`SELECT toDateTime(topKWeighted(-9223372036854775807, '-0.02')(NULL), '104857.5') FROM remote('127.0\00\0{2,3}127.0\00\0{2,3}127.0\00\0{2,3}127.0\00\0{2,3}127.0\00\0{2,3}127.0\00\0{2,3}127.0\00\0{2,3}127.0\00\0{2,3}', system.one) ORDER BY length(topK(1048577)(tuple(NULL))) ASC, '0' ASC NULLS LAST`
#pragma once
#include <IO/WriteHelpers.h>
#include <IO/ReadHelpers.h>
#include <DataTypes/DataTypeArray.h>
#include <DataTypes/DataTypesNumber.h>
#include <DataTypes/DataTypeString.h>
#include <Columns/ColumnArray.h>
#include <Common/SpaceSaving.h>
#include <Common/assert_cast.h>
#include <AggregateFunctions/IAggregateFunction.h>
namespace DB
{
struct Settings;
template <typename T>
struct AggregateFunctionTopKData
{
    using Set = SpaceSaving<T, HashCRC32<T>>;
    Set value;
};
template <typename T, bool is_weighted>
class AggregateFunctionTopK