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C comment: add optimizer function reference

2023年9月29日 18:25:59 +0000 (14:25 -0400)

committer Bruce Momjian <bruce@momjian.us>

2023年9月29日 18:25:59 +0000 (14:25 -0400)

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

Backpatch-through: master

src/backend/optimizer/path/allpaths.c patch | blob | blame | history

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c

index f75e0f99cb9c382980b8728cbbe6278cc271b5e5..b11b9399891098f0fd82486d85f90347da2a9afd 100644 (file)

--- 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);

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