diff options
Diffstat (limited to 'src/include/optimizer/paths.h')
| -rw-r--r-- | src/include/optimizer/paths.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/include/optimizer/paths.h b/src/include/optimizer/paths.h index 0c3a0b90c85..2ffa24aa899 100644 --- a/src/include/optimizer/paths.h +++ b/src/include/optimizer/paths.h @@ -24,6 +24,7 @@ extern PGDLLIMPORT bool enable_geqo; extern PGDLLIMPORT int geqo_threshold; extern PGDLLIMPORT int min_parallel_table_scan_size; extern PGDLLIMPORT int min_parallel_index_scan_size; +extern PGDLLIMPORT bool enable_group_by_reordering; /* Hook for plugins to get control in set_rel_pathlist() */ typedef void (*set_rel_pathlist_hook_type) (PlannerInfo *root, @@ -203,6 +204,12 @@ typedef enum extern PathKeysComparison compare_pathkeys(List *keys1, List *keys2); extern bool pathkeys_contained_in(List *keys1, List *keys2); extern bool pathkeys_count_contained_in(List *keys1, List *keys2, int *n_common); +extern int group_keys_reorder_by_pathkeys(List *pathkeys, + List **group_pathkeys, + List **group_clauses); +extern List *get_useful_group_keys_orderings(PlannerInfo *root, double nrows, + List *path_pathkeys, + List *pathkeys, List *clauses); extern Path *get_cheapest_path_for_pathkeys(List *paths, List *pathkeys, Relids required_outer, CostSelector cost_criterion, |