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Rename PathKeyInfo to GroupByOrdering

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0452b461bc made optimizer explore alternative orderings of group-by pathkeys.
The PathKeyInfo data structure was used to store the particular ordering of
group-by pathkeys and corresponding clauses.  It turns out that PathKeyInfo
is not the best name for that purpose.  This commit renames this data structure
to GroupByOrdering, and revises its comment.

Discussion: https://postgr.es/m/db0fc3a4-966c-4cec-a136-94024d39212d%40postgrespro.ru
Reported-by: Tom Lane
Author: Andrei Lepikhov
Reviewed-by: Alexander Korotkov, Pavel Borisov
This commit is contained in:
Alexander Korotkov
2024-06-06 13:43:24 +03:00
parent 91143c03d4
commit 0c1af2c35c
4 changed files with 24 additions and 17 deletions
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8
src/backend/optimizer/plan/planner.c
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@@ -6917,7 +6917,7 @@ add_paths_to_grouping_rel(PlannerInfo *root, RelOptInfo *input_rel,
foreach(lc2, pathkey_orderings)
{
PathKeyInfo *info = (PathKeyInfo *) lfirst(lc2);
GroupByOrdering *info = (GroupByOrdering *) lfirst(lc2);
/* restore the path (we replace it in the loop) */
path = path_save;
@@ -6998,7 +6998,7 @@ add_paths_to_grouping_rel(PlannerInfo *root, RelOptInfo *input_rel,
/* process all potentially interesting grouping reorderings */
foreach(lc2, pathkey_orderings)
{
PathKeyInfo *info = (PathKeyInfo *) lfirst(lc2);
GroupByOrdering *info = (GroupByOrdering *) lfirst(lc2);
/* restore the path (we replace it in the loop) */
path = path_save;
@@ -7249,7 +7249,7 @@ create_partial_grouping_paths(PlannerInfo *root,
/* process all potentially interesting grouping reorderings */
foreach(lc2, pathkey_orderings)
{
PathKeyInfo *info = (PathKeyInfo *) lfirst(lc2);
GroupByOrdering *info = (GroupByOrdering *) lfirst(lc2);
/* restore the path (we replace it in the loop) */
path = path_save;
@@ -7305,7 +7305,7 @@ create_partial_grouping_paths(PlannerInfo *root,
/* process all potentially interesting grouping reorderings */
foreach(lc2, pathkey_orderings)
{
PathKeyInfo *info = (PathKeyInfo *) lfirst(lc2);
GroupByOrdering *info = (GroupByOrdering *) lfirst(lc2);
/* restore the path (we replace it in the loop) */