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