How to identify the special characters

Hi all,
is there any way to identify all the special characters that are already in the various columns of a table,
thanks
db is on 8i
Edited by: venkata_sudheer on Apr 3, 2009 8:44 AM

Hello,
I don't know what's your requriment is and how do you want to handle or treat these special characters but check this function, you can pass special character and it will return back the number or you can extend this function to do the reverse (chr(37) 37=%).
CREATE OR REPLACE FUNCTION ascii_only (p_txt IN VARCHAR2)
   RETURN VARCHAR2
IS
   v_number   NUMBER;
   v_char     VARCHAR2 (3 BYTE);
BEGIN
   v_char := SUBSTR (p_txt, 1, 1);
   v_number := (ASCII (v_char));
   DBMS_OUTPUT.put_line (v_number || ':' || v_char);
   RETURN v_number;
END;
/Regards

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