BookerT wrote:
> I am a novice user, but expected to do "Advanced things"

Others have given you good advice.

With respect to your "Subject", above, altering DUAL is one way
to be quickly escorted to the door with a pink slip of paper
explaining how to find the unemployment office.
--
Daniel A. Morgan
University of Washington
damorgan@x.washington.edu
(replace x with u to respond)
Puget Sound Oracle Users Group
www.psoug.org