Re: indexing tables using my owns functions - Mailing list pgsql-general

From Martijn van Oosterhout
Subject Re: indexing tables using my owns functions
Date
Msg-id 20071127181156.GD19328@svana.org
Whole thread Raw
In response to indexing tables using my owns functions  ("Pau Marc Munoz Torres" <paumarc.munoz@bioinf.uab.cat>)
List pgsql-general
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@svana.org>   http://svana.org/kleptog/
> Those who make peaceful revolution impossible will make violent revolution inevitable.
>  -- John F Kennedy

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