MultiRemoteExecutor();

~MultiRemoteExecutor() override;

void add_backend(const BackendConfig& config);

ResultSet execute(const char* backend_name, sql_parser::StringRef sql) override;

DmlResult execute_dml(const char* backend_name, sql_parser::StringRef sql) override;

bool allows_unpinned_distributed_2pc() const override;

void disconnect_all();

MySQLRemoteExecutor mysql_exec_;

PgSQLRemoteExecutor pgsql_exec_;

std::unordered_map<std::string, sql_parser::Dialect> backend_dialects_;