Re: Table size does not include toast size

Bernd Helmle <mailings@oopsware.de>

From: Bernd Helmle <mailings@oopsware.de>
To: Greg Smith <greg@2ndquadrant.com>, Tom Lane <tgl@sss.pgh.pa.us>
Cc: Rafael Martinez <r.m.guerrero@usit.uio.no>, PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2009-12-22T14:11:40Z
Lists: pgsql-hackers

--On 21. Dezember 2009 12:02:02 -0500 Greg Smith <greg@2ndquadrant.com> 
wrote:

> 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.

I see if i can get some time for it during christmas vacation (its on my 
radar for a longer period of time). I'm still working on this NOT NULL 
pg_constraint representation and would like to propose a patch fairly soon 
for this.

-- 
Thanks

	Bernd