Re: When is a record NULL?

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От Jeff Davis
Тема Re: When is a record NULL?
Дата
Msg-id 1248539051.2759.627.camel@jdavis
обсуждение исходный текст
Ответ на Re: When is a record NULL?  ("David E. Wheeler" <david@kineticode.com>)
Ответы Re: When is a record NULL?  ("David E. Wheeler" <david@kineticode.com>)
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On Fri, 2009-07-24 at 15:47 -0700, David E. Wheeler wrote:
>      WHILE (NOT rec_have IS NULL AND rec_have IS DISTINCT FROM NULL)
>         OR (NOT rec_want IS NULL AND rec_want IS DISTINCT FROM NULL)
> 

I don't think you want the "NOT x IS NULL" part at all -- that will
evaluate to false when x = rec(NULL,NULL). I think you just want the "x
IS DISTINCT FROM NULL" part, right? Will that work?

Regards,Jeff Davis



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