On Thu, Dec 12, 2019 at 6:32 PM Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Thomas Munro <thomas.munro@gmail.com> writes:
> > Erm, but I shouldn't have to reindex my hash indexes (at least not
> > until someone invents collation-based equality and therefore
> > necessarily also collation-based hashing). How can we exclude that?
>
> Um, we already invented that with nondeterministic collations, no?
Urghlgh, right, thanks, somehow I missed/forgot that that stuff
already works for hashing (neat). So we do need to track collation
version dependencies for hash indexes, but only for non-deterministic
collations. I wonder how best to code that.