Tom,
> I'd much rather expect the extension author to explicitly support each
> pair of (from, to) version numbers that he's prepared to deal with.
> If he can build those update scripts as simple concatenations of
> single-step scripts, great; but let's not hard-wire the assumption that
> that approach MUST work.
That's an n^2 problem.
However, I don't see any obvious way to avoid it.
We would want to support some wildcarding, though, just to avoid having
1,000 version-to-version files in every extension when a lot of the
upgrade actions might be generic. Of course, in order to do
wildcarding, we need to mandate a version numbering system ...
--
-- Josh Berkus
PostgreSQL Experts Inc.
http://www.pgexperts.com
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