From: Tom Lane <tgl@sss.pgh.pa.us>
To: Gregory S. Williamson <gsw@globexplorer.com>
Cc: pgsql-performance@postgresql.org, "PostGIS Users Discussion" <postgis-users@postgis.refractions.net>
Subject: Re: [postgis-users] Is my query planner failing me, or vice versa?
Date: Thu, 15 Dec 2005 00:36:20 -0500
Message-ID: <10011.1134624980@sss.pgh.pa.us> (raw)
In-Reply-To: <71E37EF6B7DCC1499CEA0316A2568328024BBCD3@loki.wc.globexplorer.net>
References: <71E37EF6B7DCC1499CEA0316A2568328024BBCD3@loki.wc.globexplorer.net>
"Gregory S. Williamson" <gsw@globexplorer.com> writes:
> Forgive the cross-posting, but I found myself wondering if might not
> be some way future way of telling the planner that a given table
> (column ?) has a high likelyhood of being TOASTed.
What would you expect the planner to do with the information, exactly?
We could certainly cause ANALYZE to record some estimate of this, but
I'm not too clear on what happens after that...
regards, tom lane
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To: pgsql-performance@postgresql.org
Cc: tgl@sss.pgh.pa.us, gsw@globexplorer.com, postgis-users@postgis.refractions.net
Subject: Re: [postgis-users] Is my query planner failing me, or vice versa?
In-Reply-To: <10011.1134624980@sss.pgh.pa.us>
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