public function fetchSingle(){
		$this->performed || $this->run();
		$row = $this->connection->getDriver()->fetch($this->resultSet);

		if(!$row)
			return false;
		$value = reset($row);

		// Type converting
		if($this->detectTypes)
			$this->detectTypes();
		if(!empty($this->columnTypes)){
			$key = key($row);
			if(isset($this->columnTypes[$key]))
				$value = $this->convertType($value, $this->columnTypes[$key]);
		}

		return $value;
	}