From: Roger Tannous <roger77_lb@yahoo.com>
To: pgsql-sql@postgresql.org
Subject: Re: A Table's Primary Key Listing
Date: Thu, 18 Aug 2005 09:40:57 -0700 (PDT)
Message-ID: <20050818164057.38362.qmail@web51906.mail.yahoo.com> (raw)
In-Reply-To: <20050818121844.33a09ad2.darcy@druid.net>
Thanks for your query :)
But it only shows the first of the primary keys of tables having multiple
primary keys :)
This is apparently because of the pg_index.indkey[0] thing, so how can we
manage this query in order to get all of the keys :)
Thanks in advance,
Roger Tannous.
--- "D'Arcy J.M. Cain" <darcy@druid.net> wrote:
> On Thu, 18 Aug 2005 07:36:22 -0700 (PDT)
> Roger Tannous <roger77_lb@yahoo.com> wrote:
> > Is there any means to get a list of the Primary Keys (or simply the
> > Primary Key if there's only one :) ) for a given table using an SQL
> query
>
> Here is what I do in PyGreSQL:
>
> SELECT pg_namespace.nspname, pg_class.relname,pg_attribute.attname
> FROM pg_class
> JOIN pg_namespace ON pg_namespace.oid=pg_class.relnamespace AND
> pg_namespace.nspname NOT LIKE 'pg_%'
> JOIN pg_attribute ON pg_attribute.attrelid=pg_class.oid AND
> pg_attribute.attisdropped='f'
> JOIN pg_index ON pg_index.indrelid=pg_class.oid AND
> pg_index.indisprimary='t' AND
> pg_index.indkey[0]=pg_attribute.attnum
>
> --
> D'Arcy J.M. Cain <darcy@druid.net> | Democracy is three wolves
> http://www.druid.net/darcy/ | and a sheep voting on
> +1 416 425 1212 (DoD#0082) (eNTP) | what's for dinner.
>
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To: pgsql-sql@postgresql.org
Cc: roger77_lb@yahoo.com
Subject: Re: A Table's Primary Key Listing
In-Reply-To: <20050818164057.38362.qmail@web51906.mail.yahoo.com>
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