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branch-3.0: [feature](table-function)support posexplode table function …
…#43221 (#45782) Cherry-picked from #43221 Co-authored-by: zhangstar333 <[email protected]>
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,155 @@ | ||
| // 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/exprs/table_function/vposexplode.h" | ||
|
|
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| #include <glog/logging.h> | ||
|
|
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| #include <ostream> | ||
| #include <vector> | ||
|
|
||
| #include "common/status.h" | ||
| #include "vec/columns/column.h" | ||
| #include "vec/columns/column_nullable.h" | ||
| #include "vec/columns/columns_number.h" | ||
| #include "vec/common/assert_cast.h" | ||
| #include "vec/common/string_ref.h" | ||
| #include "vec/core/block.h" | ||
| #include "vec/core/column_with_type_and_name.h" | ||
| #include "vec/exprs/vexpr.h" | ||
| #include "vec/exprs/vexpr_context.h" | ||
|
|
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| namespace doris::vectorized { | ||
|
|
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| VPosExplodeTableFunction::VPosExplodeTableFunction() { | ||
| _fn_name = "posexplode"; | ||
| } | ||
|
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| Status VPosExplodeTableFunction::process_init(Block* block, RuntimeState* state) { | ||
| CHECK(_expr_context->root()->children().size() == 1) | ||
| << "VPosExplodeTableFunction only support 1 child but has " | ||
| << _expr_context->root()->children().size(); | ||
|
|
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| int value_column_idx = -1; | ||
| RETURN_IF_ERROR(_expr_context->root()->children()[0]->execute(_expr_context.get(), block, | ||
| &value_column_idx)); | ||
|
|
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| _collection_column = | ||
| block->get_by_position(value_column_idx).column->convert_to_full_column_if_const(); | ||
|
|
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| if (!extract_column_array_info(*_collection_column, _array_detail)) { | ||
| return Status::NotSupported("column type {} not supported now, only support array", | ||
| block->get_by_position(value_column_idx).column->get_name()); | ||
| } | ||
| if (is_column_nullable(*_collection_column)) { | ||
| _array_data_column = | ||
| assert_cast<const ColumnArray&>( | ||
| assert_cast<const ColumnNullable&>(*_collection_column).get_nested_column()) | ||
| .get_data_ptr(); | ||
| } else { | ||
| _array_data_column = assert_cast<const ColumnArray&>(*_collection_column).get_data_ptr(); | ||
| } | ||
| return Status::OK(); | ||
| } | ||
|
|
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| void VPosExplodeTableFunction::process_row(size_t row_idx) { | ||
| DCHECK(row_idx < _collection_column->size()); | ||
| TableFunction::process_row(row_idx); | ||
|
|
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| if (!_array_detail.array_nullmap_data || !_array_detail.array_nullmap_data[row_idx]) { | ||
| _collection_offset = (*_array_detail.offsets_ptr)[row_idx - 1]; | ||
| _cur_size = (*_array_detail.offsets_ptr)[row_idx] - _collection_offset; | ||
| } | ||
| } | ||
|
|
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| void VPosExplodeTableFunction::process_close() { | ||
| _collection_column = nullptr; | ||
| _array_data_column = nullptr; | ||
| _array_detail.reset(); | ||
| _collection_offset = 0; | ||
| } | ||
|
|
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| void VPosExplodeTableFunction::get_same_many_values(MutableColumnPtr& column, int length) { | ||
| // now we only support array column explode to struct column | ||
| size_t pos = _collection_offset + _cur_offset; | ||
| // if current is empty array row, also append a default value | ||
| if (current_empty()) { | ||
| column->insert_many_defaults(length); | ||
| return; | ||
| } | ||
| ColumnStruct* ret = nullptr; | ||
| // this _is_nullable is whole output column's nullable | ||
| if (_is_nullable) { | ||
| ret = assert_cast<ColumnStruct*>( | ||
| assert_cast<ColumnNullable*>(column.get())->get_nested_column_ptr().get()); | ||
| assert_cast<ColumnUInt8*>( | ||
| assert_cast<ColumnNullable*>(column.get())->get_null_map_column_ptr().get()) | ||
| ->insert_many_defaults(length); | ||
| } else if (column->is_column_struct()) { | ||
| ret = assert_cast<ColumnStruct*>(column.get()); | ||
| } else { | ||
| throw Exception(ErrorCode::INTERNAL_ERROR, | ||
| "only support array column explode to struct column"); | ||
| } | ||
| if (!ret || ret->tuple_size() != 2) { | ||
| throw Exception( | ||
| ErrorCode::INTERNAL_ERROR, | ||
| "only support array column explode to two column, but given: ", ret->tuple_size()); | ||
| } | ||
| auto& pose_column_nullable = assert_cast<ColumnNullable&>(ret->get_column(0)); | ||
| pose_column_nullable.get_null_map_column().insert_many_defaults(length); | ||
| assert_cast<ColumnInt32&>(pose_column_nullable.get_nested_column()) | ||
| .insert_many_vals(_cur_offset, length); | ||
| ret->get_column(1).insert_many_from(*_array_data_column, pos, length); | ||
| } | ||
|
|
||
| int VPosExplodeTableFunction::get_value(MutableColumnPtr& column, int max_step) { | ||
| max_step = std::min(max_step, (int)(_cur_size - _cur_offset)); | ||
| size_t pos = _collection_offset + _cur_offset; | ||
| if (current_empty()) { | ||
| column->insert_default(); | ||
| max_step = 1; | ||
| } else { | ||
| ColumnStruct* struct_column = nullptr; | ||
| if (_is_nullable) { | ||
| auto* nullable_column = assert_cast<ColumnNullable*>(column.get()); | ||
| struct_column = | ||
| assert_cast<ColumnStruct*>(nullable_column->get_nested_column_ptr().get()); | ||
| auto* nullmap_column = | ||
| assert_cast<ColumnUInt8*>(nullable_column->get_null_map_column_ptr().get()); | ||
| // here nullmap_column insert max_step many defaults as if array[row_idx] is NULL | ||
