No the unique constraint is not necessary because a primary key by
definition should be able to be used to uniquly define a row tuple
whatever it is called
Darren Ferguson
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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