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* (non)zero function
@ 2005-03-27 15:58 Enrico Weigelt <weigelt@metux.de>
2005-03-27 16:51 ` Re: (non)zero function Bruno Wolff III <bruno@wolff.to>
2005-03-28 08:42 ` Re: (non)zero function Christian Kratzer <ck-lists@cksoft.de>
0 siblings, 2 replies; 3+ messages in thread
From: Enrico Weigelt @ 2005-03-27 15:58 UTC (permalink / raw)
To: pgsql-sql
Hi folks,
is there an function returning true if the argument is null or
zero (just to make some queries more concise). Of course its
trivial to implement as SQL function, but if postgresql already
provides such a function, I would prefer using it.
cu
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^ permalink raw reply [nested|flat] 3+ messages in thread
* Re: (non)zero function
2005-03-27 15:58 (non)zero function Enrico Weigelt <weigelt@metux.de>
@ 2005-03-27 16:51 ` Bruno Wolff III <bruno@wolff.to>
1 sibling, 0 replies; 3+ messages in thread
From: Bruno Wolff III @ 2005-03-27 16:51 UTC (permalink / raw)
To: Enrico Weigelt <weigelt@metux.de>; +Cc: pgsql-sql
On Sun, Mar 27, 2005 at 17:58:07 +0200,
Enrico Weigelt <weigelt@metux.de> wrote:
>
> Hi folks,
>
>
> is there an function returning true if the argument is null or
> zero (just to make some queries more concise). Of course its
> trivial to implement as SQL function, but if postgresql already
> provides such a function, I would prefer using it.
No.
^ permalink raw reply [nested|flat] 3+ messages in thread
* Re: (non)zero function
2005-03-27 15:58 (non)zero function Enrico Weigelt <weigelt@metux.de>
@ 2005-03-28 08:42 ` Christian Kratzer <ck-lists@cksoft.de>
1 sibling, 0 replies; 3+ messages in thread
From: Christian Kratzer @ 2005-03-28 08:42 UTC (permalink / raw)
To: Enrico Weigelt <weigelt@metux.de>; +Cc: pgsql-sql
Hi,
On Sun, 27 Mar 2005, Enrico Weigelt wrote:
>
> Hi folks,
>
>
> is there an function returning true if the argument is null or
> zero (just to make some queries more concise). Of course its
> trivial to implement as SQL function, but if postgresql already
> provides such a function, I would prefer using it.
Lookup the documentation on COALESCE()
http://www.postgresql.org/docs/current/static/functions-conditional.html
9.13.2. COALESCE
Greetings
Christian
--
Christian Kratzer ck@cksoft.de
CK Software GmbH http://www.cksoft.de/
Phone: +49 7452 889 135 Fax: +49 7452 889 136
^ permalink raw reply [nested|flat] 3+ messages in thread
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2005-03-27 15:58 (non)zero function Enrico Weigelt <weigelt@metux.de>
2005-03-27 16:51 ` Bruno Wolff III <bruno@wolff.to>
2005-03-28 08:42 ` Christian Kratzer <ck-lists@cksoft.de>
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