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

   1 /*-------------------------------------------------------------------------
   2  *
   3  * placeholder.h
   4  *        prototypes for optimizer/util/placeholder.c.
   5  *
   6  *
   7  * Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
   8  * Portions Copyright (c) 1994, Regents of the University of California
   9  *
  10  * $PostgreSQL: pgsql/src/include/optimizer/placeholder.h,v 1.3 2009/06/11 14:49:11 momjian Exp $
  11  *
  12  *-------------------------------------------------------------------------
  13  */
  14 #ifndef PLACEHOLDER_H
  15 #define PLACEHOLDER_H
  16
  17 #include "nodes/relation.h"
  18
  19
  20 extern PlaceHolderVar *make_placeholder_expr(PlannerInfo *root, Expr *expr,
  21                                           Relids phrels);
  22 extern PlaceHolderInfo *find_placeholder_info(PlannerInfo *root,
  23                                           PlaceHolderVar *phv);
  24 extern void fix_placeholder_eval_levels(PlannerInfo *root);
  25 extern void add_placeholders_to_joinrel(PlannerInfo *root,
  26                                                         RelOptInfo *joinrel);
  27
  28 #endif   /* PLACEHOLDER_H */