mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-16 03:12:43 +00:00
32 lines
942 B
C++
32 lines
942 B
C++
#pragma once
|
|
|
|
#include <Storages/System/IStorageSystemOneBlock.h>
|
|
|
|
|
|
namespace DB
|
|
{
|
|
|
|
class Context;
|
|
|
|
|
|
/** Implements `functions`system table, which allows you to get a list
|
|
* all normal and aggregate functions.
|
|
*/
|
|
class StorageSystemFunctions final : public IStorageSystemOneBlock<StorageSystemFunctions>
|
|
{
|
|
public:
|
|
std::string getName() const override { return "SystemFunctions"; }
|
|
|
|
static NamesAndTypesList getNamesAndTypes();
|
|
|
|
void backupData(BackupEntriesCollector & backup_entries_collector, const String & data_path_in_backup, const std::optional<ASTs> & partitions) override;
|
|
void restoreDataFromBackup(RestorerFromBackup & restorer, const String & data_path_in_backup, const std::optional<ASTs> & partitions) override;
|
|
|
|
protected:
|
|
using IStorageSystemOneBlock::IStorageSystemOneBlock;
|
|
|
|
void fillData(MutableColumns & res_columns, ContextPtr context, const SelectQueryInfo & query_info) const override;
|
|
};
|
|
|
|
}
|