On Jan 13, 4:21 pm, t...@sss.pgh.pa.us (Tom Lane) wrote:
> Nick <nboutel...@gmail.com> writes:
> > SELECT * FROM locations WHERE id = 12345 LIMIT 1
> > uses the primary key (id) index, but...
> > SELECT * FROM locations WHERE id = get_location_id_from_ip(641923892)
> > LIMIT 1
> > does not and is verrry slow. Any ideas why?
>
> You didn't mark the function stable or immutable.http://www.postgresql.org/docs/8.4/static/xfunc-volatility.html
>
> regards, tom lane
>
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That was it, thank you.
