模擬數據如下:
查找21下管理的id:
Select *
from prpstest T
start with T.ID = '21'
connect by prior T.Id = T.PARENTID
;--查找21下管理的id
效果如下
查找21010101父級及祖先信息
Select *
from prpstest T
start with T.ID = '21010101'
connect by nocycle prior T.PARENTID = T.ID;
效果如下