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/*-------------------------------------------------------------------------
*
* execdefs.h--
*
*
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: execdefs.h,v 1.1.1.1 1996/07/09 06:21:25 scrappy Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef EXECDEFS_H
#define EXECDEFS_H
/* ----------------
* executor scan direction definitions
* ----------------
*/
#define EXEC_FRWD 1 /* Scan forward */
#define EXEC_BKWD -1 /* Scan backward */
/* ----------------
* ExecutePlan() tuplecount definitions
* ----------------
*/
#define ALL_TUPLES 0 /* return all tuples */
#define ONE_TUPLE 1 /* return only one tuple */
/* ----------------
* constants used by ExecMain
* ----------------
*/
#define EXEC_RUN 3
#define EXEC_FOR 4
#define EXEC_BACK 5
#define EXEC_RETONE 6
#define EXEC_RESULT 7
/* ----------------
* Merge Join states
* ----------------
*/
#define EXEC_MJ_INITIALIZE 1
#define EXEC_MJ_JOINMARK 2
#define EXEC_MJ_JOINTEST 3
#define EXEC_MJ_JOINTUPLES 4
#define EXEC_MJ_NEXTOUTER 5
#define EXEC_MJ_TESTOUTER 6
#define EXEC_MJ_NEXTINNER 7
#define EXEC_MJ_SKIPINNER 8
#define EXEC_MJ_SKIPOUTER 9
#endif /* EXECDEFS_H */
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