Re: math problem

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От Vincent Stoessel
Тема Re: math problem
Дата
Msg-id 3D415BD6.70208@xaymaca.com
обсуждение исходный текст
Ответ на Re: math problem  ("Roderick A. Anderson" <raanders@acm.org>)
Ответы Re: math problem  ("Roderick A. Anderson" <raanders@acm.org>)
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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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