protected function _insert_batch($table, $keys, $values)
	{
		// Multiple-value inserts are only supported as of SQL Server 2008
		if (version_compare($this->version(), '10', '>='))
		{
			return parent::_insert_batch($table, $keys, $values);
		}

		return ($this->db->db_debug) ? $this->db->display_error('db_unsupported_feature') : FALSE;
	}