granicus.if.org Git - postgresql/blob - src/include/optimizer/restrictinfo.h

   1 /*-------------------------------------------------------------------------
   2  *
   3  * restrictinfo.h
   4  *        prototypes for restrictinfo.c.
   5  *
   6  *
   7  * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
   8  * Portions Copyright (c) 1994, Regents of the University of California
   9  *
  10  * $PostgreSQL: pgsql/src/include/optimizer/restrictinfo.h,v 1.32 2005/07/02 23:00:42 tgl Exp $
  11  *
  12  *-------------------------------------------------------------------------
  13  */
  14 #ifndef RESTRICTINFO_H
  15 #define RESTRICTINFO_H
  16
  17 #include "nodes/relation.h"
  18
  19
  20 extern RestrictInfo *make_restrictinfo(Expr *clause,
  21                                                                            bool is_pushed_down,
  22                                                                            Relids required_relids);
  23 extern List *make_restrictinfo_from_bitmapqual(Path *bitmapqual,
  24                                                                                            bool is_pushed_down);
  25 extern bool restriction_is_or_clause(RestrictInfo *restrictinfo);
  26 extern List *get_actual_clauses(List *restrictinfo_list);
  27 extern void get_actual_join_clauses(List *restrictinfo_list,
  28                                                 List **joinquals, List **otherquals);
  29 extern List *remove_redundant_join_clauses(PlannerInfo *root,
  30                                                           List *restrictinfo_list,
  31                                                           bool isouterjoin);
  32 extern List *select_nonredundant_join_clauses(PlannerInfo *root,
  33                                                                  List *restrictinfo_list,
  34                                                                  List *reference_list,
  35                                                                  bool isouterjoin);
  36
  37 #endif   /* RESTRICTINFO_H */