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 the `mutations` system table, which provides information about the status of mutations |
14 | /// in the MergeTree tables. |
15 | class StorageSystemMutations : public ext::shared_ptr_helper<StorageSystemMutations>, public IStorageSystemOneBlock<StorageSystemMutations> |
16 | { |
17 | friend struct ext::shared_ptr_helper<StorageSystemMutations>; |
18 | public: |
19 | String getName() const override { return "SystemMutations"; } |
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 |