Rename enable_incrementalsort for clarity
authorPeter Eisentraut <peter@eisentraut.org>
Sun, 5 Jul 2020 09:41:52 +0000 (11:41 +0200)
committerPeter Eisentraut <peter@eisentraut.org>
Sun, 5 Jul 2020 09:43:08 +0000 (11:43 +0200)
Author: James Coleman <jtc331@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/df652910-e985-9547-152c-9d4357dc3979%402ndquadrant.com

12 files changed:
doc/src/sgml/config.sgml
src/backend/optimizer/path/allpaths.c
src/backend/optimizer/path/costsize.c
src/backend/optimizer/plan/planner.c
src/backend/utils/misc/guc.c
src/backend/utils/misc/postgresql.conf.sample
src/include/optimizer/cost.h
src/test/regress/expected/incremental_sort.out
src/test/regress/expected/partition_aggregate.out
src/test/regress/expected/sysviews.out
src/test/regress/sql/incremental_sort.sql
src/test/regress/sql/partition_aggregate.sql

index b81aab239f3fcddfd0e8af767349d15ebb1d2cb5..02909b1e664790b7b0872a08729df06ce9b91e02 100644 (file)
@@ -4574,10 +4574,10 @@ ANY <replaceable class="parameter">num_sync</replaceable> ( <replaceable class="
       </listitem>
      </varlistentry>
 
-     <varlistentry id="guc-enable-incrementalsort" xreflabel="enable_incrementalsort">
-      <term><varname>enable_incrementalsort</varname> (<type>boolean</type>)
+     <varlistentry id="guc-enable-incremental-sort" xreflabel="enable_incremental_sort">
+      <term><varname>enable_incremental_sort</varname> (<type>boolean</type>)
       <indexterm>
-       <primary><varname>enable_incrementalsort</varname> configuration parameter</primary>
+       <primary><varname>enable_incremental_sort</varname> configuration parameter</primary>
       </indexterm>
       </term>
       <listitem>
index 63761d559381606261914babcf90fc038dd7fbdc..c4e1967f1231b4ddf64b73f3a347c705cb80ba4c 100644 (file)
@@ -2915,7 +2915,7 @@ generate_useful_gather_paths(PlannerInfo *root, RelOptInfo *rel, bool override_r
                         * Consider incremental sort, but only when the subpath is already
                         * partially sorted on a pathkey prefix.
                         */
-                       if (enable_incrementalsort && presorted_keys > 0)
+                       if (enable_incremental_sort && presorted_keys > 0)
                        {
                                Path       *tmp;
 
index 4ff3c7a2fd38ad3a1744ee434a54f2cdf4290a5e..87c9b49ce147a1fd92b3bbff16bfdd747f1e1acb 100644 (file)
@@ -128,7 +128,7 @@ bool                enable_indexonlyscan = true;
 bool           enable_bitmapscan = true;
 bool           enable_tidscan = true;
 bool           enable_sort = true;
-bool           enable_incrementalsort = true;
+bool           enable_incremental_sort = true;
 bool           enable_hashagg = true;
 bool           hashagg_avoid_disk_plan = true;
 bool           enable_nestloop = true;
index 4131019fc98536e963667ab5bcba17b49c9b0241..14f3fd44e3615320fbb64c7dfe59cf9f7729541e 100644 (file)
@@ -5014,7 +5014,7 @@ create_ordered_paths(PlannerInfo *root,
                         * presorted the path is. Additionally incremental sort may enable
                         * a cheaper startup path to win out despite higher total cost.
                         */
-                       if (!enable_incrementalsort)
+                       if (!enable_incremental_sort)
                                continue;
 
                        /* Likewise, if the path can't be used for incremental sort. */
@@ -5095,7 +5095,7 @@ create_ordered_paths(PlannerInfo *root,
                 * sort_pathkeys because then we can't possibly have a presorted
                 * prefix of the list without having the list be fully sorted.
                 */
-               if (enable_incrementalsort && list_length(root->sort_pathkeys) > 1)
+               if (enable_incremental_sort && list_length(root->sort_pathkeys) > 1)
                {
                        ListCell   *lc;
 
