Oracle-L: RE: Changing column format

From: Burton, Laura L. <BurtonL_at_prismplus.com>
Date: Thu, 07 Nov 2002 12:59:30 -0800
Message-ID: <F001.004FE4B8.20021107125930@fatcity.com>

Backup Table
ALTER TABLE user DROP PRIMARY KEY CASCADE; This will drop the constraint and delete all foreign key relationships to userid.
ALTER TABLE user ADD CONSTRAINT username_pk PRIMARY KEY (username) USING INDEX TABLESPACE USER_INDEX; This will create a new primary key constraint on username IF the username field is unique and does not contain nulls. The second line is optional.

Laura

-----Original Message-----
Sent: Thursday, November 07, 2002 2:34 PM To: Multiple recipients of list ORACLE-L

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
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Author: Nguyen, David M
INET: david.m.nguyen_at_xo.com

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Author: Burton, Laura L.
INET: BurtonL_at_prismplus.com

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