Sql -- 练习3 递归查询

问题

解决1

SELECT ht1.teacher_no,
ht1.teacher_name,
ht1.manager_no,
ht2.teacher_name manager_name
FROM hand_teacher ht1,
hand_teacher ht2
WHERE ht1.manager_no = ht2.teacher_no(+)
START WITH ht1.teacher_name = '胡明星'
CONNECT BY PRIOR ht1.manager_no = ht1.teacher_no;

解决2

select *
from HAND_TEACHER
start with teacher_name='胡明星'
connect by teacher_no=prior manager_no

结果