"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: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
