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Oracle 向上递归、向下递归
---- 向上递归
select distinct orgguid,dtb_orgguid,orgname from dtba_organization a start with orgguid = ‘2117bc0897e543168fd9702216165c77‘ connect by prior dtb_orgguid = orgguid
orgguid 最小级别
---- 向下递归select distinct orgguid,dtb_orgguid,orgname from dtba_organization a start with dtb_orgguid = ‘5ca832cb82ed487d9b946890692529fe‘
connect by prior orgguid = dtb_orgguid
dtb_orgguid 最大级别
--查询全部资源信息 select * from urm_class_info --向上遍历树,找到路径直到根节点,指定的是parentid select distinct classid,parentid,name from urm_class_info start with parentid = ‘cmdb0000000000000017‘ connect by prior parentid = classid --向上遍历树,找到路径直到根节点,指定的是classid,和下面的主要区别就是parentid和classid的位置 select classid,parentid,name from urm_class_info start with classid = ‘cmdb0000000000000401‘ connect by prior parentid = classid --向下遍历整棵树,可以指定classid,来遍历指定节点的树 select classid,parentid,name from urm_class_info start with classid = ‘cmdb0000000000000017‘ connect by prior classid = parentid --向下遍历整棵树,可以指定parentid,来遍历指定parentid节点的树,不包含parentid select classid,parentid,name from urm_class_info start with parentid = ‘cmdb0000000000000017‘ connect by prior classid = parentid
Oracle 向上递归、向下递归
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