src/include/optimizer/tlist.h

   1 /*-------------------------------------------------------------------------
   2  *
   3  * tlist.h
   4  *        prototypes for tlist.c.
   5  *
   6  *
   7  * Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
   8  * Portions Copyright (c) 1994, Regents of the University of California
   9  *
  10  * $PostgreSQL$
  11  *
  12  *-------------------------------------------------------------------------
  13  */
  14 #ifndef TLIST_H
  15 #define TLIST_H
  16
  17 #include "nodes/relation.h"
  18
  19
  20 extern TargetEntry *tlist_member(Node *node, List *targetlist);
  21 extern TargetEntry *tlist_member_ignore_relabel(Node *node, List *targetlist);
  22
  23 extern List *flatten_tlist(List *tlist);
  24 extern List *add_to_flat_tlist(List *tlist, List *vars);
  25
  26 extern List *get_tlist_exprs(List *tlist, bool includeJunk);
  27 extern bool tlist_same_datatypes(List *tlist, List *colTypes, bool junkOK);
  28
  29 extern TargetEntry *get_sortgroupref_tle(Index sortref,
  30                                          List *targetList);
  31 extern TargetEntry *get_sortgroupclause_tle(SortGroupClause *sgClause,
  32                                                 List *targetList);
  33 extern Node *get_sortgroupclause_expr(SortGroupClause *sgClause,
  34                                                  List *targetList);
  35 extern List *get_sortgrouplist_exprs(List *sgClauses,
  36                                                 List *targetList);
  37
  38 extern Oid *extract_grouping_ops(List *groupClause);
  39 extern AttrNumber *extract_grouping_cols(List *groupClause, List *tlist);
  40 extern bool grouping_is_sortable(List *groupClause);
  41 extern bool grouping_is_hashable(List *groupClause);
  42
  43 #endif   /* TLIST_H */