ClickHouse/dbms/include/DB/Interpreters/AggregateDescription.h
2016-05-28 13:35:44 +03:00

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#pragma once
#include <DB/Core/ColumnNumbers.h>
#include <DB/Core/Names.h>
#include <DB/AggregateFunctions/IAggregateFunction.h>
namespace DB
{
struct AggregateDescription
{
AggregateFunctionPtr function;
Array parameters; /// Параметры (параметрической) агрегатной функции.
ColumnNumbers arguments;
Names argument_names; /// Используются, если arguments не заданы.
String column_name; /// Какое имя использовать для столбца со значениями агрегатной функции
};
using AggregateDescriptions = std::vector<AggregateDescription>;
}