Re: Left Join Not Using Index?
От
Lincoln Yeoh
Тема
Re: Left Join Not Using Index?
Дата
Msg-id
5.2.1.1.1.20030423135103.022aea48@mbox.jaring.my
Ответ на
Re: Left Join Not Using Index? (Hunter Hillegas)
Список
Дерево обсуждения
Re: Left Join Not Using Index? "Dann Corbit" <DCorbit@connx.com>
Re: Left Join Not Using Index? Tom Lane <tgl@sss.pgh.pa.us>
Re: Left Join Not Using Index? Hunter Hillegas <lists@lastonepicked.com>
Re: Left Join Not Using Index? Tom Lane <tgl@sss.pgh.pa.us>
Re: Left Join Not Using Index? Hunter Hillegas <lists@lastonepicked.com>
Re: Left Join Not Using Index? Dennis Gearon <gearond@cvc.net>
Re: Left Join Not Using Index? Lincoln Yeoh <lyeoh@pop.jaring.my>
Re: Left Join Not Using Index? Hunter Hillegas <lists@lastonepicked.com>
Re: Left Join Not Using Index? Hunter Hillegas <lists@lastonepicked.com>
I think he said you have to change your query or your database layout to get better speed. Can you think of a different query or set of queries that will do what you want? What are you trying to achieve with your query? Link. At 10:35 PM 4/22/2003 -0700, Hunter Hillegas wrote: >So, what you're basically saying is that my best bet for improving the speed >of a query to get this result set is to tweak my settings and get faster >hardware? > > > From: Tom Lane > > Date: Wed, 23 Apr 2003 01:30:05 -0400 > > To: Hunter Hillegas > > Cc: Dann Corbit , Stephan Szabo > > , PostgreSQL > > Subject: Re: [GENERAL] Left Join Not Using Index? > > > > Hunter Hillegas writes: > >> Can anyone point me in another direction to optimize this > > > > AFAICS you cannot improve that without changing the query structure > > and/or the database layout. Because the WHERE clause is a bunch of OR'd > > conditions, it's useless for restricting either individual table scan > > making up the join --- there is really no implementation short of
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