@@ -6572,7 +6572,7 @@ add_paths_to_grouping_rel(PlannerInfo *root, RelOptInfo *input_rel,
                         * when the path is not already sorted and when incremental sort
                         * is enabled.
                         */
-                       if (is_sorted || !enable_incrementalsort)
+                       if (is_sorted || !enable_incremental_sort)
                                continue;
 
                        /* Restore the input path (we might have added Sort on top). */
@@ -6699,7 +6699,7 @@ add_paths_to_grouping_rel(PlannerInfo *root, RelOptInfo *input_rel,
                                 * when the path is not already sorted and when incremental
                                 * sort is enabled.
                                 */
-                               if (is_sorted || !enable_incrementalsort)
+                               if (is_sorted || !enable_incremental_sort)
                                        continue;
 
                                /* Restore the input path (we might have added Sort on top). */
@@ -7022,7 +7022,7 @@ create_partial_grouping_paths(PlannerInfo *root,
                 * group_pathkeys because then we can't possibly have a presorted
                 * prefix of the list without having the list be fully sorted.
                 */
-               if (enable_incrementalsort && list_length(root->group_pathkeys) > 1)
+               if (enable_incremental_sort && list_length(root->group_pathkeys) > 1)
                {
                        foreach(lc, input_rel->pathlist)
                        {
@@ -7125,7 +7125,7 @@ create_partial_grouping_paths(PlannerInfo *root,
                         * when the path is not already sorted and when incremental sort
                         * is enabled.
                         */
-                       if (is_sorted || !enable_incrementalsort)
+                       if (is_sorted || !enable_incremental_sort)
                                continue;
 
                        /* Restore the input path (we might have added Sort on top). */
@@ -7304,7 +7304,7 @@ gather_grouping_paths(PlannerInfo *root, RelOptInfo *rel)
         * group_pathkeys because then we can't possibly have a presorted prefix
         * of the list without having the list be fully sorted.
         */
-       if (!enable_incrementalsort || list_length(root->group_pathkeys) == 1)
+       if (!enable_incremental_sort || list_length(root->group_pathkeys) == 1)
                return;
 
        /* also consider incremental sort on partial paths, if enabled */
index 75fc6f11d6a2a842e11e9f4389807c344581964f..3a802d8627dcc50b65cdf1661babe272ccc5db68 100644 (file)
@@ -983,11 +983,11 @@ static struct config_bool ConfigureNamesBool[] =
                NULL, NULL, NULL
        },
        {
-               {"enable_incrementalsort", PGC_USERSET, QUERY_TUNING_METHOD,
+               {"enable_incremental_sort", PGC_USERSET, QUERY_TUNING_METHOD,
                        gettext_noop("Enables the planner's use of incremental sort steps."),
                        NULL
                },
-               &enable_incrementalsort,
+               &enable_incremental_sort,
                true,
                NULL, NULL, NULL
        },
index 3a25287a391d73b0041fa38fda18064d69052eb6..0d98e546a6b4536924981d8d2f01d9faac238d79 100644 (file)
 #enable_parallel_append = on
 #enable_seqscan = on
 #enable_sort = on
-#enable_incrementalsort = on
+#enable_incremental_sort = on
 #enable_tidscan = on
 #enable_partitionwise_join = off
 #enable_partitionwise_aggregate = off
index 92e70ec0d9bf231dfd34d73e2642503d65d0bd90..613db8eab6882d2c1398e3134ef34f53ce8baa82 100644 (file)
@@ -53,7 +53,7 @@ extern PGDLLIMPORT bool enable_indexonlyscan;
 extern PGDLLIMPORT bool enable_bitmapscan;
 extern PGDLLIMPORT bool enable_tidscan;
 extern PGDLLIMPORT bool enable_sort;
-extern PGDLLIMPORT bool enable_incrementalsort;
+extern PGDLLIMPORT bool enable_incremental_sort;
 extern PGDLLIMPORT bool enable_hashagg;
 extern PGDLLIMPORT bool hashagg_avoid_disk_plan;
 extern PGDLLIMPORT bool enable_nestloop;
index 53accd0df97d1d0e493f43f1e92bc8fcf989fddc..e376ea1276171b3f30696d649902443c937cc342 100644 (file)
@@ -1414,7 +1414,7 @@ create table t (a int, b int, c int);
 insert into t select mod(i,10),mod(i,10),i from generate_series(1,10000) s(i);
 create index on t (a);
 analyze t;
-set enable_incrementalsort = off;
+set enable_incremental_sort = off;
 explain (costs off) select a,b,sum(c) from t group by 1,2 order by 1,2,3 limit 1;
                       QUERY PLAN                      
 ------------------------------------------------------
@@ -1430,7 +1430,7 @@ explain (costs off) select a,b,sum(c) from t group by 1,2 order by 1,2,3 limit 1
                            ->  Parallel Seq Scan on t
 (10 rows)
 
