e537a0c479
Co-authored-by: wjhh2008 <wjh2006-1@163.com> Co-authored-by: GongYusen <986957406@qq.com> Co-authored-by: hy-guo <fqboyg@gmail.com>
64 lines
2.1 KiB
C++
64 lines
2.1 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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#define USING_LOG_PREFIX SQL_ENG
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#include "ob_expr_strcmp.h"
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#include "sql/session/ob_sql_session_info.h"
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#include "share/object/ob_obj_cast.h"
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using namespace oceanbase::common;
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using namespace oceanbase::sql;
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namespace oceanbase
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{
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namespace sql
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{
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ObExprStrcmp::ObExprStrcmp(ObIAllocator &alloc)
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: ObRelationalExprOperator::ObRelationalExprOperator(alloc, T_FUN_SYS_STRCMP, N_STRCMP, 2, NOT_ROW_DIMENSION)
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{
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}
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int ObExprStrcmp::calc_result_type2(ObExprResType &type,
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ObExprResType &type1,
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ObExprResType &type2,
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ObExprTypeCtx &type_ctx) const
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{
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int ret = OB_SUCCESS;
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type.set_int();
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type.set_scale(ObAccuracy::DDL_DEFAULT_ACCURACY[ObIntType].scale_);
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type.set_precision(ObAccuracy::DDL_DEFAULT_ACCURACY[ObIntType].precision_);
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ObCollationType coll_type = CS_TYPE_INVALID;
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ObCollationLevel coll_level = CS_LEVEL_EXPLICIT;
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ObExprResTypes res_types;
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if (OB_FAIL(res_types.push_back(type1))) {
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LOG_WARN("fail to push back res type", K(ret));
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} else if (OB_FAIL(res_types.push_back(type2))) {
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LOG_WARN("fail to push back res type", K(ret));
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} else if (OB_FAIL(aggregate_charsets_for_comparison(type, &res_types.at(0), 2, type_ctx))) {
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LOG_WARN("failed to aggregate_charsets_for_comparison", K(ret));
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} else {
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type.set_calc_type(ObVarcharType);
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type1.set_calc_type(ObVarcharType);
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type2.set_calc_type(ObVarcharType);
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type1.set_calc_collation(type);
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type2.set_calc_collation(type);
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}
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return ret;
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}
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}//end sql namespace
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}//end oceanbase namespace
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