oracle 列数据转成行

 在遇到一些字典表时出现这样的数据表：

 

想把它转成：

 那就不妨试试这个方法：

SELECT DISTINCT (SUBSTR(T.RPT_ID,
                        INSTR(T.RPT_ID, ',', 1, C.LV) + 1,
                        INSTR(T.RPT_ID, ',', 1, C.LV + 1) -
                        (INSTR(T.RPT_ID, ',', 1, C.LV) + 1))) AS XZQH,
                DLDM
  FROM (SELECT ',' || XZQH || ',' RPT_ID,
               LENGTH(XZQH || ',') - NVL(LENGTH(REPLACE(XZQH, ',')), 0) CNT,
               DLDM
          FROM TTABLE) T,
       (SELECT LEVEL LV
          FROM TTABLE
        CONNECT BY LEVEL <=
                   LENGTH(XZQH || ',') - NVL(LENGTH(REPLACE(XZQH, ',')), 0)) C
 WHERE T.CNT >= C.LV