Re: Changing column format

"Nguyen, David M" wrote:
>
> I create a table to store user account information and set "userid" column
> to be primary key. I now want to set "username" to be primary key instead
> of "userid", how do I change it? There are couple hundreds of records in
> table. Please advise.
>
> Thanks,
> David

David,

   Are you sure that you want username to be primary key, instead of unique (and possibly not null) ? IMHO a userid is a better potential PK than a username. If you already have tables referencing this one, it would be better to create a unique constraint on username - BTW you can define a FK on a unique constraint.

-- 
Regards,

Stephane Faroult
Oriole Software
-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Stephane Faroult
  INET: sfaroult_at_oriole.com

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