60 lines
2.2 KiB
C++
60 lines
2.2 KiB
C++
/**
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* Copyright (c) 2021 OceanBase
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* OceanBase CE is licensed under Mulan PubL v2.
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* You can use this software according to the terms and conditions of the Mulan PubL v2.
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* You may obtain a copy of Mulan PubL v2 at:
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* http://license.coscl.org.cn/MulanPubL-2.0
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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 PubL v2 for more details.
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*/
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#ifndef OCEANBASE_SQL_ENGINE_EXPR_NULL_SAFE_EQUAL_H_
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#define OCEANBASE_SQL_ENGINE_EXPR_NULL_SAFE_EQUAL_H_
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#include "lib/ob_name_def.h"
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#include "sql/engine/expr/ob_expr_operator.h"
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namespace oceanbase
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{
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namespace sql
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{
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class ObExprNullSafeEqual: public ObRelationalExprOperator
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{
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public:
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ObExprNullSafeEqual();
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explicit ObExprNullSafeEqual(common::ObIAllocator &alloc);
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virtual ~ObExprNullSafeEqual() {};
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virtual int calc_result_type2(ObExprResType &type,
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ObExprResType &type1,
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ObExprResType &type2,
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common::ObExprTypeCtx &type_ctx) const;
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virtual int calc_result_typeN(ObExprResType &type,
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ObExprResType *types,
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int64_t param_num,
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common::ObExprTypeCtx &type_ctx) const;
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static int compare_row2(common::ObObj &result,
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const common::ObNewRow *left_row,
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const common::ObNewRow *right_row,
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common::ObExprCtx &expr_ctx);
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virtual int cg_expr(ObExprCGCtx &expr_cg_ctx, const ObRawExpr &raw_expr,
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ObExpr &rt_expr) const override;
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static int ns_equal_eval(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &expr_datm);
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static int row_ns_equal_eval(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &expr_datm);
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static int ns_equal(const ObExpr &expr, ObDatum &res,
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ObExpr **left, ObEvalCtx &lctx, ObExpr **right, ObEvalCtx &rctx);
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private:
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DISALLOW_COPY_AND_ASSIGN(ObExprNullSafeEqual);
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};
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} // end namespace sql
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} // end namespace oceanbase
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#endif /* OCEANBASE_SQL_ENGINE_EXPR_NULL_SAFE_EQUAL_H_ */
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