ClickHouse/dbms/src/TableFunctions/TableFunctionMerge.h
2019-07-18 21:29:49 +03:00

24 lines
602 B
C++

#pragma once
#include <TableFunctions/ITableFunction.h>
namespace DB
{
/* merge (db_name, tables_regexp) - creates a temporary StorageMerge.
* The structure of the table is taken from the first table that came up, suitable for regexp.
* If there is no such table, an exception is thrown.
*/
class TableFunctionMerge : public ITableFunction
{
public:
static constexpr auto name = "merge";
std::string getName() const override { return name; }
private:
StoragePtr executeImpl(const ASTPtr & ast_function, const Context & context, const std::string & table_name) const override;
};
}