Re: Speeding up select distinct - Mailing list pgsql-performance

Wow, what a fast response !!!

>>>>> "PFC" == PFC  <lists@boutiquenumerique.com> writes:

  PFC>     Try :

  PFC>     SELECT owner from pictures group by owner;

That's a slight improvement, but there's still a seq scan on pictures:

 HashAggregate  (cost=114.38..114.38 rows=21 width=4) (actual time=7.585..7.605 rows=21 loops=1)
   ->  Seq Scan on pictures  (cost=0.00..103.70 rows=4270 width=4) (actual time=0.015..3.272 rows=4270 loops=1)
 Total runtime: 7.719 ms




--
Laurent Martelli
laurent@aopsys.com                                Java Aspect Components
http://www.aopsys.com/                          http://jac.objectweb.org