How to include my country code in the begging of every contact

Question

Dear all,
i have phone contacts in a table with 13000 records, i want to update them and include my country code (968) in the beggining of every phone number.
the length of our phone numbers are 8 charracter excluding country. like a typical phone number is below
92752155
i want to include 968 in the begging
96892752155
problem is that some numbers are short than 8 charachters, some are long then 8 characters (wrong data entry).
i want to update only those numbers which have 8 character length, and dont have the 968 in the begging.
how could i do that?
i am using oracle 10g on windows 2003 server.
thank you.

Answer 1

think????
SQL> with dat as
  2  (
  3  select '92752155' ph from dual
  4  union all
  5  select '9275215' ph from dual
  6  union all
  7  select '927521550' ph from dual
  8  union all
  9  select '96852155' ph from dual
10  )
11  select '968'||ph ph from dat
12  where length(ph) = 8;
PH
96892752155
96896852155
SQL> with dat as
  2  (
  3  select '92752155' ph from dual
  4  union all
  5  select '9275215' ph from dual
  6  union all
  7  select '927521550' ph from dual
  8  union all
  9  select '96852155' ph from dual
10  )
11  select '968'||ph ph from dat
12  where (length(ph) = 8 and ph not like '968%');
PH
96892752155
Just have a look at the result and tell me how you THINK that it is correct!
Regards,
Jagdeep Sangwan