mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-12 17:32:32 +00:00
45 lines
1.0 KiB
C++
45 lines
1.0 KiB
C++
#include <AggregateFunctions/AggregateFunctionFactory.h>
|
|
#include <AggregateFunctions/CrossTab.h>
|
|
#include <AggregateFunctions/FactoryHelpers.h>
|
|
#include <memory>
|
|
#include <cmath>
|
|
|
|
|
|
namespace DB
|
|
{
|
|
|
|
namespace
|
|
{
|
|
|
|
struct CramersVData : CrossTabData
|
|
{
|
|
static const char * getName()
|
|
{
|
|
return "cramersV";
|
|
}
|
|
|
|
Float64 getResult() const
|
|
{
|
|
if (count < 2)
|
|
return std::numeric_limits<Float64>::quiet_NaN();
|
|
|
|
UInt64 q = std::min(count_a.size(), count_b.size());
|
|
return sqrt(getPhiSquared() / (q - 1));
|
|
}
|
|
};
|
|
|
|
}
|
|
|
|
void registerAggregateFunctionCramersV(AggregateFunctionFactory & factory)
|
|
{
|
|
factory.registerFunction(CramersVData::getName(),
|
|
[](const std::string & name, const DataTypes & argument_types, const Array & parameters, const Settings *)
|
|
{
|
|
assertBinary(name, argument_types);
|
|
assertNoParameters(name, parameters);
|
|
return std::make_shared<AggregateFunctionCrossTab<CramersVData>>(argument_types);
|
|
});
|
|
}
|
|
|
|
}
|