Message-ID: <3B2F4A8E.B6E07DBB@ac-rouen.fr>
Date: Tue, 19 Jun 2001 14:50:22 +0200
From: David BOURIAUD <david.bouriaud@ac-rouen.fr>
MIME-Version: 1.0
To: "pgsql-sql@postgresql.org" <pgsql-sql@postgresql.org>
Subject: Re: About primary keys.
References: <20010619123625.F01A21A78@druid.net>
Content-Type: text/plain; charset=us-ascii
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"D'Arcy J.M. Cain" wrote:
> 
> Thus spake David BOURIAUD
> > Is there a way to get in system tables all the primary keys of a table ?
> > Thanks by advance.
> 
> SELECT pg_class.relname, pg_attribute.attname
>     FROM pg_class, pg_attribute, pg_index
>     WHERE pg_class.oid = pg_attribute.attrelid AND
>         pg_class.oid = pg_index.indrelid AND
>         pg_index.indkey[0] = pg_attribute.attnum AND
>         pg_index.indisprimary = 't'
> 
> Caveat:  Does not work for complex primary keys.

Thanks, but that is my problem actually !
I've got few tables that have complex primary keys. I know that this
shouldn't be, but I have to work with it (no choice, much pain !). Since
I've got to write a php program that will have to work for both type of
tables (many with simple keys, and few with complex ones), how can I
have a same querry work with both ?

-- 
David BOURIAUD
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In a world without walls or fences, what use do we have 
for windows or gates ?
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ICQ#102562021