From: Josh Berkus <josh@agliodbs.com>
To: Mark Kirkwood <markir@coretech.co.nz>
Cc: pgsql-docs@postgresql.org
Subject: Re: How the planner uses statistics
Date: Sat, 12 Feb 2005 15:22:10 -0800
Message-ID: <200502121522.10112.josh@agliodbs.com> (raw)
In-Reply-To: <420A7E23.1090503@coretech.co.nz>
References: <42082E1C.8090408@coretech.co.nz>
<420A7E23.1090503@coretech.co.nz>
Mark,
> > I wanted to understand how the planner 'knows' how many rows are likely
> > to be emitted in a given stage of a query, and wrote down some examples
> > for my own benefit - I then wondered if this would be a good addition to
> > the 'Performance Tips' chapter. So... err here it is.
> >
> > Comments welcome.
Terrific. I'd be happy to post this at www.powerpostgresql.org, if you want;
I think a lot of people would be interested.
--
Josh Berkus
Aglio Database Solutions
San Francisco
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To: pgsql-docs@postgresql.org
Cc: josh@agliodbs.com, markir@coretech.co.nz
Subject: Re: How the planner uses statistics
In-Reply-To: <200502121522.10112.josh@agliodbs.com>
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