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Date: Thu, 12 Dec 2002 09:54:25 +0100
From: Tomasz Myrta <jasiek@klaster.net>
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To: Huub <v.niekerk@freeler.nl>
Cc: pgsql-sql@postgresql.org
Subject: Re: primary + foreign key
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Huub wrote:

> Hi,
>
> I want to create a table where the 2 columns are both primary as well as
> foreign key. What is the correct syntax for that?
>
> Thanks
>
> Huub

create table detail
(
   id1 integer,
   id2 integer,
   CONSTRAINT c1 PRIMARY KEY(id1,id2),
   CONSTRAINT c2 FOREIGN KEY(id1,id2) REFERENCES master
);

Do you really need such detail table? You can just add columns to master 
table.

Tomasz Myrta