SELECT TRANS_ID

　　FROM TRANS_INST

　　WHERE connect_by_isleaf=1

　　START WITH TRANS_ID =480242

　　CONNECT BY PRIOR UP_TRANS_ID = TRANS_ID;

　　說明：

　　表TRANS_INST(TRANS_ID，UP_TRANS_ID)

　　480242表示樹的任何一個節點

　　TRANS_ID子節點

　　UP_TRANS_ID父節點