Re: [GENERAL] Help needed optimizing query

2007-11-29 Thread Martijn van Oosterhout
On Thu, Nov 29, 2007 at 01:26:00PM +, Pedro Doria Meunier wrote: > Hi People. > > I need some help optimizing this query: > I still get Seq Scans although all used fields are indexed, hence the > time used... :-( A seq scan on a table with 10 rows is *good*. An index would take longer. What

[GENERAL] Help needed optimizing query

2007-11-29 Thread Pedro Doria Meunier
Hi People. I need some help optimizing this query: SELECT u.friendly_name, distance(transform(u.curr_location,32628), rc.agg_geometry) AS thedistance, u.mobile FROM (SELECT transform(collect(r.geometry),32628) AS agg_geometry, t.county FROM pt_madeira_roads r, pt_madeira_toponymy t WHERE r.name