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[GLUTEN-6159][CH] Support array functions with lambda functions (#6248)
What changes were proposed in this pull request? (Please fill in changes proposed in this fix) Fixes: #6159 support following array functions filter transform aggregate How was this patch tested? (Please explain how this patch was tested. E.g. unit tests, integration tests, manual tests) unit tests (If this patch involves UI changes, please attach a screenshot; otherwise, remove this)
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154 changes: 154 additions & 0 deletions
154
cpp-ch/local-engine/Parser/scalar_function_parser/arrayHighOrderFunctions.cpp
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| /* | ||
| * 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. | ||
| */ | ||
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| #include <Parser/FunctionParser.h> | ||
| #include <Common/Exception.h> | ||
| #include <Poco/Logger.h> | ||
| #include <Common/logger_useful.h> | ||
| #include <Common/CHUtil.h> | ||
| #include <DataTypes/DataTypeFunction.h> | ||
| #include <DataTypes/DataTypeNullable.h> | ||
| #include <Core/Types.h> | ||
| #include <Parser/TypeParser.h> | ||
| #include <Parser/scalar_function_parser/lambdaFunction.h> | ||
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| namespace DB::ErrorCodes | ||
| { | ||
| extern const int LOGICAL_ERROR; | ||
| } | ||
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| namespace local_engine | ||
| { | ||
| class ArrayFilter : public FunctionParser | ||
| { | ||
| public: | ||
| static constexpr auto name = "filter"; | ||
| explicit ArrayFilter(SerializedPlanParser * plan_parser_) : FunctionParser(plan_parser_) {} | ||
| ~ArrayFilter() override = default; | ||
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| String getName() const override { return name; } | ||
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| String getCHFunctionName(const substrait::Expression_ScalarFunction & scalar_function) const override | ||
| { | ||
| return "arrayFilter"; | ||
| } | ||
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| const DB::ActionsDAG::Node * parse(const substrait::Expression_ScalarFunction & substrait_func, | ||
| DB::ActionsDAGPtr & actions_dag) const | ||
| { | ||
| auto ch_func_name = getCHFunctionName(substrait_func); | ||
| auto parsed_args = parseFunctionArguments(substrait_func, ch_func_name, actions_dag); | ||
| assert(parsed_args.size() == 2); | ||
| if (collectLambdaArguments(*plan_parser, substrait_func.arguments()[1].value().scalar_function()).size() == 1) | ||
| return toFunctionNode(actions_dag, ch_func_name, {parsed_args[1], parsed_args[0]}); | ||
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| /// filter with index argument. | ||
| const auto * range_end_node = toFunctionNode(actions_dag, "length", {toFunctionNode(actions_dag, "assumeNotNull", {parsed_args[0]})}); | ||
| range_end_node = ActionsDAGUtil::convertNodeType( | ||
| actions_dag, range_end_node, "Nullable(Int32)", range_end_node->result_name); | ||
| const auto * index_array_node = toFunctionNode( | ||
| actions_dag, | ||
| "range", | ||
| {addColumnToActionsDAG(actions_dag, std::make_shared<DataTypeInt32>(), 0), range_end_node}); | ||
| return toFunctionNode(actions_dag, ch_func_name, {parsed_args[1], parsed_args[0], index_array_node}); | ||
| } | ||
| }; | ||
| static FunctionParserRegister<ArrayFilter> register_array_filter; | ||
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| class ArrayTransform : public FunctionParser | ||
| { | ||
| public: | ||
| static constexpr auto name = "transform"; | ||
| explicit ArrayTransform(SerializedPlanParser * plan_parser_) : FunctionParser(plan_parser_) {} | ||
| ~ArrayTransform() override = default; | ||
| String getName() const override { return name; } | ||
| String getCHFunctionName(const substrait::Expression_ScalarFunction & scalar_function) const override | ||
| { | ||
