Re: BUG #14210: filter by "=" constraint doesn't work when hash index is present on a column

On Thu, Jun 23, 2016 at 4:08 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> So the answer is that this got broken by commit 9f03ca915196dfc8,
> which appears to have imagined that _hash_form_tuple() is just an
> alias for index_form_tuple().  But it ain't.

Can we add test coverage that will detect when comparetup_index_hash()
gives wrong answers, please? It's been broken at least 2 times, that
I'm aware of. I'll write a patch, if that helps.

--
Peter Geoghegan