Re: Why is the query not using the index for sorting?

Definitely after.

Jonathan

-----Original Message-----
From: pgsql-performance-owner(at)postgresql(dot)org
[mailto:pgsql-performance-owner(at)postgresql(dot)org] On Behalf Of Matthew
Wakeling
Sent: Monday, November 23, 2009 1:00 PM
To: Jonathan Blitz
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: [PERFORM] Why is the query not using the index for sorting?

On Sun, 22 Nov 2009, Jonathan Blitz wrote:
> I have a table with a number of columns.
>  
> I perform
>  
> Select *
> from table
> order by a,b
>  
> There is an index on a,b which is clustered (as well as indexes on a and b
alone).
> I have issued the cluster and anyalze commands.

Did you analyse *after* creating the index and clustering, or before?

Matthew

--
[About NP-completeness] These are the problems that make efficient use of
the Fairy Godmother. -- Computer Science Lecturer
--
Sent via pgsql-performance mailing list (pgsql-performance(at)postgresql(dot)org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-performance
No virus found in this incoming message.
Checked by AVG - www.avg.com
Version: 9.0.709 / Virus Database: 270.14.76/2517 - Release Date: 11/22/09
21:40:00