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/*-------------------------------------------------------------------------
*
* keys.h--
* prototypes for keys.c.
*
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id$
*
*-------------------------------------------------------------------------
*/
#ifndef KEYS_H
#define KEYS_H
extern bool match_indexkey_operand(int indexkey, Var *operand, Rel *rel);
extern bool equal_indexkey_var(int index_key, Var *var);
extern Var *extract_subkey(JoinKey *jk, int which_subkey);
extern bool samekeys(List *keys1, List *keys2);
extern List *collect_index_pathkeys(int *index_keys, List *tlist);
#endif /* KEYS_H */
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