Missing file name in the sequence

Question

Hi All,
I have struck with the problem which is finding the missing file name in the file_name column. This column also have sequence.
FAX_NAME RECEIVED SENDER FAX_SIZE
fax[phone].tif 01-JAN-07 redro 10k
fax[phone].tif 01-JAN-07 redro 10k
fax[phone].tif 01-JAN-07 redro 10k
fax[phone].tif 01-JAN-07 redro 10k
fax[phone].tif 01-JAN-07 redro 10k
                              One file name missing
fax[phone].tif 01-JAN-07 redro 10k
fax[phone].tif 02-JAN-07 redro 10k
fax[phone].tif 02-JAN-07 redro 10k
fax[phone].tif 02-JAN-07 redro 10k
fax[phone].tif 02-JAN-07 redro 10k
fax[phone].tif 02-JAN-07 redro 10k
fax[phone].tif 02-JAN-07 redro 10k
fax[phone].tif 02-JAN-07 redro 10k
fax[phone].tif 02-JAN-07 redro 10k
fax[phone].tif 02-JAN-07 redro 10k
fax[phone].tif 02-JAN-07 redro 10k
fax[phone].tif 02-JAN-07 redro 10k
Here i want to retrive the Faxname(fax[phone]) which is missing
The output like..
I've Designed one BIRT rptdesign for this this in the bellow formate..
FAX_NAME RECEIVED SENDER FAX_SIZE     Missing_Faxes
I've tried with bellow query but i did't get.
select Fax_Name digits from(select min(digits) MN from (select translate(s, '0' || translate(s, '1234567890', ' '), '0') digits 7 from (select filename s from received_faxes))) connect by level8 minus select distinct digits from (select translate(s, '0' || translate(s, '1234567890', ' '), '0') digits 10 from (select filename s from received_faxes))
Could you pls help me..

Answer 1

This?
SQL> with t1 as
  2  (select 'fax[phone].tif' nam from dual union
  3  select 'fax[phone].tif' from dual union
  4  select 'fax[phone].tif' from dual union
  5  select 'fax[phone].tif' from dual union
  6  select 'fax[phone].tif' from dual union
  7  select 'fax[phone].tif' from dual union
  8  select 'fax[phone].tif' from dual union
  9  select 'fax[phone].tif' from dual),
10  t2 as
11  (select to_number(mid(nam,4,9)) faxno from t1),
12  t3 as
13  (select max(faxno) ma, min(faxno) mi from t2)
14  select (mi+level - 1) faxno from t3 connect by level <= ma - mi + 1
15  minus
16  select faxno from t2
17  ;
     FAXNO
       438
SQL>