On Thu, Nov 14, 2024 at 6:28 PM Richard Guo <guofengli...@gmail.com> wrote: > 1. We need to teach set_operation_ordered_results_useful() that sorted > input paths are also useful for INTERSECT/EXCEPT, so that we can have > setop_pathkeys set for the subqueries.
BTW, I noticed a typo in the comment for function set_operation_ordered_results_useful(). * set_operation_ordered_results_useful * Return true if the given SetOperationStmt can be executed by utilizing * paths that provide sorted input according to the setop's targetlist. - * Returns false when sorted paths are not any more useful then unsorted + * Returns false when sorted paths are not any more useful than unsorted * ones. Thanks Richard
