From: Bruce Momjian <bruce@momjian.us>
Date: Fri, 29 Sep 2023 18:25:59 +0000 (-0400)
Subject: C comment: add optimizer function reference
X-Git-Tag: REL_17_BETA1~1784
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=6d0c39a29309e5d7a6398e213190ae4f031061ab;p=thirdparty%2Fpostgresql.git

C comment: add optimizer function reference

Reported-by: James Coleman

Discussion: https://postgr.es/m/CAAaqYe9F6uoMhAr+8rMLwvGzaKaSknPA0Wi3Ehtv8pbSYmJq-Q@mail.gmail.com

Backpatch-through: master
---

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index f75e0f99cb9..b11b9399891 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -3473,7 +3473,8 @@ standard_join_search(PlannerInfo *root, int levels_needed, List *initial_rels)
 			/*
 			 * Except for the topmost scan/join rel, consider gathering
 			 * partial paths.  We'll do the same for the topmost scan/join rel
-			 * once we know the final targetlist (see grouping_planner).
+			 * once we know the final targetlist (see grouping_planner's and
+			 * its call to apply_scanjoin_target_to_paths).
 			 */
 			if (!bms_equal(rel->relids, root->all_query_rels))
 				generate_useful_gather_paths(root, rel, false);