* Copyright (c) 2020 Huawei Technologies Co.,Ltd.
*
* openGauss is licensed under Mulan PSL v2.
* You can use this software according to the terms and conditions of the Mulan PSL v2.
* You may obtain a copy of Mulan PSL v2 at:
*
* http://license.coscl.org.cn/MulanPSL2
*
* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
* See the Mulan PSL v2 for more details.
* ---------------------------------------------------------------------------------------
*
* randomplan.h
* prototypes for randomplan.c
*
*
* IDENTIFICATION
* src/include/optimizer/randomplan.h
*
* ---------------------------------------------------------------------------------------
*/
#ifndef RANDOMPLAN_H
#define RANDOMPLAN_H
#include "nodes/relation.h"
#define OPTIMIZE_PLAN 0
#define RANDOM_PLAN_DEFAULT -1
extern int choose_random_option(int optionnum);
extern void set_inital_plan_seed();
extern uint32 get_inital_plan_seed();
extern List* get_random_path(RelOptInfo* parent_rel, Path** cheapest_startup_path, Path** cheapest_total_path);
extern char* get_random_plan_string();
#endif