"David E. Wheeler" <da...@kineticode.com> writes:
> I like it, but what do you do when a TZ has been renamed or has ceased
> to exist.

As far as that goes, I think "nothing" is a sufficient answer.  There's
no requirement that an OID in the mapping table correspond to a live TZ.
It's just a more compact way of storing a string name.

                        regards, tom lane

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