1 /*-------------------------------------------------------------------------
4 * prototypes for optimizer/util/var.c.
7 * Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
8 * Portions Copyright (c) 1994, Regents of the University of California
10 * $PostgreSQL: pgsql/src/include/optimizer/var.h,v 1.39 2008/10/21 20:42:53 tgl Exp $
12 *-------------------------------------------------------------------------
17 #include "nodes/relation.h"
20 extern Relids pull_varnos(Node *node);
21 extern void pull_varattnos(Node *node, Bitmapset **varattnos);
22 extern bool contain_var_clause(Node *node);
23 extern bool contain_vars_of_level(Node *node, int levelsup);
24 extern int locate_var_of_level(Node *node, int levelsup);
25 extern int locate_var_of_relation(Node *node, int relid, int levelsup);
26 extern int find_minimum_var_level(Node *node);
27 extern List *pull_var_clause(Node *node, bool includePlaceHolderVars);
28 extern Node *flatten_join_alias_vars(PlannerInfo *root, Node *node);