From: Tom Lane <tgl@sss.pgh.pa.us>
To: Steve Crawford <scrawford@pinpointresearch.com>
Cc: Lukasz Brodziak <lukasz.brodziak@gmail.com>
Cc: pgsql-admin@postgresql.org
Subject: Re: pg_attribute file in PostgreSQL 9.0
Date: Wed, 07 Mar 2012 10:01:12 -0500
Message-ID: <7061.1331132472@sss.pgh.pa.us> (raw)
In-Reply-To: <4F577217.3080204@pinpointresearch.com>
References: <CAGWYGjX4Lcu19BKFgX+ttz7bHypd1j-WbP98S_GGUSGe_VtBew@mail.gmail.com>
<4F577217.3080204@pinpointresearch.com>
Steve Crawford <scrawford@pinpointresearch.com> writes:
> On 03/07/2012 05:14 AM, Lukasz Brodziak wrote:
>> I have a question regarding pg_attribute. In which file it is stored
>> because the relfilenode for it shows 0 and file 1249 isn't present in
>> the folder.
> select pg_relation_filepath('pg_attribute');
> From the docs, relfilenode is:
> "Name of the on-disk file of this relation; zero means this is a
> "mapped" relation whose disk file name is determined by low-level state"
> However the meaning "mapped relation" and "low-level state" are
> difficult to divine from the docs. Go with the function.
Or use pg_relation_filenode() if you want the result of the mapping.
regards, tom lane
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To: pgsql-admin@postgresql.org
Cc: tgl@sss.pgh.pa.us, scrawford@pinpointresearch.com, lukasz.brodziak@gmail.com
Subject: Re: pg_attribute file in PostgreSQL 9.0
In-Reply-To: <7061.1331132472@sss.pgh.pa.us>
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