Primary keys

[Paul]

How is it that even though I have the column "username" in my database set
as a Primary key, using my PHP script to add new users to the database works
without any errors even when signing up using an existing username. I have a
database full of the same usernames!

[Jeff North]

Re: Primary keys

On Sun, 17 Aug 2003 15:39:13 +0000 (UTC), in mailing.databas e.mysql
"Paul" <Paul@here.co m> wrote:
[color=blue]
>| How is it that even though I have the column "username" in my database set
>| as a Primary key, using my PHP script to add new users to the database works
>| without any errors even when signing up using an existing username. I have a
>| database full of the same usernames![/color]

Is there more than one field as the primary key?

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