Re: Another Idea: Try Including snapshot with TOAS (was: Including Snapshot Info with Indexes) - Mailing list pgsql-hackers

From Simon Riggs
Subject Re: Another Idea: Try Including snapshot with TOAS (was: Including Snapshot Info with Indexes)
Date
Msg-id 1192257813.4233.594.camel@ebony.site
Whole thread Raw
In response to Re: Another Idea: Try Including snapshot with TOAS (was: Including Snapshot Info with Indexes)  ("Gokulakannan Somasundaram" <gokul007@gmail.com>)
List pgsql-hackers
On Sat, 2007-10-13 at 11:12 +0530, Gokulakannan Somasundaram wrote:

> b) But i don't understand how storing the visibility info in TOAST
> table would help you. In that case you may need to update it for every
> delete/ update happening in the main table. Only thing, it would help
> is if someone wants to do a full table scan on TOAST table alone. May
> be Vacuum of TOAST tables can be done independently. But do you think
> it is worth the loss of performance in Update/Delete? 

No

--  Simon Riggs 2ndQuadrant  http://www.2ndQuadrant.com



pgsql-hackers by date:

Previous
From: "Gokulakannan Somasundaram"
Date:
Subject: Re: Including Snapshot Info with Indexes
Next
From: "Magnus Hagander"
Date:
Subject: Re: Seems we need a post-beta1 initdb already