b41fcbb783
New aggregation function: map_agg. This function requires two arguments: a key and a value, which are used to build a map. select map_agg(column1, column2) from t group by column3;
68 lines
2.9 KiB
C++
68 lines
2.9 KiB
C++
// 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/aggregate_functions/aggregate_function_map.h"
|
|
|
|
#include "runtime/primitive_type.h"
|
|
#include "vec/aggregate_functions/helpers.h"
|
|
|
|
namespace doris::vectorized {
|
|
|
|
template <typename K>
|
|
AggregateFunctionPtr create_agg_function_map_agg(const DataTypes& argument_types,
|
|
const bool result_is_nullable) {
|
|
return creator_without_type::create_ignore_nullable<
|
|
AggregateFunctionMapAgg<AggregateFunctionMapAggData<K>, K>>(argument_types,
|
|
result_is_nullable);
|
|
}
|
|
|
|
AggregateFunctionPtr create_aggregate_function_map_agg(const std::string& name,
|
|
const DataTypes& argument_types,
|
|
const bool result_is_nullable) {
|
|
WhichDataType type(remove_nullable(argument_types[0]));
|
|
|
|
#define DISPATCH(TYPE) \
|
|
if (type.idx == TypeIndex::TYPE) \
|
|
return create_agg_function_map_agg<TYPE>(argument_types, result_is_nullable);
|
|
|
|
FOR_NUMERIC_TYPES(DISPATCH)
|
|
FOR_DECIMAL_TYPES(DISPATCH)
|
|
#undef DISPATCH
|
|
|
|
if (type.idx == TypeIndex::String) {
|
|
return create_agg_function_map_agg<String>(argument_types, result_is_nullable);
|
|
}
|
|
if (type.idx == TypeIndex::DateTime || type.idx == TypeIndex::Date) {
|
|
return create_agg_function_map_agg<Int64>(argument_types, result_is_nullable);
|
|
}
|
|
if (type.idx == TypeIndex::DateV2) {
|
|
return create_agg_function_map_agg<UInt32>(argument_types, result_is_nullable);
|
|
}
|
|
if (type.idx == TypeIndex::DateTimeV2) {
|
|
return create_agg_function_map_agg<UInt64>(argument_types, result_is_nullable);
|
|
}
|
|
|
|
LOG(WARNING) << fmt::format("unsupported input type {} for aggregate function {}",
|
|
argument_types[0]->get_name(), name);
|
|
return nullptr;
|
|
}
|
|
|
|
void register_aggregate_function_map_agg(AggregateFunctionSimpleFactory& factory) {
|
|
factory.register_function_both("map_agg", create_aggregate_function_map_agg);
|
|
}
|
|
|
|
} // namespace doris::vectorized
|