David Rowley writes:
> On Mon, 5 Oct 2020 at 06:29, Tom Lane wrote:
>> I'm unsure whether to back-patch either of these. They both seem to be
>> just latent bugs so far as the core code is concerned, but the first one
>> in particular seems like something that could bite extension code.
>> Thoug
On Mon, 5 Oct 2020 at 06:29, Tom Lane wrote:
>
> While hacking on a patch that touches equivclass.c, I came across
> a couple of things that seemed wrong, and are fixed by the attached
> proposed patch.
>
> First, get_eclass_for_sort_expr() computes expr_relids and nullable_relids
> too soon. Thi
While hacking on a patch that touches equivclass.c, I came across
a couple of things that seemed wrong, and are fixed by the attached
proposed patch.
First, get_eclass_for_sort_expr() computes expr_relids and nullable_relids
too soon. This is a waste of a not-really-trivial number of cycles in
th
