Re: PRIMARY KEY and UNIQUE - Mailing list pgsql-general

From Darren Ferguson
Subject Re: PRIMARY KEY and UNIQUE
Date
Msg-id Pine.LNX.4.10.10202141028210.3159-100000@thread.crystalballinc.com
Whole thread Raw
In response to PRIMARY KEY and UNIQUE  (Erwin Ambrosch <ambre@ebutec.com>)
Responses Re: PRIMARY KEY and UNIQUE  (Martín Marqués <martin@bugs.unl.edu.ar>)
List pgsql-general
If it is a primary key then it will automatically be UNIQUE.

You do not need the unique next to the VARCHAR in this situation

Darren

On Thu, 14 Feb 2002, Erwin Ambrosch wrote:

> Hi,
>
> I have a such a table.
>
> CREATE TABLE int_article (
>   name          VARCHAR(12) UNIQUE
>   headline      TEXT,
>   summary      TEXT,
>   main            TEXT,
>   footer           TEXT,
>   PRIMARY KEY (name)
> );
>
> Is the UNIQUE constraint neccessary, because if have specified the column
> name to be the primary key.
>
> Thanks in advance
> Erwin
>
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