On Wed, Sep 12, 2018 at 01:06:12PM +1200, Thomas Munro wrote:
> The ideal scope would be to track all referenced collation versions on
> every index, and only update them at CREATE INDEX or REINDEX time
> (also, as discussed in some other thread, CHECK constraints and
> partition keys might be invalidated and should in theory also carry
> versions that can only be updated by running a hypothetical RECHECK or
> REPARTITION command). Then a shared pg_collation catalog would make
> perfect sense, and there would be no need for it to have a collversion
> column at all, or an ALTER COLLATION ... REFRESH VERSION command, and
> therefore there would be no way to screw it up by REFRESHing the
> VERSION without having really fixed the problem.
Please note that the latest patch set does not apply, so this has been
switched to commit fest 2018-11, waiting on author for a rebase.
--
Michael
