Tom Lane wrote:
> Robert Haas <robertmhaas@gmail.com> writes:
> > I think we should break up internal into various kinds of internal
> > depending on what kind of a thing we've actually got a pointer to.
>
> Not a bad long-term project, but it's not happening in this cycle.
> I'm not very sure how we'd go about it anyway --- for examples
> like this, every new user-defined aggregate potentially wants its
> own flavor of "internal", so how do we manage that?
Can't we have them be ExtensibleNode?
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