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help / color / mirror / Atom feedFrom: Tom Lane <tgl@sss.pgh.pa.us>
To: Sebastien FLAESCH <sf@4js.com>
Cc: pgsql-sql@postgresql.org
Subject: Re: TRUNCATE TABLE corrupts pg_class.relfilenode = pg_attrdef.pg_attrdef
Date: Mon, 22 May 2017 08:04:23 -0400
Message-ID: <64541.1495454663@sss.pgh.pa.us> (raw)
In-Reply-To: <66def74b-633e-65a0-cf44-4d486f15ebd9@4js.com>
References: <66def74b-633e-65a0-cf44-4d486f15ebd9@4js.com>
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Sebastien FLAESCH <sf@4js.com> writes:
> It is normal that a TRUNCATE TABLE statement changes the table/sequence relation in pg_attrdef?
It is normal for TRUNCATE, as well as several other kinds of DDL, to
change relfilenode.
> test1=> select a.adsrc from pg_class p join pg_attrdef a on (p.relfilenode = a.adrelid) where lower(p.relname) = lower('mytab');
This query is simply wrong; the join column should be p.oid. See the
system catalog definitions,
https://www.postgresql.org/docs/current/static/catalogs.html
regards, tom lane
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To: pgsql-sql@postgresql.org
Cc: tgl@sss.pgh.pa.us, sf@4js.com
Subject: Re: TRUNCATE TABLE corrupts pg_class.relfilenode = pg_attrdef.pg_attrdef
In-Reply-To: <64541.1495454663@sss.pgh.pa.us>
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