plancat.h

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/*-------------------------------------------------------------------------
 *
 * plancat.h
 *    prototypes for plancat.c.
 *
 *
 * Portions Copyright (c) 1996-2025, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * src/include/optimizer/plancat.h
 *
 *-------------------------------------------------------------------------
 */
#ifndef PLANCAT_H
#define PLANCAT_H
 
#include "nodes/pathnodes.h"
#include "utils/relcache.h"
 
/* Hook for plugins to get control in get_relation_info() */
typedef void (*get_relation_info_hook_type) (PlannerInfo *root,
                                             Oid relationObjectId,
                                             bool inhparent,
                                             RelOptInfo *rel);
extern PGDLLIMPORT get_relation_info_hook_type get_relation_info_hook;
 
 
extern void get_relation_info(PlannerInfo *root, Oid relationObjectId,
                              bool inhparent, RelOptInfo *rel);
 
extern List *infer_arbiter_indexes(PlannerInfo *root);
 
extern void estimate_rel_size(Relation rel, int32 *attr_widths,
                              BlockNumber *pages, double *tuples, double *allvisfrac);
 
extern int32 get_rel_data_width(Relation rel, int32 *attr_widths);
extern int32 get_relation_data_width(Oid relid, int32 *attr_widths);
 
extern bool relation_excluded_by_constraints(PlannerInfo *root,
                                             RelOptInfo *rel, RangeTblEntry *rte);
 
extern List *build_physical_tlist(PlannerInfo *root, RelOptInfo *rel);
 
extern bool has_unique_index(RelOptInfo *rel, AttrNumber attno);
 
extern Selectivity restriction_selectivity(PlannerInfo *root,
                                           Oid operatorid,
                                           List *args,
                                           Oid inputcollid,
                                           int varRelid);
 
extern Selectivity join_selectivity(PlannerInfo *root,
                                    Oid operatorid,
                                    List *args,
                                    Oid inputcollid,
                                    JoinType jointype,
                                    SpecialJoinInfo *sjinfo);
 
extern Selectivity function_selectivity(PlannerInfo *root,
                                        Oid funcid,
                                        List *args,
                                        Oid inputcollid,
                                        bool is_join,
                                        int varRelid,
                                        JoinType jointype,
                                        SpecialJoinInfo *sjinfo);
 
extern void add_function_cost(PlannerInfo *root, Oid funcid, Node *node,
                              QualCost *cost);
 
extern double get_function_rows(PlannerInfo *root, Oid funcid, Node *node);
 
extern bool has_row_triggers(PlannerInfo *root, Index rti, CmdType event);
 
extern bool has_stored_generated_columns(PlannerInfo *root, Index rti);
 
extern Bitmapset *get_dependent_generated_columns(PlannerInfo *root, Index rti,
                                                  Bitmapset *target_cols);
 
#endif                          /* PLANCAT_H */