> "Tom" == Tom Lane writes:
>> Of course there is one good solution, which is to have query_planner
>> take a set of acceptable output sort orders rather than just a
>> single one.
>> How wild an idea is this?
Tom> It's been on my to-do list for years, see e.g.
Tom> https://postgr.es/
Andrew Gierth writes:
> So in the grouping sets patch post, I said:
> There is one current weakness which I don't see a good solution for:
> the planner code still has to pick a single value for group_pathkeys
> before planning the input path. This means that we sometimes can't
> choose a minimal
So in the grouping sets patch post, I said:
>> There is one current weakness which I don't see a good solution for:
>> the planner code still has to pick a single value for group_pathkeys
>> before planning the input path. This means that we sometimes can't
>> choose a minimal set of sorts, b
