zhangstar333 commented on code in PR #17931: URL: https://github.com/apache/doris/pull/17931#discussion_r1143029960
########## be/src/vec/functions/array/function_array_exists.cpp: ########## @@ -0,0 +1,90 @@ +// 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 <vec/columns/column_array.h> +#include <vec/columns/column_nullable.h> +#include <vec/columns/columns_number.h> +#include <vec/data_types/data_type_array.h> +#include <vec/data_types/data_type_number.h> +#include <vec/functions/function.h> +#include <vec/functions/function_helpers.h> +#include <vec/functions/simple_function_factory.h> + +#include <vec/utils/util.hpp> + +namespace doris::vectorized { + +// array_exists([1, 2, 3, 0]) -> [1, 1, 1, 0] +class FunctionArrayExists : public IFunction { +public: + static constexpr auto name = "array_exists"; + + static FunctionPtr create() { return std::make_shared<FunctionArrayExists>(); } + + String get_name() const override { return name; } + + size_t get_number_of_arguments() const override { return 1; } + + DataTypePtr get_return_type_impl(const DataTypes& arguments) const override { + DCHECK(is_array(arguments[0])) + << "first argument for function: " << name << " should be DataTypeArray" + << " and arguments[0] is " << arguments[0]->get_name(); + return arguments[0]; + } + + Status execute_impl(FunctionContext* context, Block& block, const ColumnNumbers& arguments, + size_t result, size_t input_rows_count) override { + // 1. get first array column + const auto first_column = + block.get_by_position(arguments[0]).column->convert_to_full_column_if_const(); + const ColumnArray& first_col_array = assert_cast<const ColumnArray&>(*first_column); + const auto& first_off_data = assert_cast<const ColumnArray::ColumnOffsets&>( + first_col_array.get_offsets_column()); + + const auto& nested_nullable_column = + assert_cast<const ColumnNullable&>(*first_col_array.get_data_ptr()); + const auto nested_column = nested_nullable_column.get_nested_column_ptr(); + const size_t nested_column_size = nested_column->size(); + const auto& result_null_map = + nested_nullable_column.get_null_map_column_ptr()->clone_resized(nested_column_size); + + // 2. compute result + const auto& result_column = ColumnUInt8::create(nested_column_size, 0); + auto& result_column_data = result_column->get_data(); + const auto& result_offset_column = first_off_data.clone_resized(first_off_data.size()); + const auto& nested_column_data = assert_cast<const ColumnUInt8&>(*nested_column).get_data(); + + for (size_t row = 0; row < nested_column_size; ++row) { + if (nested_column_data[row] != 0) { Review Comment: here seems to no need for loop, could be memcpy once all data? -- 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. To unsubscribe, e-mail: commits-unsubscr...@doris.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@doris.apache.org For additional commands, e-mail: commits-h...@doris.apache.org
