Edit data in single row

Question

I'm busy re-oredering data.
I have the follwing problem:
I've a column with data that must become unique, but there are values that occur more than once. I've to append 0, 1,2, etc to these values in order to make the values unique.
eg.
[b]Current situation
aplha
alpha
alpha
Desired
alpha1
alpha2
alpha3
how can I realize this in PL/SQL? tnx in advance.

Answer 1

Similar:
SQL> INSERT INTO emp
   SELECT 9999 empno,
          ename,
          job,
          mgr,
          hiredate,
          sal,
          comm,
          40 deptno
     FROM emp
    WHERE empno = 7788
1 row created.
SQL> SELECT deptno,
       deptno || DECODE (cnt, 1, NULL, rn) new_deptno
  FROM (SELECT deptno,
               ROW_NUMBER () OVER (PARTITION BY deptno ORDER BY deptno) rn,
               COUNT (*) OVER (PARTITION BY deptno) cnt
          FROM emp)
    DEPTNO NEW_D
        10 101 
        10 102 
        10 103 
        20 201 
        20 202 
        20 203 
        20 204 
        20 205 
        30 301 
        30 302 
        30 303 
        30 304 
        30 305 
        30 306 
        40 40  
15 rows selected.