Re: Short-circuit sort_inner_and_outer if there are no mergejoin clauses - Mailing list pgsql-hackers

On Fri, Apr 26, 2024 at 2:57 PM Richard Guo <guofenglinux@gmail.com> wrote:
> I doubt that there is measurable performance improvement.  But I found
> that throughout the run of the regression tests, sort_inner_and_outer is
> called a total of 44,424 times.  Among these calls, there are 11,064
> instances where mergeclause_list is found to be empty.  This accounts
> for ~1/4.  I think maybe this suggests that it's worth the shortcut as
> the patch does.

Pushed.

Thanks
Richard