Date: Wed, 29 Oct 2003 17:36:53 +0200
From: Stef <svb@ucs.co.za>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Rod Taylor <rbt@rbt.ca>, pgsql-admin@postgresql.org,
	pgsql-sql@postgresql.org
Subject: Re: [SQL] Table versions
Message-Id: <20031029173653.522c804a.svb@ucs.co.za>
In-Reply-To: <3731.1067437850@sss.pgh.pa.us>
References: <20031029125752.35069e3b.svb@ucs.co.za>
	<1067435458.99917.34.camel@jester> <3731.1067437850@sss.pgh.pa.us>
User-Agent: sillypheed-claws (anti-aliased)
Mime-Version: 1.0
Content-Type: multipart/signed; protocol="application/pgp-signature";
	micalg="pgp-sha1";
	boundary="Signature=_Wed__29_Oct_2003_17_36_53_+0200_sr9mojtohM78H8KV"

--Signature=_Wed__29_Oct_2003_17_36_53_+0200_sr9mojtohM78H8KV
Content-Type: text/plain; charset=US-ASCII
Content-Disposition: inline
Content-Transfer-Encoding: 7bit

Thanks guys,

I had a feeling this was the case, but wasn't sure.
The one-version pg_dump looks like a winner.

Regards
Stefan

##START##
=> Rod Taylor <rbt@rbt.ca> writes:
=> >> What I did next, is put a trigger on pg_attribute that should, in theory,
=> >> on insert and update, fire up a function that will increment a version
=> 
=> > System tables do not use the same process for row insertion / updates as
=> > the rest of the system. You're trigger will rarely be fired.
=> 
=> s/rarely/never/.  We do not support triggers on system catalogs.  The
=> system should have done its best to prevent you from creating one ...
=> I suppose you had to hack around with a "postgres -O" standalone backend?
=> 
=> Returning to the original problem, it seems to me that comparing "pg_dump
=> -s" output is a reasonable way to proceed.  The problem of inconsistent
=> output format across pg_dump versions is a red herring --- just use a
=> single pg_dump version (the one for your newest server) for all the
=> dumps.  Recent pg_dump versions still talk to older servers, back to 7.0
=> or thereabouts.
=> 
=> 			regards, tom lane
=> 

--Signature=_Wed__29_Oct_2003_17_36_53_+0200_sr9mojtohM78H8KV
Content-Type: application/pgp-signature

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.3 (GNU/Linux)

iD8DBQE/n96bgDYs3UkRjZkRAuwmAKCcybHQr/Cfh1AoqU8VaTrL9+jwRgCff3l+
0ehnKZqbdeThRvOPMiNMm0k=
=yq/Z
-----END PGP SIGNATURE-----

--Signature=_Wed__29_Oct_2003_17_36_53_+0200_sr9mojtohM78H8KV--