1 | #pragma once |
---|---|
2 | |
3 | #include <ext/shared_ptr_helper.h> |
4 | #include <Storages/System/IStorageSystemOneBlock.h> |
5 | |
6 | |
7 | namespace DB |
8 | { |
9 | |
10 | class Context; |
11 | |
12 | |
13 | /** implements system table "settings", which allows to get information about the current settings. |
14 | */ |
15 | class StorageSystemSettings : public ext::shared_ptr_helper<StorageSystemSettings>, public IStorageSystemOneBlock<StorageSystemSettings> |
16 | { |
17 | friend struct ext::shared_ptr_helper<StorageSystemSettings>; |
18 | public: |
19 | std::string getName() const override { return "SystemSettings"; } |
20 | |
21 | static NamesAndTypesList getNamesAndTypes(); |
22 | |
23 | protected: |
24 | using IStorageSystemOneBlock::IStorageSystemOneBlock; |
25 | |
26 | void fillData(MutableColumns & res_columns, const Context & context, const SelectQueryInfo & query_info) const override; |
27 | }; |
28 | |
29 | } |
30 |