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/*-------------------------------------------------------------------------
*
* planmain.h
* prototypes for various files in optimizer/plan
*
*
* Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/optimizer/planmain.h
*
*-------------------------------------------------------------------------
*/
#ifndef PLANMAIN_H
#define PLANMAIN_H
#include "nodes/plannodes.h"
#include "nodes/relation.h"
/* GUC parameters */
#define DEFAULT_CURSOR_TUPLE_FRACTION 0.1
extern double cursor_tuple_fraction;
/* query_planner callback to compute query_pathkeys */
typedef void (*query_pathkeys_callback) (PlannerInfo *root, void *extra);
/*
* prototypes for plan/planmain.c
*/
extern void query_planner(PlannerInfo *root, List *tlist,
double tuple_fraction, double limit_tuples,
query_pathkeys_callback qp_callback, void *qp_extra,
Path **cheapest_path, Path **sorted_path,
double *num_groups);
/*
* prototypes for plan/planagg.c
*/
extern void preprocess_minmax_aggregates(PlannerInfo *root, List *tlist);
extern Plan *optimize_minmax_aggregates(PlannerInfo *root, List *tlist,
const AggClauseCosts *aggcosts, Path *best_path);
/*
* prototypes for plan/createplan.c
*/
extern Plan *create_plan(PlannerInfo *root, Path *best_path);
extern SubqueryScan *make_subqueryscan(List *qptlist, List *qpqual,
Index scanrelid, Plan *subplan);
extern ForeignScan *make_foreignscan(List *qptlist, List *qpqual,
Index scanrelid, List *fdw_exprs, List *fdw_private);
extern Append *make_append(List *appendplans, List *tlist);
extern RecursiveUnion *make_recursive_union(List *tlist,
Plan *lefttree, Plan *righttree, int wtParam,
List *distinctList, long numGroups);
extern Sort *make_sort_from_pathkeys(PlannerInfo *root, Plan *lefttree,
List *pathkeys, double limit_tuples);
extern Sort *make_sort_from_sortclauses(PlannerInfo *root, List *sortcls,
Plan *lefttree);
extern Sort *make_sort_from_groupcols(PlannerInfo *root, List *groupcls,
AttrNumber *grpColIdx, Plan *lefttree);
extern Agg *make_agg(PlannerInfo *root, List *tlist, List *qual,
AggStrategy aggstrategy, const AggClauseCosts *aggcosts,
int numGroupCols, AttrNumber *grpColIdx, Oid *grpOperators,
long numGroups,
Plan *lefttree);
extern WindowAgg *make_windowagg(PlannerInfo *root, List *tlist,
List *windowFuncs, Index winref,
int partNumCols, AttrNumber *partColIdx, Oid *partOperators,
int ordNumCols, AttrNumber *ordColIdx, Oid *ordOperators,
int frameOptions, Node *startOffset, Node *endOffset,
Plan *lefttree);
extern Group *make_group(PlannerInfo *root, List *tlist, List *qual,
int numGroupCols, AttrNumber *grpColIdx, Oid *grpOperators,
double numGroups,
Plan *lefttree);
extern Plan *materialize_finished_plan(Plan *subplan);
extern Unique *make_unique(Plan *lefttree, List *distinctList);
extern LockRows *make_lockrows(Plan *lefttree, List *rowMarks, int epqParam);
extern Limit *make_limit(Plan *lefttree, Node *limitOffset, Node *limitCount,
int64 offset_est, int64 count_est);
extern SetOp *make_setop(SetOpCmd cmd, SetOpStrategy strategy, Plan *lefttree,
List *distinctList, AttrNumber flagColIdx, int firstFlag,
long numGroups, double outputRows);
extern Result *make_result(PlannerInfo *root, List *tlist,
Node *resconstantqual, Plan *subplan);
extern ModifyTable *make_modifytable(CmdType operation, bool canSetTag,
List *resultRelations, List *subplans, List *returningLists,
List *rowMarks, int epqParam);
extern bool is_projection_capable_plan(Plan *plan);
/*
* prototypes for plan/initsplan.c
*/
extern int from_collapse_limit;
extern int join_collapse_limit;
extern void add_base_rels_to_query(PlannerInfo *root, Node *jtnode);
extern void build_base_rel_tlists(PlannerInfo *root, List *final_tlist);
extern void add_vars_to_targetlist(PlannerInfo *root, List *vars,
Relids where_needed, bool create_new_ph);
extern List *deconstruct_jointree(PlannerInfo *root);
extern void distribute_restrictinfo_to_rels(PlannerInfo *root,
RestrictInfo *restrictinfo);
extern void process_implied_equality(PlannerInfo *root,
Oid opno,
Oid collation,
Expr *item1,
Expr *item2,
Relids qualscope,
Relids nullable_relids,
bool below_outer_join,
bool both_const);
extern RestrictInfo *build_implied_join_equality(Oid opno,
Oid collation,
Expr *item1,
Expr *item2,
Relids qualscope,
Relids nullable_relids);
/*
* prototypes for plan/analyzejoins.c
*/
extern List *remove_useless_joins(PlannerInfo *root, List *joinlist);
/*
* prototypes for plan/setrefs.c
*/
extern Plan *set_plan_references(PlannerInfo *root, Plan *plan);
extern void fix_opfuncids(Node *node);
extern void set_opfuncid(OpExpr *opexpr);
extern void set_sa_opfuncid(ScalarArrayOpExpr *opexpr);
extern void record_plan_function_dependency(PlannerInfo *root, Oid funcid);
extern void extract_query_dependencies(Node *query,
List **relationOids,
List **invalItems);
#endif /* PLANMAIN_H */
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