Re: Table size does not include toast size

Greg Smith <greg@2ndquadrant.com>

From: Greg Smith <greg@2ndquadrant.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Bernd Helmle <mailings@oopsware.de>, Rafael Martinez <r.m.guerrero@usit.uio.no>, PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2009-12-21T17:02:02Z
Lists: pgsql-hackers
Tom Lane wrote:
> Perhaps invent	pg_table_size() = base table + toast table + toast index
> and		pg_indexes_size() = all other indexes for table
> giving us the property pg_table_size + pg_indexes_size =
> pg_total_relation_size
>   
Right; that's exactly the way I'm computing things now, I just have to 
crawl way too much catalog data to do it.  I also agree that if we 
provide pg_table_size, the issue of "pg_relation_size doesn't do what I 
want" goes away without needing to even change the existing 
documentation--people don't come to that section looking for "relation", 
they're looking for "table".

Bernd, there's a basic spec if you have time to work on this. 

-- 
Greg Smith    2ndQuadrant   Baltimore, MD
PostgreSQL Training, Services and Support
greg@2ndQuadrant.com  www.2ndQuadrant.com