public function select($table)
	{
		$props = call_user_func(array($this->model_to, 'properties'));
		$i = 0;
		$properties = array();
		foreach ($props as $pk => $pv)
		{
			$properties[] = array($table.'.'.$pk, $table.'_c'.$i);
			$i++;
		}

		return $properties;
	}