ClickHouse/src/Storages/System/StorageSystemMergeTreeSettings.h
2020-04-03 18:14:31 +03:00

31 lines
869 B
C++

#pragma once
#include <ext/shared_ptr_helper.h>
#include <Storages/MergeTree/MergeTreeSettings.h>
#include <Storages/System/IStorageSystemOneBlock.h>
namespace DB
{
class Context;
/** implements system table "merge_tree_settings", which allows to get information about the current MergeTree settings.
*/
class SystemMergeTreeSettings final : public ext::shared_ptr_helper<SystemMergeTreeSettings>, public IStorageSystemOneBlock<SystemMergeTreeSettings>
{
friend struct ext::shared_ptr_helper<SystemMergeTreeSettings>;
public:
std::string getName() const override { return "SystemMergeTreeSettings"; }
static NamesAndTypesList getNamesAndTypes();
protected:
using IStorageSystemOneBlock::IStorageSystemOneBlock;
void fillData(MutableColumns & res_columns, const Context & context, const SelectQueryInfo & query_info) const override;
};
}