关于Oracle、SqlServer 的sql递归查询

递归查询所有子节点

建人员表  hrmresource

主键     姓名   上级ID

层级关系：
- 4
      - 3
           - 2
                - 1
      - 5

• oracle

SELECT * FROM Myhrmresource
             START WITH  id=3
             CONNECT BY PRIOR id=managerid

结果：

               

• sqlserver

with result_table as 
             ( 
                 select a.id,a.name,a.managerid from myhrmresource a where id=3 
                 union all  
                 select k.id,k.name,k.managerid  from Myhrmresource k inner join result_table c on c.id = k.managerid 
              )select * from result_table

结果：