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Don't pass the grouping target around unnecessarily.

Browse Source 
Since commit 4f15e5d09de276fb77326be5567dd9796008ca2e made grouped_rel
set reltarget, a variety of other functions can just get it from
grouped_rel instead of having to pass it around explicitly.  Simplify
accordingly.

Patch by me, reviewed by Ashutosh Bapat.

Discussion: http://postgr.es/m/CA+TgmoZ+ZJTVad-=vEq393N99KTooxv9k7M+z73qnTAqkb49BQ@mail.gmail.com
This commit is contained in:
Robert Haas 2018-03-20 11:33:44 -04:00
parent b6cbe9ea1a
commit 94150513ec
3 changed files with 17 additions and 30 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

41
src/backend/optimizer/plan/planner.c
View File

@ -163,10 +163,10 @@ static RelOptInfo *create_grouping_paths(PlannerInfo *root,
static bool is_degenerate_grouping(PlannerInfo *root);
static void create_degenerate_grouping_paths(PlannerInfo *root,
RelOptInfo *input_rel,
PathTarget *target, RelOptInfo *grouped_rel);
RelOptInfo *grouped_rel);
static void create_ordinary_grouping_paths(PlannerInfo *root,
RelOptInfo *input_rel,
PathTarget *target, RelOptInfo *grouped_rel,
RelOptInfo *grouped_rel,
const AggClauseCosts *agg_costs,
grouping_sets_data *gd, int flags);
static void consider_groupingsets_paths(PlannerInfo *root,
@ -174,7 +174,6 @@ static void consider_groupingsets_paths(PlannerInfo *root,
Path *path,
bool is_sorted,
bool can_hash,
PathTarget *target,
grouping_sets_data *gd,
const AggClauseCosts *agg_costs,
double dNumGroups);
@ -220,7 +219,6 @@ static void adjust_paths_for_srfs(PlannerInfo *root, RelOptInfo *rel,
List *targets, List *targets_contain_srfs);
static void add_paths_to_grouping_rel(PlannerInfo *root, RelOptInfo *input_rel,
RelOptInfo *grouped_rel,
PathTarget *target,
RelOptInfo *partially_grouped_rel,
const AggClauseCosts *agg_costs,
const AggClauseCosts *agg_final_costs,
@ -3737,7 +3735,7 @@ create_grouping_paths(PlannerInfo *root,
* grouping, as appropriate.
*/
if (is_degenerate_grouping(root))
create_degenerate_grouping_paths(root, input_rel, target, grouped_rel);
create_degenerate_grouping_paths(root, input_rel, grouped_rel);
else
{
int flags = 0;
@ -3788,7 +3786,7 @@ create_grouping_paths(PlannerInfo *root,
if (can_partial_agg(root, agg_costs))
flags |= GROUPING_CAN_PARTIAL_AGG;
create_ordinary_grouping_paths(root, input_rel, target, grouped_rel,
create_ordinary_grouping_paths(root, input_rel, grouped_rel,
agg_costs, gd, flags);
}
@ -3826,7 +3824,7 @@ is_degenerate_grouping(PlannerInfo *root)
*/
static void
create_degenerate_grouping_paths(PlannerInfo *root, RelOptInfo *input_rel,
PathTarget *target, RelOptInfo *grouped_rel)
RelOptInfo *grouped_rel)
{
Query *parse = root->parse;
int nrows;
@ -3848,7 +3846,7 @@ create_degenerate_grouping_paths(PlannerInfo *root, RelOptInfo *input_rel,
{
path = (Path *)
create_result_path(root, grouped_rel,
target,
grouped_rel->reltarget,
(List *) parse->havingQual);
paths = lappend(paths, path);
}
@ -3861,14 +3859,13 @@ create_degenerate_grouping_paths(PlannerInfo *root, RelOptInfo *input_rel,
false,
NIL,
-1);
path->pathtarget = target;
}
else
{
/* No grouping sets, or just one, so one output row */
path = (Path *)
create_result_path(root, grouped_rel,
target,
grouped_rel->reltarget,
(List *) parse->havingQual);
}
@ -3887,7 +3884,7 @@ create_degenerate_grouping_paths(PlannerInfo *root, RelOptInfo *input_rel,
*/
static void
create_ordinary_grouping_paths(PlannerInfo *root, RelOptInfo *input_rel,
PathTarget *target, RelOptInfo *grouped_rel,
RelOptInfo *grouped_rel,
const AggClauseCosts *agg_costs,
grouping_sets_data *gd, int flags)
{
@ -3929,7 +3926,7 @@ create_ordinary_grouping_paths(PlannerInfo *root, RelOptInfo *input_rel,
}
/* Build final grouping paths */
add_paths_to_grouping_rel(root, input_rel, grouped_rel, target,
add_paths_to_grouping_rel(root, input_rel, grouped_rel,
partially_grouped_rel, agg_costs,
&agg_final_costs, gd, can_sort, can_hash,
dNumGroups, (List *) parse->havingQual);
@ -3968,7 +3965,6 @@ consider_groupingsets_paths(PlannerInfo *root,
Path *path,
bool is_sorted,
bool can_hash,
PathTarget *target,
grouping_sets_data *gd,
const AggClauseCosts *agg_costs,
double dNumGroups)
@ -4110,7 +4106,6 @@ consider_groupingsets_paths(PlannerInfo *root,
create_groupingsets_path(root,
grouped_rel,
path,
target,
(List *) parse->havingQual,
strat,
new_rollups,
@ -4268,7 +4263,6 @@ consider_groupingsets_paths(PlannerInfo *root,
create_groupingsets_path(root,
grouped_rel,
path,
target,
(List *) parse->havingQual,
AGG_MIXED,
rollups,
@ -4285,7 +4279,6 @@ consider_groupingsets_paths(PlannerInfo *root,
create_groupingsets_path(root,
grouped_rel,
path,
target,
(List *) parse->havingQual,
AGG_SORTED,
gd->rollups,
@ -6087,7 +6080,6 @@ get_partitioned_child_rels_for_join(PlannerInfo *root, Relids join_relids)
static void
add_paths_to_grouping_rel(PlannerInfo *root, RelOptInfo *input_rel,
RelOptInfo *grouped_rel,
PathTarget *target,
RelOptInfo *partially_grouped_rel,
const AggClauseCosts *agg_costs,
const AggClauseCosts *agg_final_costs,
@ -6125,7 +6117,7 @@ add_paths_to_grouping_rel(PlannerInfo *root, RelOptInfo *input_rel,
if (parse->groupingSets)
{
consider_groupingsets_paths(root, grouped_rel,
path, true, can_hash, target,
path, true, can_hash,
gd, agg_costs, dNumGroups);
}
else if (parse->hasAggs)
@ -6138,7 +6130,7 @@ add_paths_to_grouping_rel(PlannerInfo *root, RelOptInfo *input_rel,
create_agg_path(root,
grouped_rel,
path,
target,
grouped_rel->reltarget,
parse->groupClause ? AGG_SORTED : AGG_PLAIN,
AGGSPLIT_SIMPLE,
parse->groupClause,
@ -6156,7 +6148,6 @@ add_paths_to_grouping_rel(PlannerInfo *root, RelOptInfo *input_rel,
create_group_path(root,
grouped_rel,
path,
target,
parse->groupClause,
havingQual,
dNumGroups));
@ -6199,7 +6190,7 @@ add_paths_to_grouping_rel(PlannerInfo *root, RelOptInfo *input_rel,
create_agg_path(root,
grouped_rel,
path,
target,
grouped_rel->reltarget,
parse->groupClause ? AGG_SORTED : AGG_PLAIN,
AGGSPLIT_FINAL_DESERIAL,
parse->groupClause,
@ -6211,7 +6202,6 @@ add_paths_to_grouping_rel(PlannerInfo *root, RelOptInfo *input_rel,
create_group_path(root,
grouped_rel,
path,
target,
parse->groupClause,
havingQual,
dNumGroups));
@ -6229,7 +6219,7 @@ add_paths_to_grouping_rel(PlannerInfo *root, RelOptInfo *input_rel,
* Try for a hash-only groupingsets path over unsorted input.
*/
consider_groupingsets_paths(root, grouped_rel,
cheapest_path, false, true, target,
cheapest_path, false, true,
gd, agg_costs, dNumGroups);
}
else
@ -6254,7 +6244,7 @@ add_paths_to_grouping_rel(PlannerInfo *root, RelOptInfo *input_rel,
add_path(grouped_rel, (Path *)
create_agg_path(root, grouped_rel,
cheapest_path,
target,
grouped_rel->reltarget,
AGG_HASHED,
AGGSPLIT_SIMPLE,
parse->groupClause,
@ -6282,7 +6272,7 @@ add_paths_to_grouping_rel(PlannerInfo *root, RelOptInfo *input_rel,
create_agg_path(root,
grouped_rel,
path,
target,
grouped_rel->reltarget,
AGG_HASHED,
AGGSPLIT_FINAL_DESERIAL,
parse->groupClause,
@ -6420,7 +6410,6 @@ create_partial_grouping_paths(PlannerInfo *root,
create_group_path(root,
partially_grouped_rel,
path,
partially_grouped_rel->reltarget,
parse->groupClause,
NIL,
dNumPartialGroups));

