return $this->fetchAll(
            $this->select
                ->from(array('p' => $this->_name), array(
                'privilegeId' => 'p.id',
                'resources' => new Zend_Db_Expr("GROUP_CONCAT(CONCAT_WS('-', re.id, re.name) SEPARATOR ',')")
                    )
                )
                ->join(array('re' => 'resource'), 're.id = p.resource', array(''))
                ->join(array('ro' => 'role'), 'ro.id = p.role', array('roleId' => 'ro.id', 'roleName' => 'ro.name'))
                ->order('p.id ASC')
                ->group('ro.name')
    );