130 lines
4.9 KiB
C
130 lines
4.9 KiB
C
/*-------------------------------------------------------------------------
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*
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* planmain.h
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* prototypes for various files in optimizer/plan
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*
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*
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* Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* src/include/optimizer/planmain.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef PLANMAIN_H
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#define PLANMAIN_H
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#include "nodes/pathnodes.h"
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#include "nodes/plannodes.h"
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/* GUC parameters */
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#define DEFAULT_CURSOR_TUPLE_FRACTION 0.1
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extern PGDLLIMPORT double cursor_tuple_fraction;
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extern PGDLLIMPORT bool enable_self_join_removal;
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/* query_planner callback to compute query_pathkeys */
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typedef void (*query_pathkeys_callback) (PlannerInfo *root, void *extra);
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/*
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* prototypes for plan/planmain.c
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*/
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extern RelOptInfo *query_planner(PlannerInfo *root,
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query_pathkeys_callback qp_callback, void *qp_extra);
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/*
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* prototypes for plan/planagg.c
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*/
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extern void preprocess_minmax_aggregates(PlannerInfo *root);
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/*
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* prototypes for plan/createplan.c
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*/
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extern Plan *create_plan(PlannerInfo *root, Path *best_path);
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extern ForeignScan *make_foreignscan(List *qptlist, List *qpqual,
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Index scanrelid, List *fdw_exprs, List *fdw_private,
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List *fdw_scan_tlist, List *fdw_recheck_quals,
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Plan *outer_plan);
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extern Plan *change_plan_targetlist(Plan *subplan, List *tlist,
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bool tlist_parallel_safe);
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extern Plan *materialize_finished_plan(Plan *subplan);
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extern bool is_projection_capable_path(Path *path);
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extern bool is_projection_capable_plan(Plan *plan);
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/* External use of these functions is deprecated: */
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extern Sort *make_sort_from_sortclauses(List *sortcls, Plan *lefttree);
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extern Agg *make_agg(List *tlist, List *qual,
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AggStrategy aggstrategy, AggSplit aggsplit,
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int numGroupCols, AttrNumber *grpColIdx, Oid *grpOperators, Oid *grpCollations,
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List *groupingSets, List *chain, double dNumGroups,
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Size transitionSpace, Plan *lefttree);
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extern Limit *make_limit(Plan *lefttree, Node *limitOffset, Node *limitCount,
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LimitOption limitOption, int uniqNumCols,
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AttrNumber *uniqColIdx, Oid *uniqOperators,
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Oid *uniqCollations);
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/*
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* prototypes for plan/initsplan.c
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*/
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extern PGDLLIMPORT int from_collapse_limit;
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extern PGDLLIMPORT int join_collapse_limit;
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extern void add_base_rels_to_query(PlannerInfo *root, Node *jtnode);
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extern void add_other_rels_to_query(PlannerInfo *root);
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extern void build_base_rel_tlists(PlannerInfo *root, List *final_tlist);
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extern void add_vars_to_targetlist(PlannerInfo *root, List *vars,
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Relids where_needed);
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extern void find_lateral_references(PlannerInfo *root);
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extern void create_lateral_join_info(PlannerInfo *root);
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extern List *deconstruct_jointree(PlannerInfo *root);
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extern bool restriction_is_always_true(PlannerInfo *root,
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RestrictInfo *restrictinfo);
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extern bool restriction_is_always_false(PlannerInfo *root,
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RestrictInfo *restrictinfo);
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extern void distribute_restrictinfo_to_rels(PlannerInfo *root,
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RestrictInfo *restrictinfo);
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extern RestrictInfo *process_implied_equality(PlannerInfo *root,
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Oid opno,
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Oid collation,
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Expr *item1,
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Expr *item2,
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Relids qualscope,
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Index security_level,
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bool both_const);
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extern RestrictInfo *build_implied_join_equality(PlannerInfo *root,
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Oid opno,
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Oid collation,
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Expr *item1,
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Expr *item2,
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Relids qualscope,
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Index security_level);
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extern void match_foreign_keys_to_quals(PlannerInfo *root);
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/*
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* prototypes for plan/analyzejoins.c
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*/
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extern List *remove_useless_joins(PlannerInfo *root, List *joinlist);
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extern void reduce_unique_semijoins(PlannerInfo *root);
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extern bool query_supports_distinctness(Query *query);
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extern bool query_is_distinct_for(Query *query, List *colnos, List *opids);
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extern bool innerrel_is_unique(PlannerInfo *root,
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Relids joinrelids, Relids outerrelids, RelOptInfo *innerrel,
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JoinType jointype, List *restrictlist, bool force_cache);
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extern bool innerrel_is_unique_ext(PlannerInfo *root, Relids joinrelids,
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Relids outerrelids, RelOptInfo *innerrel,
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JoinType jointype, List *restrictlist,
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bool force_cache, List **uclauses);
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extern List *remove_useless_self_joins(PlannerInfo *root, List *jointree);
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/*
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* prototypes for plan/setrefs.c
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*/
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extern Plan *set_plan_references(PlannerInfo *root, Plan *plan);
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extern bool trivial_subqueryscan(SubqueryScan *plan);
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extern Param *find_minmax_agg_replacement_param(PlannerInfo *root,
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Aggref *aggref);
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extern void record_plan_function_dependency(PlannerInfo *root, Oid funcid);
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extern void record_plan_type_dependency(PlannerInfo *root, Oid typid);
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extern bool extract_query_dependencies_walker(Node *node, PlannerInfo *context);
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#endif /* PLANMAIN_H */
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