ClickHouse/src/TableFunctions/TableFunctionMySQL.h
Ivan 495c6e03aa
Replace all Context references with std::weak_ptr (#22297)
* Replace all Context references with std::weak_ptr

* Fix shared context captured by value

* Fix build

* Fix Context with named sessions

* Fix copy context

* Fix gcc build

* Merge with master and fix build

* Fix gcc-9 build
2021-04-11 02:33:54 +03:00

46 lines
1.2 KiB
C++

#pragma once
#if !defined(ARCADIA_BUILD)
# include "config_core.h"
#endif
#if USE_MYSQL
#include <TableFunctions/ITableFunction.h>
#include <mysqlxx/Pool.h>
namespace DB
{
/* mysql ('host:port', database, table, user, password) - creates a temporary StorageMySQL.
* The structure of the table is taken from the mysql query DESCRIBE table.
* If there is no such table, an exception is thrown.
*/
class TableFunctionMySQL : public ITableFunction
{
public:
static constexpr auto name = "mysql";
std::string getName() const override
{
return name;
}
private:
StoragePtr executeImpl(const ASTPtr & ast_function, ContextPtr context, const std::string & table_name, ColumnsDescription cached_columns) const override;
const char * getStorageTypeName() const override { return "MySQL"; }
ColumnsDescription getActualTableStructure(ContextPtr context) const override;
void parseArguments(const ASTPtr & ast_function, ContextPtr context) override;
String remote_database_name;
String remote_table_name;
String user_name;
String password;
bool replace_query = false;
String on_duplicate_clause;
mutable std::optional<mysqlxx::PoolWithFailover> pool;
};
}
#endif