From: D'Arcy J.M. Cain <darcy@druid.net>
To: Roger Tannous <roger77_lb@yahoo.com>
Cc: pgsql-sql@postgresql.org
Subject: Re: A Table's Primary Key Listing
Date: Thu, 18 Aug 2005 12:18:44 -0400
Message-ID: <20050818121844.33a09ad2.darcy@druid.net> (raw)
In-Reply-To: <20050818143622.32448.qmail@web51910.mail.yahoo.com>
References: <20050818143622.32448.qmail@web51910.mail.yahoo.com>
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: darcy@druid.net, roger77_lb@yahoo.com
Subject: Re: A Table's Primary Key Listing
In-Reply-To: <20050818121844.33a09ad2.darcy@druid.net>
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