On Sun, Feb 9, 2014 at 7:37 PM, Alexander Korotkov <aekorotkov@gmail.com> wrote:
> This is not only place that worry me about planning overhead. See
> get_cheapest_fractional_path_for_pathkeys. I had to estimate number of
> groups for each sorting column in order to get right fractional path.
AFAICT this only happens once per plan and the overhead is O(n) to the
number of pathkeys? I can't get worried about that, but I guess it's
better to test anyway.
PS: You didn't answer my questions about splitting the patch. I guess
I'll have to do that anyway to run the tests.
Regards,
Marti