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[FEAT MERGE] 4.3 optimizer enhancement

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Co-authored-by: 2149 <260391947@qq.com>
Co-authored-by: akaError <lzg020616@163.com>
Co-authored-by: jinmaoli <lijinmao.csmaster@gmail.com>
This commit is contained in:
yinyj17
2023-12-16 14:12:43 +00:00
committed by ant-ob-hengtang
parent 438a70b2b8
commit 37fe7ce4eb
50 changed files with 3205 additions and 1059 deletions
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58
src/sql/resolver/expr/ob_raw_expr_canonicalizer_impl.h
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/**
* Copyright (c) 2021 OceanBase
* OceanBase CE is licensed under Mulan PubL v2.
* You can use this software according to the terms and conditions of the Mulan PubL v2.
* You may obtain a copy of Mulan PubL v2 at:
* http://license.coscl.org.cn/MulanPubL-2.0
* 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 PubL v2 for more details.
*/
#ifndef _OB_RAW_EXPR_CANONICALIZER_IMPL_H
#define _OB_RAW_EXPR_CANONICALIZER_IMPL_H
#include "sql/resolver/expr/ob_raw_expr_canonicalizer.h"
namespace oceanbase
{
namespace sql
{
class ObRawExprCanonicalizerImpl : public ObRawExprCanonicalizer
{
public:
explicit ObRawExprCanonicalizerImpl(ObExprResolveContext &ctx);
virtual ~ObRawExprCanonicalizerImpl() {}
virtual int canonicalize(ObRawExpr *&expr);
private:
// types and constants
private:
// disallow copy
DISALLOW_COPY_AND_ASSIGN(ObRawExprCanonicalizerImpl);
// function members
int push_not(ObRawExpr *&expr);
int do_push_not(ObRawExpr *&expr);
int remove_duplicate_conds(ObRawExpr *&expr);
int pull_parallel_expr(ObRawExpr *&expr);
int pull_and_factor(ObRawExpr *&expr);
int pull_similar_expr(ObRawExpr *&expr);
int cluster_and_or(ObRawExpr *&expr);
private:
struct ObOppositeOpPair
{
ObItemType original_;
ObItemType opposite_;
};
static ObItemType get_opposite_op(ObItemType type);
static ObOppositeOpPair OPPOSITE_PAIRS[];
private:
// data members
ObExprResolveContext &ctx_;
// ObIAllocator &allocator_;
};
} // end namespace sql
} // end namespace oceanbase
#endif /* _OB_RAW_EXPR_CANONICALIZER_IMPL_H */