| // will be not update value, _cur_size = 0, means current_empty; | ||
| // so here could insert directly | ||
| nullmap_column->insert_many_defaults(max_step); | ||
| } else { | ||
| struct_column = assert_cast<ColumnStruct*>(column.get()); | ||
| } | ||
| if (!struct_column || struct_column->tuple_size() != 2) { | ||
| throw Exception(ErrorCode::INTERNAL_ERROR, | ||
| "only support array column explode to two column, but given: ", | ||
| struct_column->tuple_size()); | ||
| } | ||
| auto& pose_column_nullable = assert_cast<ColumnNullable&>(struct_column->get_column(0)); | ||
| pose_column_nullable.get_null_map_column().insert_many_defaults(max_step); | ||
| assert_cast<ColumnInt32&>(pose_column_nullable.get_nested_column()) | ||
| .insert_range_of_integer(_cur_offset, _cur_offset + max_step); | ||
| struct_column->get_column(1).insert_range_from(*_array_data_column, pos, max_step); | ||
| } | ||
| forward(max_step); | ||
| return max_step; | ||
| } | ||
| } // namespace doris::vectorized |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,50 @@ | ||
| // 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. | ||
|
|
||
| #pragma once | ||
|
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| #include "common/status.h" | ||
| #include "vec/columns/column_map.h" | ||
| #include "vec/data_types/data_type.h" | ||
| #include "vec/data_types/data_type_array.h" | ||
| #include "vec/exprs/table_function/table_function.h" | ||
| #include "vec/functions/array/function_array_utils.h" | ||
|
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| namespace doris::vectorized { | ||
|
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| class VPosExplodeTableFunction : public TableFunction { | ||
| ENABLE_FACTORY_CREATOR(VPosExplodeTableFunction); | ||
|
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| public: | ||
| VPosExplodeTableFunction(); | ||
|
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| ~VPosExplodeTableFunction() override = default; | ||
|
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| Status process_init(Block* block, RuntimeState* state) override; | ||
| void process_row(size_t row_idx) override; | ||
| void process_close() override; | ||
| void get_same_many_values(MutableColumnPtr& column, int length) override; | ||
| int get_value(MutableColumnPtr& column, int max_step) override; | ||
|
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| private: | ||
| ColumnPtr _collection_column; | ||
| ColumnPtr _array_data_column; | ||
| ColumnArrayExecutionData _array_detail; | ||
| size_t _collection_offset; // start offset of array[row_idx] | ||
| }; | ||
|
|
||
| } // namespace doris::vectorized |
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80 changes: 80 additions & 0 deletions
80
.../main/java/org/apache/doris/nereids/trees/expressions/functions/generator/PosExplode.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,80 @@ | ||
| // 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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| package org.apache.doris.nereids.trees.expressions.functions.generator; | ||
|
|
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| import org.apache.doris.catalog.FunctionSignature; | ||
| import org.apache.doris.nereids.exceptions.AnalysisException; | ||
| import org.apache.doris.nereids.trees.expressions.Expression; | ||
| import org.apache.doris.nereids.trees.expressions.functions.PropagateNullable; | ||
| import org.apache.doris.nereids.trees.expressions.shape.UnaryExpression; | ||
| import org.apache.doris.nereids.trees.expressions.visitor.ExpressionVisitor; | ||
| import org.apache.doris.nereids.types.ArrayType; | ||
| import org.apache.doris.nereids.types.IntegerType; | ||
| import org.apache.doris.nereids.types.StructField; | ||
| import org.apache.doris.nereids.types.StructType; | ||
|
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| import com.google.common.base.Preconditions; | ||
| import com.google.common.collect.ImmutableList; | ||
|
|
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| import java.util.List; | ||
|
|
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| /** | ||
| * PosExplode(array('a','b','c')) generate two columns and three rows with: | ||
| * pose column: 0, 1, 2 | ||
| * value column: 'a', 'b', 'c' | ||
| */ | ||
| public class PosExplode extends TableGeneratingFunction implements UnaryExpression, PropagateNullable { | ||
|
|
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| /** | ||
| * constructor with 1 argument. | ||
| */ | ||
| public PosExplode(Expression arg) { | ||
| super("posexplode", arg); | ||
| } | ||
|
|
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| /** | ||
| * withChildren. | ||
| */ | ||
| @Override | ||
| public PosExplode withChildren(List<Expression> children) { | ||
| Preconditions.checkArgument(children.size() == 1); | ||
| return new PosExplode(children.get(0)); | ||
| } | ||
|
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| @Override | ||
| public void checkLegalityBeforeTypeCoercion() { | ||
| if (!(child().getDataType() instanceof ArrayType)) { | ||
| throw new AnalysisException("only support array type for posexplode function but got " | ||
| + child().getDataType()); | ||
| } | ||
| } | ||
|
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| @Override | ||
| public List<FunctionSignature> getSignatures() { | ||
| return ImmutableList.of( | ||
| FunctionSignature.ret(new StructType(ImmutableList.of( | ||
| new StructField("pos", IntegerType.INSTANCE, true, ""), | ||
| new StructField("col", ((ArrayType) child().getDataType()).getItemType(), true, "")))) | ||
| .args(child().getDataType())); | ||
| } | ||
|
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| @Override | ||
| public <R, C> R accept(ExpressionVisitor<R, C> visitor, C context) { | ||
| return visitor.visitPosExplode(this, context); | ||
| } | ||
| } |
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