| From: | Tomas Vondra <tomas(dot)vondra(at)postgresql(dot)org> |
|---|---|
| To: | pgsql-committers(at)lists(dot)postgresql(dot)org |
| Subject: | pgsql: Improve find_em_expr_usable_for_sorting_rel comment |
| Date: | 2020-12-22 01:02:44 |
| Message-ID: | E1krW4a-0000P0-Bz@gemulon.postgresql.org |
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| Lists: | pgsql-committers |
Improve find_em_expr_usable_for_sorting_rel comment
Clarify the relationship between find_em_expr_usable_for_sorting_rel and
prepare_sort_from_pathkeys, i.e. what restrictions need to be shared
between those two places.
Author: James Coleman
Reviewed-by: Tomas Vondra
Backpatch-through: 13
Discussion: https://postgr.es/m/CAAaqYe8cK3g5CfLC4w7bs%3DhC0mSksZC%3DH5M8LSchj5e5OxpTAg%40mail.gmail.com
Branch
------
master
Details
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https://git.postgresql.org/pg/commitdiff/1ca2eb103113d64930cf1120ba2beaaebd1076f4
Modified Files
--------------
src/backend/optimizer/path/equivclass.c | 8 +++++---
src/backend/optimizer/plan/createplan.c | 3 +++
2 files changed, 8 insertions(+), 3 deletions(-)
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