From: Markus Schaber <schabi@logix-tt.com>
To: Peter Eisentraut <peter_e@gmx.net>
Cc: pgsql-performance@postgresql.org, Michael Stone <mstone+postgres@mathom.us>
Subject: Re: Index scan startup time
Date: Thu, 30 Mar 2006 14:35:53 +0200
Message-ID: <442BD0A9.8050805@logix-tt.com> (raw)
In-Reply-To: <200603301424.27765.peter_e@gmx.net>
References: <200603301359.11038.peter_e@gmx.net>
<20060330120604.GJ6811@mathom.us>
<200603301424.27765.peter_e@gmx.net>
Hi, Peter,
Peter Eisentraut wrote:
>>>The table has seen VACUUM FULL and REINDEX before this.
>>But no analyze?
> ANALYZE as well, but the plan choice is not the point anyway.
Maybe you could add a combined Index on activity_id and state, or (if
you use this kind of query more often) a conditional index on
activity_id where state in (10000,10001).
Btw, PostgreSQL 8.1 could AND two bitmap index scans on the activity and
state indices, and get the result faster (i presume).
Markus
--
Markus Schaber | Logical Tracking&Tracing International AG
Dipl. Inf. | Software Development GIS
Fight against software patents in EU! www.ffii.org www.nosoftwarepatents.org
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To: pgsql-performance@postgresql.org
Cc: schabi@logix-tt.com, peter_e@gmx.net, mstone+postgres@mathom.us
Subject: Re: Index scan startup time
In-Reply-To: <442BD0A9.8050805@logix-tt.com>
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