Re: indexing tables using my owns functions

On Mon, Nov 26, 2007 at 04:54:10PM +0100, Pau Marc Munoz Torres wrote:
> Hi every body
>
> Recently i wrote my own function into postgesql... and it works perfecly!!,
> now i would like use it to index a table like this guy do at the link (
> http://www.faqs.org/docs/ppbook/r24254.htm)
>
> but i get the following error
>
> mhc2db=> create index h2iab on precalc (idr(p1,p4,p6,p7,p9,'H-2*IAb'));
> ERROR: functions in index expression must be marked IMMUTABLE

Where you declare the function, add the modifier IMMUTABLE.

Have a nice day,
--
Martijn van Oosterhout <kleptog(at)svana(dot)org> http://svana.org/kleptog/
> Those who make peaceful revolution impossible will make violent revolution inevitable.
> -- John F Kennedy