all for the answer.
I appreciate it a lot. For the record the function is spelled
coalesce.
Later
Roderick A. Anderson wrote:
> On Thu, 25 Jul 2002, Vincent Stoessel wrote:
>
>
>>now my problem comes into play when one of the
>>columns is empty. I always get a NULL or empty total.
>>this makes sence since NULL + 5 does not produce anything.
>
>
> I think colesce is your friend
>
> select cola, colb, sum(colesce(cola,0) + colesce(colb,0)) from ....
>
> I've never had to use it put I've seen this situation addressed here
> before. Table 9.3, pg 113 the Elephant book.
>
>
> Rod
--
Vincent Stoessel
Linux Systems Developer
vincent xaymaca.com
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