Re: Fix CPU cost of right-semi and right-anti hash joins

[Richard Guo]

On Mon, Aug 17, 2026 at 12:58 PM wenhui qiu <qiuwenhu...@gmail.com> wrote:
>> The cpu_tuple_cost change looks right: RIGHT_SEMI/RIGHT_ANTI emit
>> inner-side rows, while hashjointuples is based on the tuples processed
>> by the hash join and can be much larger. The path LGTM

Thanks for the review.

Regarding back-patching, this fix can change plans, and plan changes
in a minor release are a problem for users.  But maybe we can still
push it to v19?

- Richard