57 lines
1.8 KiB
C++
57 lines
1.8 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 _OB_EXPR_LNNVL_H
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#define _OB_EXPR_LNNVL_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 ObExprFuncLnnvl : public ObFuncExprOperator
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{
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public:
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explicit ObExprFuncLnnvl(common::ObIAllocator &alloc);
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virtual ~ObExprFuncLnnvl();
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virtual int calc_result_type1(ObExprResType &type,
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ObExprResType &type1,
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common::ObExprTypeCtx &type_ctx) const;
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virtual int cg_expr(ObExprCGCtx &op_cg_ctx,
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const ObRawExpr &raw_expr,
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ObExpr &rt_expr) const override;
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static int eval_lnnvl(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &expr_datum);
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private:
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// disallow copy
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DISALLOW_COPY_AND_ASSIGN(ObExprFuncLnnvl);
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};
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inline int ObExprFuncLnnvl::calc_result_type1(ObExprResType &type,
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ObExprResType &type1,
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common::ObExprTypeCtx &type_ctx) const
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{
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UNUSED(type_ctx);
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UNUSED(type1);
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type.set_tinyint();
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type.set_scale(common::ObAccuracy::DDL_DEFAULT_ACCURACY[common::ObTinyIntType].scale_);
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type.set_precision(common::ObAccuracy::DDL_DEFAULT_ACCURACY[common::ObTinyIntType].precision_);
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type1.set_calc_type(common::ObTinyIntType);
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return common::OB_SUCCESS;
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}
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}
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}
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#endif /*OB_SQL_EXPR_FUNC_END*/
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