On 3/2/18 11:44 AM, Robert Haas wrote:
> On Fri, Mar 2, 2018 at 11:12 AM, Alexander Kuzmenkov
> <a.kuzmenkov@postgrespro.ru> wrote:
>> On 16.01.2018 10:49, Jeff Davis wrote:
>>> My proposed fix is to make an internal opfamily identical to the
>>> external one, such that it's not recognized as part of the same EC,
>>> and the planner won't try to eliminate it. It loses out on potential
>>> optimizations, but those are mostly theoretical since the btree
>>> opclass ordering for ranges is not very interesting to a user.
>>
>> I think I figured out what to do with missing sort directions. We can change
>> select_outer_pathkeys_for_merge() to generate the pathkeys we need. Also,
>> find_mergeclauses_for_outer_pathkeys() has to be changed too, so that it
>> knows which pathkeys are compatible to which range join clauses.
>>
>> About the patch, do I understand it right that you are working on the next
>> version now?
>
> I think we are quite clearly past the deadline to submit a new patch
> for inclusion in v11 at this point.
It seems that a new patch is needed here but none has been presented.
I've marked this Waiting on Author for the moment, but I really think it
should be marked Returned with Feedback and submitted to the next CF
when a new patch is ready.
Regards,
--
-David
david@pgmasters.net
