ClickHouse/dbms/src/Functions/toStartOfYear.cpp

#include <Functions/IFunction.h>
#include <Functions/FunctionFactory.h>
#include <Functions/DateTimeTransforms.h>
#include <Functions/FunctionDateOrDateTimeToSomething.h>
#include <DataTypes/DataTypesNumber.h>


namespace DB
{

using FunctionToStartOfYear = FunctionDateOrDateTimeToSomething<DataTypeDate, ToStartOfYearImpl>;

void registerFunctionToStartOfYear(FunctionFactory & factory)
{
    factory.registerFunction<FunctionToStartOfYear>();
}

}