Nikita Malakhov <huku...@gmail.com> writes: Hi Nikita,
> Hi! > > Andy, one quick question - what do you think on using > root->limit_tuples as a guidance on how many > rows we have to consider in plans cost? Within my exprerience, the committer probabaly dislikes the idea of "ignoring the difference of tuple_fraction between subquery level and RelOptInfo level" and the committers dislikes a complex soluation like what I did in [1]. Maybe you can try to figure out completed and simple soluation to make everyone happy, but I have no idea about on this right now. [1] https://www.postgresql.org/message-id/CAApHDvry0nSV62kAOH3iccvfPhGPLN0Q97%2B%3Db1RsDPXDz3%3DCiQ%40mail.gmail.com -- Best Regards Andy Fan