ClickHouse/src/Storages/System/StorageSystemProcesses.h
2021-06-16 23:28:41 +03:00

30 lines
799 B
C++

#pragma once
#include <common/shared_ptr_helper.h>
#include <Storages/System/IStorageSystemOneBlock.h>
namespace DB
{
class Context;
/** Implements `processes` system table, which allows you to get information about the queries that are currently executing.
*/
class StorageSystemProcesses final : public shared_ptr_helper<StorageSystemProcesses>, public IStorageSystemOneBlock<StorageSystemProcesses>
{
friend struct shared_ptr_helper<StorageSystemProcesses>;
public:
std::string getName() const override { return "SystemProcesses"; }
static NamesAndTypesList getNamesAndTypes();
protected:
using IStorageSystemOneBlock::IStorageSystemOneBlock;
void fillData(MutableColumns & res_columns, ContextPtr context, const SelectQueryInfo & query_info) const override;
};
}