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

   1 /*-------------------------------------------------------------------------
   2  *
   3  * tlist.h
   4  *        prototypes for tlist.c.
   5  *
   6  *
   7  * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
   8  * Portions Copyright (c) 1994, Regents of the University of California
   9  *
  10  * $Id: tlist.h,v 1.34 2003/02/15 20:12:41 tgl Exp $
  11  *
  12  *-------------------------------------------------------------------------
  13  */
  14 #ifndef TLIST_H
  15 #define TLIST_H
  16
  17 #include "nodes/relation.h"
  18
  19 extern TargetEntry *tlistentry_member(Node *node, List *targetlist);
  20 extern Resdom *tlist_member(Node *node, List *targetlist);
  21
  22 extern void add_var_to_tlist(RelOptInfo *rel, Var *var);
  23 extern TargetEntry *create_tl_element(Var *var, int resdomno);
  24
  25 extern List *new_unsorted_tlist(List *targetlist);
  26 extern List *flatten_tlist(List *tlist);
  27 extern List *add_to_flat_tlist(List *tlist, List *vars);
  28
  29 extern TargetEntry *get_sortgroupclause_tle(SortClause *sortClause,
  30                                                 List *targetList);
  31 extern Node *get_sortgroupclause_expr(SortClause *sortClause,
  32                                                  List *targetList);
  33 extern List *get_sortgrouplist_exprs(List *sortClauses,
  34                                                  List *targetList);
  35
  36 #endif   /* TLIST_H */