Re: [HACKERS] Dbsize backend integration

From: Andreas Pflug <pgadmin(at)pse-consulting(dot)de>
To: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
Cc: Dave Page <dpage(at)vale-housing(dot)co(dot)uk>, PostgreSQL-patches <pgsql-patches(at)postgresql(dot)org>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: [HACKERS] Dbsize backend integration
Date: 2005-07-03 07:46:48
Message-ID: 42C797E8.8080204@pse-consulting.de
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Bruce Momjian wrote:
> Andreas Pflug wrote:
>
>>Dave Page wrote:
>>
>>>
>>>
>>>
>>>
>>>>-----Original Message-----
>>>>From: Bruce Momjian [mailto:pgman(at)candle(dot)pha(dot)pa(dot)us]
>>>>Sent: 02 July 2005 21:30
>>>>To: Bruce Momjian
>>>>Cc: Dave Page; PostgreSQL-patches; PostgreSQL-development
>>>>Subject: Re: [PATCHES] Dbsize backend integration
>>>>
>>>>
>>>>Is a new version of this patch coming?
>>>
>>>
>>>Yup, attached. Per our earlier conversation, pg_dbfile_size() now
>>>returns the size of a table or index, and pg_relation_size() returns the
>>>total size of a relation and all associated indexes and toast tables
>>>etc.
>>
>>pg_relation_size's name is quite unfortunate, since the 8.0 contrib
>>function does something different. And pg_dbfile_size sounds misleading,
>>suggesting it takes a filename or relfilenode as parameter.
>
>
> Hmm. I don't see how we can call it pg_table_size because people think
> of tables and indexes, while relation has a more inclusive suggestion.

We could, taking the same logic as GRANT which uses the keyword TABLE
for sequences and Indexes too, but it's certainly not favourable.
>
> As far as pg_dbfile_size, do you have any other idea for a name? To me,
> it returns the size of the 'db file' associated with the
> heap/index/toast.

How about pg_relation_size(oid, bool) with the second optional parameter
to count all additional objects too (the 'total' flag).

Regards,
Andreas

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