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C comment: add optimizer function reference
Reported-by: James Coleman Discussion: https://postgr.es/m/CAAaqYe9F6uoMhAr+8rMLwvGzaKaSknPA0Wi3Ehtv8pbSYmJq-Q@mail.gmail.com Backpatch-through: master
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src/backend/optimizer/path/allpaths.c

Lines changed: 2 additions & 1 deletion
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@@ -3473,7 +3473,8 @@ standard_join_search(PlannerInfo *root, int levels_needed, List *initial_rels)
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/*
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* Except for the topmost scan/join rel, consider gathering
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* partial paths. We'll do the same for the topmost scan/join rel
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* once we know the final targetlist (see grouping_planner).
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* once we know the final targetlist (see grouping_planner's and
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* its call to apply_scanjoin_target_to_paths).
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*/
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if (!bms_equal(rel->relids, root->all_query_rels))
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generate_useful_gather_paths(root, rel, false);

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