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/*-------------------------------------------------------------------------
*
* nodeFuncs.h
*
*
*
* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: nodeFuncs.h,v 1.11 2000/01/26 05:58:16 momjian Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef NODEFUNCS_H
#define NODEFUNCS_H
#include "nodes/primnodes.h"
extern bool single_node(Node *node);
extern bool var_is_outer(Var *var);
extern bool var_is_rel(Var *var);
extern Oper *replace_opid(Oper *oper);
extern bool non_null(Expr *c);
#endif /* NODEFUNCS_H */
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