4
src/backend/optimizer/util/pathnode.c
View File

@ -2651,12 +2651,12 @@ GroupPath *
create_group_path(PlannerInfo *root,
RelOptInfo *rel,
Path *subpath,
PathTarget *target,
List *groupClause,
List *qual,
double numGroups)
{
GroupPath *pathnode = makeNode(GroupPath);
PathTarget *target = rel->reltarget;
pathnode->path.pathtype = T_Group;
pathnode->path.parent = rel;
@ -2828,7 +2828,6 @@ GroupingSetsPath *
create_groupingsets_path(PlannerInfo *root,
RelOptInfo *rel,
Path *subpath,
PathTarget *target,
List *having_qual,
AggStrategy aggstrategy,
List *rollups,
@ -2836,6 +2835,7 @@ create_groupingsets_path(PlannerInfo *root,
double numGroups)
{
GroupingSetsPath *pathnode = makeNode(GroupingSetsPath);
PathTarget *target = rel->reltarget;
ListCell *lc;
bool is_first = true;
bool is_first_sort = true;

2
src/include/optimizer/pathnode.h
View File

@ -178,7 +178,6 @@ extern SortPath *create_sort_path(PlannerInfo *root,
extern GroupPath *create_group_path(PlannerInfo *root,
RelOptInfo *rel,
Path *subpath,
PathTarget *target,
List *groupClause,
List *qual,
double numGroups);
@ -200,7 +199,6 @@ extern AggPath *create_agg_path(PlannerInfo *root,
extern GroupingSetsPath *create_groupingsets_path(PlannerInfo *root,
RelOptInfo *rel,
Path *subpath,
PathTarget *target,
List *having_qual,
AggStrategy aggstrategy,
List *rollups,