Oracel递归统计节点叶子节点

Oracel递归统计节点叶子节点

需求:
数据库表中直接根据根节点的id统计它有多少叶子节点(即最底层的节点)
数据库表中直接根据根节点的id统计它有多少子节点(包括子节点和子节点的子节点)

SQL:

 with treeNode as 
   (select sys_connect_by_path(label, '>') path, level deep, t.* 
      from tmp t 
     start with t.xxzjbh = '1111111' 
    connect by prior xxzjbh = parentId) 
  select t.xxzjbh, 
  (select count(1) from treeNode k where k.xxzjbh != t.xxzjbh start with k.xxzjbh = t.xxzjbh connect by prior xxzjbh = parentId ) zl_count, 
  (select count(1) from treeNode k where k.xxzjbh != t.xxzjbh start with k.xxzjbh = t.xxzjbh connect by prior xxzjbh = parentId  ) bq_count 
    from treeNode t 
     where t.parentid = '1111111'