postgresql/src/include/optimizer/ordering.h

/*-------------------------------------------------------------------------
 *
 * ordering.h--
 *	  prototypes for ordering.c.
 *
 *
 * Copyright (c) 1994, Regents of the University of California
 *
 * $Id: ordering.h,v 1.5 1997/09/08 02:37:52 momjian Exp $
 *
 *-------------------------------------------------------------------------
 */
#ifndef ORDERING_H
#define ORDERING_H

#include <nodes/relation.h>

extern		bool
equal_path_path_ordering(PathOrder * path_ordering1,
						 PathOrder * path_ordering2);
extern		bool
equal_path_merge_ordering(Oid * path_ordering,
						  MergeOrder * merge_ordering);
extern		bool
equal_merge_merge_ordering(MergeOrder * merge_ordering1,
						   MergeOrder * merge_ordering2);

#endif							/* ORDERING_H */