Re: An idle thought - Mailing list pgsql-hackers

From Jeff Davis
Subject Re: An idle thought
Date
Msg-id 1268936467.4053.511.camel@monkey-cat.sm.truviso.com
Whole thread Raw
In response to Re: An idle thought  (Gokulakannan Somasundaram <gokul007@gmail.com>)
Responses Re: An idle thought
List pgsql-hackers
On Thu, 2010-03-18 at 14:29 +0530, Gokulakannan Somasundaram wrote:

>         If you want it to be cheaply updatable (or even cheaply
>         readable),
>         compression is not what you're going to do.
>         
>                                regards, tom lane
>         
>         
>         
> +1.. 

The visibility map itself is already an example of compression. If
visibility information were randomly distributed among tuples, the
visibility map would be nearly useless.

Regards,Jeff Davis




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