WITH RECURSIVE t1 AS
(
SELECT mb_no, mb_name, mb_level, mb_recommend, mb_point
     , 0 lv
     , CAST(mb_name AS VARCHAR(200)) AS mb_name_list
  FROM t
 WHERE mb_recommend IS NULL
 UNION ALL
SELECT c.mb_no, c.mb_name, c.mb_level, c.mb_recommend, c.mb_point
     , p.lv + 1 lv
     , CONCAT(p.mb_name_list, '-', c.mb_name) AS mb_name_list
  FROM t1 p
 INNER JOIN t c
    ON p.mb_name = c.mb_recommend
)
SELECT CASE lv WHEN 0 THEN mb_name WHEN 1 THEN 'ㄴ' END lv0
     , CASE lv WHEN 1 THEN mb_name WHEN 2 THEN 'ㄴ' END lv1
     , CASE lv WHEN 2 THEN mb_name WHEN 3 THEN 'ㄴ' END lv2
     , CASE lv WHEN 3 THEN mb_name WHEN 4 THEN 'ㄴ' END lv3
     , mb_point
  FROM t1
 ORDER BY mb_name_list
;