以下为引用的内容：

2014,00000001,00000005

2014,00000009,00000007

2013,00000120,00000122

2013,00000124,00000125

下面是一个很巧妙的解决方法:

SQL> SELECT b.fphm, MIN (b.kshm) Start_HM, MAX (b.kshm) End_HM

2 FROM (SELECT a.*, TO_NUMBER (a.kshm - ROWNUM) cc

3 FROM (SELECT *

4 FROM t

5 ORDER BY fphm, kshm) a) b

6 GROUP BY b.fphm, b.cc

7 /

FPHM START_HM END_HM

---------- -------- --------

2013 00000120 00000122

2013 00000124 00000125

2014 00000001 00000005

2014 00000007 00000009