MiniOB
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MiniOB is one mini database, helping developers to learn how database works.
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src
observer
sql
optimizer
conjunction_simplification_rule.h
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/* Copyright (c) 2021 OceanBase and/or its affiliates. All rights reserved.
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miniob 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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http://license.coscl.org.cn/MulanPSL2
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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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// Created by Wangyunlai on 2022/12/26.
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//
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#pragma once
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#include "sql/optimizer/rewrite_rule.h"
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class
LogicalOperator
;
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class
ConjunctionSimplificationRule
:
public
ExpressionRewriteRule
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{
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public
:
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ConjunctionSimplificationRule
() =
default
;
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virtual
~ConjunctionSimplificationRule
() =
default
;
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RC rewrite(std::unique_ptr<Expression> &expr,
bool
&change_made)
override
;
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private
:
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};
ConjunctionSimplificationRule
简化多个表达式联结的运算
Definition:
conjunction_simplification_rule.h:27
ExpressionRewriteRule
表达式的重写规则
Definition:
rewrite_rule.h:41
LogicalOperator
逻辑算子描述当前执行计划要做什么
Definition:
logical_operator.h:50
制作者
1.9.5