Nikita Malakhov <hukutoc(at)gmail(dot)com> writes:
Helll Nikita,
> Hi hackers!
>
> Sorry, I've forgot to attach the patch itself. Please check it out.
Could you check if [1] is related to this subject? I think the hard part
would be which tuple_fraction to use during adding
add_paths_to_append_rel since root->tuple_fraction is on subquery level,
while the add_paths_to_append_rel is only on RelOptInfo level.
[1]
https://www.postgresql.org/message-id/CAApHDvry0nSV62kAOH3iccvfPhGPLN0Q97%2B%3Db1RsDPXDz3%3DCiQ%40mail.gmail.com
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Best Regards
Andy Fan