oracle 递归 树查找

-- 查询（oracle自带递归）

SELECT DEPT_ID, DEPT_NAME,SUPER_DEPT_ID FROM system_dept

where

connect_by_isleaf=1 -- 只选叶子节点

START WITH DEPT_ID in(

select a.object_id from system_role_object a,(select role_id from system_role where role_name='组织单位') b

where a.role_id=b.role_id and a.object_type='d'

)

CONNECT BY prior DEPT_ID = SUPER_DEPT_ID

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