| return "arrayMap"; | ||
| } | ||
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| const DB::ActionsDAG::Node * parse(const substrait::Expression_ScalarFunction & substrait_func, | ||
| DB::ActionsDAGPtr & actions_dag) const | ||
| { | ||
| auto ch_func_name = getCHFunctionName(substrait_func); | ||
| auto lambda_args = collectLambdaArguments(*plan_parser, substrait_func.arguments()[1].value().scalar_function()); | ||
| auto parsed_args = parseFunctionArguments(substrait_func, ch_func_name, actions_dag); | ||
| assert(parsed_args.size() == 2); | ||
| if (lambda_args.size() == 1) | ||
| { | ||
| return toFunctionNode(actions_dag, ch_func_name, {parsed_args[1], parsed_args[0]}); | ||
| } | ||
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| /// transform with index argument. | ||
| const auto * range_end_node = toFunctionNode(actions_dag, "length", {toFunctionNode(actions_dag, "assumeNotNull", {parsed_args[0]})}); | ||
| range_end_node = ActionsDAGUtil::convertNodeType( | ||
| actions_dag, range_end_node, "Nullable(Int32)", range_end_node->result_name); | ||
| const auto * index_array_node = toFunctionNode( | ||
| actions_dag, | ||
| "range", | ||
| {addColumnToActionsDAG(actions_dag, std::make_shared<DataTypeInt32>(), 0), range_end_node}); | ||
| return toFunctionNode(actions_dag, ch_func_name, {parsed_args[1], parsed_args[0], index_array_node}); | ||
| } | ||
| }; | ||
| static FunctionParserRegister<ArrayTransform> register_array_map; | ||
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| class ArrayAggregate : public FunctionParser | ||
| { | ||
| public: | ||
| static constexpr auto name = "aggregate"; | ||
| explicit ArrayAggregate(SerializedPlanParser * plan_parser_) : FunctionParser(plan_parser_) {} | ||
| ~ArrayAggregate() override = default; | ||
| String getName() const override { return name; } | ||
| String getCHFunctionName(const substrait::Expression_ScalarFunction & scalar_function) const override | ||
| { | ||
| return "arrayFold"; | ||
| } | ||
| const DB::ActionsDAG::Node * parse(const substrait::Expression_ScalarFunction & substrait_func, | ||
| DB::ActionsDAGPtr & actions_dag) const | ||
| { | ||
| auto ch_func_name = getCHFunctionName(substrait_func); | ||
| auto parsed_args = parseFunctionArguments(substrait_func, ch_func_name, actions_dag); | ||
| assert(parsed_args.size() == 3); | ||
| const auto * function_type = typeid_cast<const DataTypeFunction *>(parsed_args[2]->result_type.get()); | ||
| if (!function_type) | ||
| throw DB::Exception(DB::ErrorCodes::LOGICAL_ERROR, "The third argument of aggregate function must be a lambda function"); | ||
| if (!parsed_args[1]->result_type->equals(*(function_type->getReturnType()))) | ||
| { | ||
| parsed_args[1] = ActionsDAGUtil::convertNodeType( | ||
| actions_dag, | ||
| parsed_args[1], | ||
| function_type->getReturnType()->getName(), | ||
| parsed_args[1]->result_name); | ||
| } | ||
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| /// arrayFold cannot accept nullable(array) | ||
| const auto * array_col_node = parsed_args[0]; | ||
| if (parsed_args[0]->result_type->isNullable()) | ||
| { | ||
| array_col_node = toFunctionNode(actions_dag, "assumeNotNull", {parsed_args[0]}); | ||
| } | ||
| const auto * func_node = toFunctionNode(actions_dag, ch_func_name, {parsed_args[2], array_col_node, parsed_args[1]}); | ||
| /// For null array, result is null. | ||
| /// TODO: make a new version of arrayFold that can handle nullable array. | ||
| const auto * is_null_node = toFunctionNode(actions_dag, "isNull", {parsed_args[0]}); | ||
| const auto * null_node = addColumnToActionsDAG(actions_dag, DB::makeNullable(func_node->result_type), DB::Null()); | ||
| return toFunctionNode(actions_dag, "if", {is_null_node, null_node, func_node}); | ||
| } | ||
| }; | ||
| static FunctionParserRegister<ArrayAggregate> register_array_aggregate; | ||
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| } |
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