oracle樹結構查詢

1.根據父節點遞歸查詢全部子節點

SELECT distinct LPAD('',2*(LEVEL - 1),'')||ORGCODE AS organCode,

　　PARENT_CODE AS panrentCode

　　FROM t_organ

　　START WITH ORGCODE =父節點編碼

　　CONNECT BY PARENT_CODE = PRIOR ORGCODE ;

2.根據子節點遞歸查詢全部父節點

 

SELECT distinct LPAD('',2*(LEVEL - 1),'')||ORGCODE AS organCode,

 

　　PARENT_CODE AS panrentCode

 

　　FROM t_organ

 

　　START WITH ORGCODE =父節點編碼

 

　　CONNECT BY PRIOR PARENT_CODE =  ORGCODE ;