1 | #pragma once |
2 | |
3 | #include <TableFunctions/ITableFunction.h> |
4 | |
5 | |
6 | namespace DB |
7 | { |
8 | |
9 | /* merge (db_name, tables_regexp) - creates a temporary StorageMerge. |
10 | * The structure of the table is taken from the first table that came up, suitable for regexp. |
11 | * If there is no such table, an exception is thrown. |
12 | */ |
13 | class TableFunctionMerge : public ITableFunction |
14 | { |
15 | public: |
16 | static constexpr auto name = "merge" ; |
17 | std::string getName() const override { return name; } |
18 | private: |
19 | StoragePtr executeImpl(const ASTPtr & ast_function, const Context & context, const std::string & table_name) const override; |
20 | }; |
21 | |
22 | |
23 | } |
24 | |