$sqlString=
    "
    select distinct s.id s_speciality,s.name speciality,g.course,g.id s_student_group,g.group_name,g.course||'_'||g.group_name group_sort from profile_student_group g
    inner join spr_speciality s on g.s_speciality=s.id
    where g.s_faculty=:facultyId
    ";
$listData = array(
    'sqlString'   =>  $sqlString,
    'sqlParams'   =>  array(
                    ':facultyId' =>  1,
    ),
    'lists'       => array(
                            array(
                                'listName'          =>  's_speciality',
                                'columnValue'       =>  's_speciality',
                                'columnName'        =>  'speciality',
                                'columnSort'        =>  'speciality',
                                'sortDirection'     =>  'desc',
                                'includeEmptyValue' =>  false,
                                'defaultValue'      =>  '229',
                            ),
                            array(
                                'listName'          =>  'course',
                                'columnValue'       =>  'course',
                                'columnName'        =>  'course',
                                'columnSort'        =>  'course',
                                'sortDirection'     =>  'asc',
                                'includeEmptyValue' =>  true,
                                'nameForEmptyValue' =>  'Все курсы',
                                'defaultValue'      =>  '',
                            ),
                            array(
                                'listName'          =>  's_student_group',
                                'columnValue'       =>  's_student_group',
                                'columnName'        =>  'group_name',
                                'columnSort'        =>  'group_sort',
                                'sortDirection'     =>  'asc',
                                'includeEmptyValue' =>  false,
                                'defaultValue'      =>  '',
                            ),
    ),
);
$lists = getLinkedList($listData);
print_r($lists['s_speciality']['data']);
echo $lists['s_speciality']['selectedValue'];