转载自:http://lizhen3708693.iteye.com/blog/1631184
–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,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,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,name from urm_class_info start with parentid = ‘cmdb0000000000000017’ connect by prior classid = parentid
相关分页关联查询示例:
select * from ( select t.*,rownum rn from ( select a.*,b.name as classname from T_DBSET a left join t_dbclass b on a.classid=b.id where a.classId in( select id from t_dbclass start with id = 'fddbfb7b898544aab4dd9840b8cc46bc' connect by prior id = fartherid ) ) t ) where rn >0 and rn<=30 (编辑:李大同)
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