David,
First, check the username column to insure that there are no
duplicate entries. If there are, you cannot make it a primary key.
Second, remove the current primary key constraint as there can only
be one primary key constraint per table.
Third, create the new primary key constraint.
Dan Fink
-----Original Message-----
Sent: Thursday, November 07, 2002 1:34 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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