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To: Josh Berkus <josh@agliodbs.com>
cc: pgsql-performance@postgresql.org
Subject: Re: HOT TOAST? 
In-reply-to: <200802130950.15431.josh@agliodbs.com> 
References: <200802130950.15431.josh@agliodbs.com>
Comments: In-reply-to Josh Berkus <josh@agliodbs.com>
	message dated "Wed, 13 Feb 2008 09:50:15 -0800"
Date: Wed, 13 Feb 2008 13:04:39 -0500
Message-ID: <20169.1202925879@sss.pgh.pa.us>
From: Tom Lane <tgl@sss.pgh.pa.us>
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Josh Berkus <josh@agliodbs.com> writes:
> Does anyone know if HOT is compatible with pg_toast tables, or do TOASTed rows 
> simply get excluded from HOT?

The current TOAST code never does any updates, only inserts/deletes.
But the HOT logic should be able to reclaim deleted rows early via
pruning.

			regards, tom lane