superdiaodiao commented on code in PR #34391: URL: https://github.com/apache/doris/pull/34391#discussion_r1590531380
########## be/src/vec/functions/function_truncate.h: ########## @@ -1,245 +0,0 @@ -// Licensed to the Apache Software Foundation (ASF) under one -// or more contributor license agreements. See the NOTICE file -// distributed with this work for additional information -// regarding copyright ownership. The ASF licenses this file -// to you under the Apache License, Version 2.0 (the -// "License"); you may not use this file except in compliance -// with the License. You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, -// software distributed under the License is distributed on an -// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY -// KIND, either express or implied. See the License for the -// specific language governing permissions and limitations -// under the License. - -#include <cstddef> -#include <functional> -#include <type_traits> -#include <utility> - -#include "common/exception.h" -#include "common/status.h" -#include "olap/olap_common.h" -#include "round.h" -#include "vec/columns/column.h" -#include "vec/columns/column_const.h" -#include "vec/columns/column_decimal.h" -#include "vec/columns/column_vector.h" -#include "vec/common/assert_cast.h" -#include "vec/core/call_on_type_index.h" -#include "vec/core/field.h" -#include "vec/core/types.h" -#include "vec/data_types/data_type.h" -#include "vec/data_types/data_type_decimal.h" -#include "vec/data_types/data_type_number.h" - -namespace doris::vectorized { - -struct TruncateFloatOneArgImpl { - static constexpr auto name = "truncate"; - static DataTypes get_variadic_argument_types() { return {std::make_shared<DataTypeFloat64>()}; } -}; - -struct TruncateFloatTwoArgImpl { - static constexpr auto name = "truncate"; - static DataTypes get_variadic_argument_types() { - return {std::make_shared<DataTypeFloat64>(), std::make_shared<DataTypeInt32>()}; - } -}; - -struct TruncateDecimalOneArgImpl { - static constexpr auto name = "truncate"; - static DataTypes get_variadic_argument_types() { - // All Decimal types are named Decimal, and real scale will be passed as type argument for execute function - // So we can just register Decimal32 here - return {std::make_shared<DataTypeDecimal<Decimal32>>(9, 0)}; - } -}; - -struct TruncateDecimalTwoArgImpl { - static constexpr auto name = "truncate"; - static DataTypes get_variadic_argument_types() { - return {std::make_shared<DataTypeDecimal<Decimal32>>(9, 0), - std::make_shared<DataTypeInt32>()}; - } -}; - -template <typename Impl> -class FunctionTruncate : public FunctionRounding<Impl, RoundingMode::Trunc, TieBreakingMode::Auto> { -public: - static FunctionPtr create() { return std::make_shared<FunctionTruncate>(); } - - ColumnNumbers get_arguments_that_are_always_constant() const override { return {}; } - // SELECT number, truncate(123.345, 1) FROM number("numbers"="10") - // should NOT behave like two column arguments, so we can not use const column default implementation - bool use_default_implementation_for_constants() const override { return false; } - - Status execute_impl(FunctionContext* context, Block& block, const ColumnNumbers& arguments, - size_t result, size_t input_rows_count) const override { - const ColumnWithTypeAndName& column_general = block.get_by_position(arguments[0]); - ColumnPtr res; - - // potential argument types: - // 0. truncate(ColumnConst, ColumnConst) - // 1. truncate(Column), truncate(Column, ColumnConst) - // 2. truncate(Column, Column) - // 3. truncate(ColumnConst, Column) - - if (arguments.size() == 2 && is_column_const(*block.get_by_position(arguments[0]).column) && - is_column_const(*block.get_by_position(arguments[1]).column)) { - // truncate(ColumnConst, ColumnConst) - auto col_general = - assert_cast<const ColumnConst&>(*column_general.column).get_data_column_ptr(); - Int16 scale_arg = 0; - RETURN_IF_ERROR(FunctionTruncate<Impl>::get_scale_arg( - block.get_by_position(arguments[1]), &scale_arg)); - - auto call = [&](const auto& types) -> bool { - using Types = std::decay_t<decltype(types)>; - using DataType = typename Types::LeftType; - - if constexpr (IsDataTypeNumber<DataType> || IsDataTypeDecimal<DataType>) { - using FieldType = typename DataType::FieldType; - res = Dispatcher<FieldType, RoundingMode::Trunc, - TieBreakingMode::Auto>::apply_vec_const(col_general, - scale_arg); - return true; - } - - return false; - }; - -#if !defined(__SSE4_1__) && !defined(__aarch64__) - /// In case of "nearbyint" function is used, we should ensure the expected rounding mode for the Banker's rounding. - /// Actually it is by default. But we will set it just in case. - - if constexpr (rounding_mode == RoundingMode::Round) { - if (0 != fesetround(FE_TONEAREST)) { - return Status::InvalidArgument("Cannot set floating point rounding mode"); - } - } -#endif - - if (!call_on_index_and_data_type<void>(column_general.type->get_type_id(), call)) { - return Status::InvalidArgument("Invalid argument type {} for function {}", - column_general.type->get_name(), "truncate"); - } - // Important, make sure the result column has the same size as the input column - res = ColumnConst::create(std::move(res), input_rows_count); Review Comment: If constant implement is false, indeed it is necessary. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. 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