Date: Tue, 18 Dec 2007 11:29:15 -0800
To: pgsql-sql@postgresql.org
From: Steve Midgley <public@misuse.org>
Subject: Re: System catalog future changes
In-Reply-To: <2C8AD9F2-4891-4D96-87D1-7101A180CC79@myemma.com>
References: <20071218165836.4EFD42E004C@postgresql.org>
	<2C8AD9F2-4891-4D96-87D1-7101A180CC79@myemma.com>
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Thanks Erik - that cleans things up significantly for me.

For the record, the SQL for finding all the table=20
names (alpha ordered) in the public schema using pg_tables view is:

select tablename from pg_tables where=20
schemaname=3D'public' order by tablename

Steve

At 09:38 AM 12/18/2007, Erik Jones wrote:
>On Dec 18, 2007, at 10:53 AM, Steve Midgley wrote:
>
>>Hello again,
>>
>>Reading a previous recent post and answers called "Describe Table"
>>got me thinking about a little piece of SQL I use in an application
>>to get a list of all the tables for a specific namespace:
>>
>>select pg_class.relname as table_name
>>from pg_class
>>  join pg_namespace on pg_namespace.oid =3D relnamespace
>>where pg_class.relkind =3D 'r' and pg_namespace.nspname =3D 'public'
>>order by pg_class.relname
>>
>>I have assumed that this sort of query would be relatively
>>"durable" - that future system catalog changes are unlikely to make
>>this query stop working? Does anyone have any knowledge of how
>>"fixed" the columns and values of this query are (i.e. are there a
>>lot of internal and external dependencies that make future Pg
>>versiosn unlikely to break the above code)?
>>
>>Any other input on the above SQL - should I be doing this in
>>another way?
>>
>>Thanks for any thoughts or advice,
>
>If all you're looking for is regular tables, the I'd use the
>pg_tables view.
>
>Erik Jones
>
>Software Developer | Emma=AE
>erik@myemma.com
>800.595.4401 or 615.292.5888
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>