Re: extensible enum types

Tom Lane wrote:
> Bruce Momjian <bruce@momjian.us> writes:
> > Sorry to be commenting late, but don't most people want to add to the
> > end or beginning of the enum list, rather than in the middle, and can't
> > we support that already?
> 
> We could allow adding a value, but we couldn't guarantee where it would
> appear in the type's sort ordering.  Depending on the current OID
> counter it would usually show up either at the end or the beginning.
> I think the general feeling is that this is too implementation-dependent
> to be acceptable.

Well, we don't need the enum value to map into the entire oid range. 
Can't we just add one to the top-most value and see if there is a
conflict?

--  Bruce Momjian  <bruce@momjian.us>        http://momjian.us EnterpriseDB
http://enterprisedb.com
 + None of us is going to be here forever. +