ClickHouse/dbms/include/DB/Storages/ColumnsDescription.h

29 lines
535 B
C++

#pragma once
#include <DB/Storages/ColumnDefault.h>
#include <DB/Core/NamesAndTypes.h>
namespace DB
{
template <bool store>
struct ColumnsDescription
{
template <typename T>
using by_value_or_cref = typename std::conditional<store, T, const T &>::type;
by_value_or_cref<NamesAndTypesList> columns;
by_value_or_cref<NamesAndTypesList> materialized;
by_value_or_cref<NamesAndTypesList> alias;
by_value_or_cref<ColumnDefaults> defaults;
String toString() const;
static ColumnsDescription parse(const String & str);
};
}