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/*-------------------------------------------------------------------------
*
* keys.h
* prototypes for keys.c.
*
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: keys.h,v 1.15 1999/05/25 22:43:09 momjian Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef KEYS_H
#define KEYS_H
#include "nodes/nodes.h"
#include "nodes/relation.h"
extern bool match_indexkey_operand(int indexkey, Var *operand, RelOptInfo *rel);
extern Var *extract_join_key(JoinKey *jk, int outer_or_inner);
extern bool pathkeys_match(List *keys1, List *keys2, int *better_key);
extern List *collect_index_pathkeys(int *index_keys, List *tlist);
#endif /* KEYS_H */
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