oracleCONNECTBYPRIOR葉子節(jié)點查找根節(jié)點

字號:


    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(jié)點
    TRANS_ID子節(jié)點
    UP_TRANS_ID父節(jié)點