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.