Display Values Based on Flag

Question

version oracle 10g
hi i have a template in a variable and i need to show or hide some lables based on some values.
i have an example below .copying the output of the below example.
i have many lables which i need to show or hide based on the label values. please let me know the solution..
/* Formatted on 2010/07/08 20:50 (Formatter Plus v4.8.8) */
set serveroutput on;
DECLARE
   v_content   VARCHAR2 (4000);
   v_mflag      VARCHAR2 (1)    := 'N';
   v_cflag      VARCHAR2 (1)    := 'Y';
   v_template   varchar2(4000)   :=
                                       'Date            :mail_dt
                                        Dear            :cust_name
                                        Request Number  :vzb_track_no
                                        Order Number    :ord_no
                                        Order Activity  :ord_activity
                                        Product         :prduct
                                        Managed         :managed
                                        Cpe             :cpe_ord';
BEGIN
   v_content := replace(replace(replace(replace(replace(replace(replace(replace(v_template,
            ':mail_dt',sysdate),
            ':cust_name','Steven'),
            ':vzb_track_no','ABC123'),
            ':ord_no','XYZLKJHGVC'),
            ':ord_activity','Assigned'),
            ':prduct','Phone'),
            ':managed',v_mflag),
            ':cpe_ord',v_cflag);
            dbms_output.put_line(substr(v_content,1,254));
            dbms_output.put_line(substr(v_content,255,499));
END;Out put
Date                    08-JUL-10
Dear                    Steven
Request Number   ABC123
Order Number      XYZLKJHGVC
Order Activity      Assigned
Product              Phone
Managed            N    -- i dont need this row
Cpe                   Y        

Answer 1

new learner wrote:
Out put
Date                    08-JUL-10
Dear                    Steven
Request Number   ABC123
Order Number      XYZLKJHGVC
Order Activity      Assigned
Product              Phone
Managed            N    -- i dont need this row
Cpe                   Y        
You can strip the row prior to the REPLACE statements;
DECLARE
   v_content   VARCHAR2 (4000);
   v_mflag      VARCHAR2 (1)    := 'N';
   v_cflag      VARCHAR2 (1)    := 'Y';
   v_template   varchar2(4000)   :=
'Date            :mail_dt
Dear            :cust_name
Request Number  :vzb_track_no
Order Number    :ord_no
Order Activity  :ord_activity
Product         :prduct
Managed         :managed
Cpe             :cpe_ord';
BEGIN
   if v_mflag = 'N' then
     v_template := regexp_replace(v_template,chr(10)||'.*:managed');
   end if;
   v_content := replace(replace(replace(replace(replace(replace(replace(replace(v_template,
            ':mail_dt',sysdate),
            ':cust_name','Steven'),
            ':vzb_track_no','ABC123'),
            ':ord_no','XYZLKJHGVC'),
            ':ord_activity','Assigned'),
            ':prduct','Phone'),
            ':managed',v_mflag),
            ':cpe_ord',v_cflag);
   dbms_output.put_line(v_content);
END;
Date            10-07-08
Dear            Steven
Request Number  ABC123
Order Number    XYZLKJHGVC
Order Activity  Assigned
Product         Phone
Cpe             Y