How to concat columns from more than one record?

Question

I have a function that takes an Oracle long and returns it as a varchar so that I can use it in the Microsoft world. My problem is that the SELECT returns more than one row (which is valid) and I need the Long fields to be concatenated into the one varchar returned. Currently I get an error saying more than one record is returned. This is my function:
CREATE or replace function m4owner.Get_Request_Text
(av_REQUEST_ID varchar2, av_REQUEST_LINE number, av_TEXT_LINE_CODE varchar2)
RETURN varchar2
IS
long_var LONG;
BEGIN
SELECT TEXT INTO long_var
FROM M4OWNER.REQUEST_TEXT
WHERE REQUEST_ID = av_REQUEST_ID
AND REQUEST_LINE = av_REQUEST_LINE
AND TEXT_LINE_CODE = av_TEXT_LINE_CODE;
return long_var;
END;

Answer 1

  CREATE or replace function m4owner.Get_Request_Text (av_REQUEST_ID varchar2,
                                                       av_REQUEST_LINE number,
                                                       av_TEXT_LINE_CODE varchar2) RETURN varchar2 IS
    long_var LONG;
  BEGIN
    for t1 in  (SELECT TEXT FROM M4OWNER.REQUEST_TEXT
                 WHERE REQUEST_ID = av_REQUEST_ID
                   AND REQUEST_LINE = av_REQUEST_LINE
                   AND TEXT_LINE_CODE = av_TEXT_LINE_CODE) loop
      long_var := long_var || t1.text;
    end loop
    return long_var;
  END; note: untested