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/*-------------------------------------------------------------------------
*
* var.h
* prototypes for var.c.
*
*
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: var.h,v 1.26 2003/02/08 20:20:55 tgl Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef VAR_H
#define VAR_H
#include "nodes/relation.h"
extern Relids pull_varnos(Node *node);
extern bool contain_var_reference(Node *node, int varno, int varattno,
int levelsup);
extern bool contain_whole_tuple_var(Node *node, int varno, int levelsup);
extern bool contain_var_clause(Node *node);
extern bool contain_vars_of_level(Node *node, int levelsup);
extern bool contain_vars_above_level(Node *node, int levelsup);
extern List *pull_var_clause(Node *node, bool includeUpperVars);
extern Node *flatten_join_alias_vars(Query *root, Node *node);
#endif /* VAR_H */
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