mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-10-19 06:50:50 +00:00
118 lines
5.2 KiB
C++
118 lines
5.2 KiB
C++
#include <DB/AggregateFunctions/AggregateFunctionFactory.h>
|
|
#include <DB/AggregateFunctions/AggregateFunctionUniq.h>
|
|
#include <DB/AggregateFunctions/Helpers.h>
|
|
|
|
namespace DB
|
|
{
|
|
|
|
namespace
|
|
{
|
|
|
|
/** `DataForVariadic` is a data structure that will be used for `uniq` aggregate function of multiple arguments.
|
|
* It differs, for example, in that it uses a trivial hash function, since `uniq` of many arguments first hashes them out itself.
|
|
*/
|
|
|
|
template <typename Data, typename DataForVariadic>
|
|
AggregateFunctionPtr createAggregateFunctionUniq(const std::string & name, const DataTypes & argument_types)
|
|
{
|
|
if (argument_types.size() == 1)
|
|
{
|
|
const IDataType & argument_type = *argument_types[0];
|
|
|
|
AggregateFunctionPtr res(createWithNumericType<AggregateFunctionUniq, Data>(*argument_types[0]));
|
|
|
|
if (res)
|
|
return res;
|
|
else if (typeid_cast<const DataTypeDate *>(&argument_type))
|
|
return std::make_shared<AggregateFunctionUniq<DataTypeDate::FieldType, Data>>();
|
|
else if (typeid_cast<const DataTypeDateTime *>(&argument_type))
|
|
return std::make_shared<AggregateFunctionUniq<DataTypeDateTime::FieldType, Data>>();
|
|
else if (typeid_cast<const DataTypeString *>(&argument_type) || typeid_cast<const DataTypeFixedString *>(&argument_type))
|
|
return std::make_shared<AggregateFunctionUniq<String, Data>>();
|
|
else if (typeid_cast<const DataTypeTuple *>(&argument_type))
|
|
return std::make_shared<AggregateFunctionUniqVariadic<DataForVariadic, true>>();
|
|
else
|
|
throw Exception("Illegal type " + argument_types[0]->getName() + " of argument for aggregate function " + name,
|
|
ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT);
|
|
}
|
|
else if (argument_types.size() > 1)
|
|
{
|
|
/// If there are several arguments, then no tuples allowed among them.
|
|
for (const auto & type : argument_types)
|
|
if (typeid_cast<const DataTypeTuple *>(type.get()))
|
|
throw Exception("Tuple argument of function " + name + " must be the only argument",
|
|
ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT);
|
|
|
|
return std::make_shared<AggregateFunctionUniqVariadic<DataForVariadic, false>>();
|
|
}
|
|
else
|
|
throw Exception("Incorrect number of arguments for aggregate function " + name,
|
|
ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH);
|
|
}
|
|
|
|
template <template <typename> class Data, typename DataForVariadic>
|
|
AggregateFunctionPtr createAggregateFunctionUniq(const std::string & name, const DataTypes & argument_types)
|
|
{
|
|
if (argument_types.size() == 1)
|
|
{
|
|
const IDataType & argument_type = *argument_types[0];
|
|
|
|
AggregateFunctionPtr res(createWithNumericType<AggregateFunctionUniq, Data>(*argument_types[0]));
|
|
|
|
if (res)
|
|
return res;
|
|
else if (typeid_cast<const DataTypeDate *>(&argument_type))
|
|
return std::make_shared<AggregateFunctionUniq<DataTypeDate::FieldType, Data<DataTypeDate::FieldType>>>();
|
|
else if (typeid_cast<const DataTypeDateTime *>(&argument_type))
|
|
return std::make_shared<AggregateFunctionUniq<DataTypeDateTime::FieldType, Data<DataTypeDateTime::FieldType>>>();
|
|
else if (typeid_cast<const DataTypeString *>(&argument_type) || typeid_cast<const DataTypeFixedString *>(&argument_type))
|
|
return std::make_shared<AggregateFunctionUniq<String, Data<String>>>();
|
|
else if (typeid_cast<const DataTypeTuple *>(&argument_type))
|
|
return std::make_shared<AggregateFunctionUniqVariadic<DataForVariadic, true>>();
|
|
else
|
|
throw Exception("Illegal type " + argument_types[0]->getName() + " of argument for aggregate function " + name,
|
|
ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT);
|
|
}
|
|
else if (argument_types.size() > 1)
|
|
{
|
|
/// If there are several arguments, then no tuples allowed among them.
|
|
for (const auto & type : argument_types)
|
|
if (typeid_cast<const DataTypeTuple *>(type.get()))
|
|
throw Exception("Tuple argument of function " + name + " must be the only argument",
|
|
ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT);
|
|
|
|
return std::make_shared<AggregateFunctionUniqVariadic<DataForVariadic, false>>();
|
|
}
|
|
else
|
|
throw Exception("Incorrect number of arguments for aggregate function " + name,
|
|
ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH);
|
|
}
|
|
|
|
}
|
|
|
|
void registerAggregateFunctionsUniq(AggregateFunctionFactory & factory)
|
|
{
|
|
factory.registerFunction("uniq",
|
|
createAggregateFunctionUniq<AggregateFunctionUniqUniquesHashSetData, AggregateFunctionUniqUniquesHashSetDataForVariadic>);
|
|
|
|
factory.registerFunction("uniqHLL12",
|
|
createAggregateFunctionUniq<AggregateFunctionUniqHLL12Data, AggregateFunctionUniqHLL12DataForVariadic>);
|
|
|
|
factory.registerFunction("uniqExact",
|
|
createAggregateFunctionUniq<AggregateFunctionUniqExactData, AggregateFunctionUniqExactData<String>>);
|
|
|
|
factory.registerFunction("uniqCombinedRaw",
|
|
createAggregateFunctionUniq<AggregateFunctionUniqCombinedRawData, AggregateFunctionUniqCombinedRawData<UInt64>>);
|
|
|
|
factory.registerFunction("uniqCombinedLinearCounting",
|
|
createAggregateFunctionUniq<AggregateFunctionUniqCombinedLinearCountingData, AggregateFunctionUniqCombinedLinearCountingData<UInt64>>);
|
|
|
|
factory.registerFunction("uniqCombinedBiasCorrected",
|
|
createAggregateFunctionUniq<AggregateFunctionUniqCombinedBiasCorrectedData, AggregateFunctionUniqCombinedBiasCorrectedData<UInt64>>);
|
|
|
|
factory.registerFunction("uniqCombined",
|
|
createAggregateFunctionUniq<AggregateFunctionUniqCombinedData, AggregateFunctionUniqCombinedData<UInt64>>);
|
|
}
|
|
|
|
}
|