-set enable_incrementalsort = on;
+set enable_incremental_sort = on;
 explain (costs off) select a,b,sum(c) from t group by 1,2 order by 1,2,3 limit 1;
                               QUERY PLAN                              
 ----------------------------------------------------------------------
index c36970575f547a44a8b9bd7e8bd7615844fea6d6..45c698daf4895092ea4c81f02490d8725c769d67 100644 (file)
@@ -12,7 +12,7 @@ SET enable_partitionwise_join TO true;
 -- Disable parallel plans.
 SET max_parallel_workers_per_gather TO 0;
 -- Disable incremental sort, which can influence selected plans due to fuzz factor.
-SET enable_incrementalsort TO off;
+SET enable_incremental_sort TO off;
 --
 -- Tests for list partitioned tables.
 --
index 01b7786f01421bbbcc2c6b39232abbf4fe9eea13..06c4c3e47637823c0c794d1969b2b0ce3175b4a9 100644 (file)
@@ -76,7 +76,7 @@ select name, setting from pg_settings where name like 'enable%';
  enable_gathermerge             | on
  enable_hashagg                 | on
  enable_hashjoin                | on
- enable_incrementalsort         | on
+ enable_incremental_sort        | on
  enable_indexonlyscan           | on
  enable_indexscan               | on
  enable_material                | on
index 373e62ac13a19e60f40a8ecabfd448ab49de59f8..9c040c90e62da5c63e5853d2f44ac6248d33f51f 100644 (file)
@@ -210,10 +210,10 @@ insert into t select mod(i,10),mod(i,10),i from generate_series(1,10000) s(i);
 create index on t (a);
 analyze t;
 
-set enable_incrementalsort = off;
+set enable_incremental_sort = off;
 explain (costs off) select a,b,sum(c) from t group by 1,2 order by 1,2,3 limit 1;
 
-set enable_incrementalsort = on;
+set enable_incremental_sort = on;
 explain (costs off) select a,b,sum(c) from t group by 1,2 order by 1,2,3 limit 1;
 
 -- Incremental sort vs. set operations with varno 0
index 178f2079faa552b747c0777dd6eedb003f615e70..117f65ecb4f6a16f3eda1d76c9402485547f4c59 100644 (file)
@@ -13,7 +13,7 @@ SET enable_partitionwise_join TO true;
 -- Disable parallel plans.
 SET max_parallel_workers_per_gather TO 0;
 -- Disable incremental sort, which can influence selected plans due to fuzz factor.
-SET enable_incrementalsort TO off;
+SET enable_incremental_sort TO off;
 
 --
 -- Tests for list partitioned tables.