---- 向上遞歸
select distinct orgguid,dtb_orgguid,orgname
from dtba_organization a
start with orgguid = '2117bc0897e543168fd9702216165c77'
connect by prior dtb_orgguid = orgguid
orgguid 最小級別
---- 向下遞歸
select distinct orgguid,dtb_orgguid,orgname
from dtba_organization a
start with dtb_orgguid = '5ca832cb82ed487d9b946890692529fe'
connect by prior orgguid = dtb_orgguid
dtb_orgguid 最大級別
--查詢全部資源信息
select * from urm_class_info
--向上遍歷樹，找到路徑直到根節點，指定的是parentid
select distinct classid,parentid,name
from urm_class_info
start with parentid = 'cmdb0000000000000017'
connect by prior parentid = classid
--向上遍歷樹，找到路徑直到根節點，指定的是classid，和下面的主要區別就是parentid和classid的位置
select classid,parentid,name
from urm_class_info
start with classid = 'cmdb0000000000000401'
connect by prior parentid = classid
--向下遍歷整棵樹，可以指定classid，來遍歷指定節點的樹
select classid,parentid,name
from urm_class_info
start with classid = 'cmdb0000000000000017'
connect by prior classid = parentid
--向下遍歷整棵樹，可以指定parentid，來遍歷指定parentid節點的樹，不包含parentid
select classid,parentid,name
from urm_class_info
start with parentid = 'cmdb0000000000000017'
connect by prior classid = parentid
