From: Russell Simpkins <russellsimpkins@hotmail.com>
To: truthhurts@insightbb.com
To: pgsql-sql@postgresql.org
Subject: Re: Primary and Foreign Key?
Date: Thu, 22 Sep 2005 21:34:11 -0400
Message-ID: <BAY103-F327D058A39D6C120B832E0B5960@phx.gbl> (raw)
In-Reply-To: <KBEKKNMFLELKGIADDEPEMEMICAAA.truthhurts@insightbb.com>
This is valid ddl to accomplish what you wish.
create table peoplegroups {
peopleid int not null,
groupid int not null,
primary key (peopleid, groupid),
foreign key (peopleid) references people,
foreign key (groupid) references group
}
Check the docs for other options etc.
>From: "Announce" <truthhurts@insightbb.com>
>To: "PostgreSQL SQL List" <pgsql-sql@postgresql.org>
>Subject: [SQL] Primary and Foreign Key?
>Date: Thu, 22 Sep 2005 20:13:35 -0500
>
>I have the following related tables:
>
>PEOPLE
>--------------
>peopleid pkey,
>name,
>etc
>
>
>GROUPS
>-------------
>groupid pkey,
>description,
>etc
>
>
>PEOPLEGROUPS
>-------------------
>peopleid pkey/fkey,
>groupid pkey/fkey
>
>
>What is the CORRECT way (in Postgres) to define the PEOPLEGROUPS table so
>that it has both the double primary key AND still acts as a foreign key for
>people.peopleid and groups.groupid? Can i specify both or is this not
>necessary? Any suggestions would be appreciated.
>
>Thanks!
>
>--
>No virus found in this outgoing message.
>Checked by AVG Anti-Virus.
>Version: 7.0.344 / Virus Database: 267.11.4/109 - Release Date: 9/21/2005
>
>
>---------------------------(end of broadcast)---------------------------
>TIP 3: Have you checked our extensive FAQ?
>
> http://www.postgresql.org/docs/faq
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-sql@postgresql.org
Cc: russellsimpkins@hotmail.com, truthhurts@insightbb.com
Subject: Re: Primary and Foreign Key?
In-Reply-To: <BAY103-F327D058A39D6C120B832E0B5960@phx.gbl>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox