From: Steinar H. Gunderson <sgunderson@bigfoot.com>
To: pgsql-performance@postgresql.org
Cc: Peter Eisentraut <peter_e@gmx.net>
Subject: Re: Index scan startup time
Date: Thu, 30 Mar 2006 14:51:47 +0200
Message-ID: <20060330125147.GA13611@uio.no> (raw)
In-Reply-To: <20060330124251.GK6811@mathom.us>
References: <200603301359.11038.peter_e@gmx.net>
<20060330120206.GA13075@uio.no>
<200603301423.54510.peter_e@gmx.net>
<20060330123134.GA13408@uio.no>
<20060330124251.GK6811@mathom.us>
On Thu, Mar 30, 2006 at 07:42:53AM -0500, Michael Stone wrote:
> Yes. And the estimates are bad enough (orders of magnitude) that I can't
> help but wonder whether pg could come up with a better plan with better
> statistics:
>
>>>>> -> Index Scan using activity_pk on activity (cost=0.00..40717259.91
>>>>> rows=6538650 width=8) (actual time=207356.050..207356.722 rows=100
>>>>> loops=1) Filter: ((state = 10000) OR (state = 10001))
Isn't the rows=100 here because of the LIMIT?
/* Steinar */
--
Homepage: http://www.sesse.net/
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To: pgsql-performance@postgresql.org
Cc: sgunderson@bigfoot.com, peter_e@gmx.net
Subject: Re: Index scan startup time
In-Reply-To: <20060330125147.GA13611@uio.no>
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