UNION but with excused columns

Mike Rowan <[email protected]>
Newsgroups gmane.comp.db.postgresql.novice
Message-ID <CAL04MknwVhv9yHE4hdvNoWq_1+YZUKk4HeCxsgw1ztPzXEMS+w@mail.gmail.com> 
I would like to use UNION to amalgamate two result sets, but I need to
excuse some columns (the same columns in each set) from the matching
requirement.  The unmatched columns are the same data type, but not the
same data.

Is this possible, and if so, any clues?

Thanks for any ideas
Mike
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