Re: Index usage
От | Pedro Alves |
---|---|
Тема | Re: Index usage |
Дата | |
Msg-id | 20030826142014.GA13538@cosmos.inesc.pt обсуждение исходный текст |
Ответ на | Index usage (Pedro Alves <pmalves@think.pt>) |
Список | pgsql-general |
It's the same even with statistics=1000. Is there any way to enable_seqscan=off just for this query? On Tue, Aug 26, 2003 at 10:07:02AM -0400, Tom Lane wrote: > Pedro Alves <pmalves@think.pt> writes: > > The vacuum analyze is run on daily basis, so that cannot be the point. > > The next thing I'd try to improve the planner's guess is to increase the > statistics target for the ra_datacolh column (see ALTER TABLE SET > STATISTICS). It looks like the default of 10 is too small for that > column --- try 100 and see if the rowcount estimates get any closer. > > regards, tom lane -- Pedro Miguel G. Alves pmalves@think.pt THINK - Tecnologias de Informação www.think.pt Tel: +351 21 413 46 00 Av. José Gomes Ferreira Fax: +351 21 413 46 09 nº 13 1495-139 ALGÉS
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