Nikita Malakhov <huku...@gmail.com> writes: > Hi, > > Andy, your words make sense, but to me it seems that in > add_paths_to_append_rel > we have no other options than tuple_fraction from root, and rows (if any) in > paths > we take into account, please correct me if I am wrong.
One of the option might be applying your logic only if we can prove the tuple_fraction from root is same as the tuple_fraction, similar with what I did before. But it is proved that is too complex. > Thank you! > > Also, on top of that I have an idea of pruning unnecessary partitions > in generate_orderedappend_paths() when we have a valid LIMIT value. > I'm currently checking if it is working correctly in multiple cases, > so 'll send it after we deal with this issue. -- Best Regards Andy Fan
