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/*-------------------------------------------------------------------------
*
* plancat.h
* prototypes for plancat.c.
*
*
* Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/optimizer/plancat.h,v 1.49 2008/04/01 00:48:33 tgl Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef PLANCAT_H
#define PLANCAT_H
#include "nodes/relation.h"
#include "utils/rel.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 void estimate_rel_size(Relation rel, int32 *attr_widths,
BlockNumber *pages, double *tuples);
extern bool relation_excluded_by_constraints(PlannerInfo *root,
RelOptInfo *rel, RangeTblEntry *rte);
extern List *build_physical_tlist(PlannerInfo *root, RelOptInfo *rel);
extern List *find_inheritance_children(Oid inhparent);
extern bool has_subclass(Oid relationId);
extern bool has_unique_index(RelOptInfo *rel, AttrNumber attno);
extern Selectivity restriction_selectivity(PlannerInfo *root,
Oid operator,
List *args,
int varRelid);
extern Selectivity join_selectivity(PlannerInfo *root,
Oid operator,
List *args,
JoinType jointype);
#endif /* PLANCAT_H */
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