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From: Christoph Haller <ch@rodos.fzk.de>
Message-Id: <200311110858.JAA18912@rodos>
Subject: Re: How to know column constraints via system catalog tables
To: so_excited@excite.com (Damon)
Date: Tue, 11 Nov 2003 9:58:51 MET
Cc: pgsql-sql@postgresql.org
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	from "Damon" at Nov 8, 103 9:47 pm
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> 
> Hi,
> 
> I need to query each column's constraint and name of a table in
> postgreSQL v7.3.4 with a single SQL query but don't know how. Would
> appreciate any pointers!
> 
> Thank you.
> 
> Regards,
> Damon
> 
select relname,conname 
from pg_constraint,pg_class 
where pg_class.oid=conrelid ;

could be start. 

Regards, Christoph