Multiple rows into single pipe delimited row ........

Question

Hi All
I have the following data in multiple columns which needs to be converted into single pipedelimited row.
Followinf is the example:
DEPTNO ENAME
===== =====
10 A
10 B
10 C
Now my requirement is in output i should be able to display A|B|C|.........
Note : The number of rows for any DEPTNO are not constant.
Thanks,
kalyan Kumar P

Answer 1

Hi,
I tried but it is not throwing error that "Invalid Identifier" and moreover you told it is undocumentes
please tell me what i need to do to to make "wm_concat" work.If there is any alternate also please let me know.In your database WMSYS user is not created that is why you are not getting 'wm_concat' function.
Create WM_CONCAT function with this
CREATE OR REPLACE TYPE BODY wm_concat
IS
   STATIC FUNCTION odciaggregateinitialize (sctx IN OUT wm_concat)
      RETURN number
   IS
   BEGIN
      sctx :=   wm_concat (NULL);
      RETURN odciconst.success;
   END;
   MEMBER FUNCTION odciaggregateiterate (self IN OUT wm_concat, p1 IN varchar2)
      RETURN number
   IS
   BEGIN
      IF (curr_str IS NOT NULL)
      THEN
         curr_str :=   curr_str || ' , ' || p1;
      ELSE
         curr_str :=   p1;
      END IF;
      RETURN odciconst.success;
   END;
   MEMBER FUNCTION odciaggregateterminate (self IN wm_concat, returnvalue OUT varchar2, flags IN number)
      RETURN number
   IS
   BEGIN
      returnvalue :=   curr_str;
      RETURN odciconst.success;
   END;
   MEMBER FUNCTION odciaggregatemerge (self IN OUT wm_concat, sctx2 IN wm_concat)
      RETURN number
   IS
   BEGIN
      IF (sctx2.curr_str IS NOT NULL)
      THEN
         self.curr_str :=   self.curr_str || ' , ' || sctx2.curr_str;
      END IF;
      RETURN odciconst.success;
   END;
END;
CREATE OR REPLACE FUNCTION wm_concat (p1 varchar2)
   RETURN varchar2
   AGGREGATE USING wm_concat;
   After creating this function try this query
SELECT REPLACE (wm_concat (ename), ',', '|') ename FROM emp;Let me know if problem persist.
Regards,
Mahesh Kaila