Jim,
> I know there were discussions in the past, though as per usual I can't
> find them in the archives.
Search on "B-Tree Organized Tables".
From what I can find, this feature isn't prohibitively useless. It's just a
singnificant amount of effort for a result which is a tradeoff. That is,
you'd *only* want to use it on tables which are *always* accessed by their
primary key.
What stopped the features AFAICT is that the interested parties weren't up to
doing the code.
--
Josh Berkus
PostgreSQL @ Sun
San Francisco