Date: Sat, 6 Mar 2010 18:17:05 +0100
From: Andreas Kretschmer <akretschmer@spamfence.net>
To: pgsql-sql@postgresql.org
Subject: Re: Drop all constraints
Message-ID: <20100306171705.GA31228@tux>
References: <4B928400.1070709@gmail.com>
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Gianvito Pio <pio.gianvito@gmail.com> wrote:

> Hi all,
> is there a way to drop all constraints of a table?
>
> I found this workaround in the manual:
>
> CREATE TABLE temp AS SELECT * FROM distributors;
> DROP TABLE distributors;
> CREATE TABLE distributors AS SELECT * FROM temp;
> DROP TABLE temp;

I think, you can change the table-name from temp to distributors:
(alter table temp rename to distributors), it's cheaper.

>
> Is there any other way to do it?

Maybe. I think you can walk through the system catalogs to find all
constraints for a table and drop them (alter table foo drop constraint
...). I think, you should start with
http://www.postgresql.org/docs/8.4/interactive/catalog-pg-constraint.html


Andreas
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