How to get XML output from a stored procedure

I have a very simple question:
I would like to write a stored procedure (SP) that will return results in XML format (as a string). My tables in database are not of XML TYPE. But I need XML output.
ie, SP will run like a typical SP but the only difference will be its output in XML.
1) is it possible?
2) if possible, how?
Please, help
Omer Koksal

Thank you Peter, it was a great problem for me !
Omer Koksal

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Hello Folks,
I have this stored procedure and am trying to get the data from the table stage_bill but for some reason i am not sure its not pulling the data.Am a beginner in pl/sql Can any one please help to find out. I can give the code below.
create or replace procedure Load_FADM_Staging_Area_TEST(p_data_load_date date) is
-- local variables
v_start_date                date;
v_end_date                  date;
-- cursor starting
CURSOR c_get_data
IS
SELECT
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,a.beginning_service_date
,a.bill_id
,a.bill_method
,a.bill_number
,a.bill_received_date
,a.bill_status
,a.bill_type
,a.change_oltp_by
,a.change_oltp_date
,a.client_datafeed_code
,a.client_id
,a.created_date
,a.date_of_incident
,a.date_paid
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,a.deleted_oltp_date
,a.duplicate_bill
,a.ending_service_date
,a.event_case_id
,a.event_id
,a.from_oltp_by
,a.oltp_bill_status
,a.review_status
,'HRI' schema_name
, sysdate Load_date
,'ETLPROCESS001' Load_user
,v_start_date as Row_Effective_Date
,null Row_End_date
from stage_bill a
where
--created_date >= to_date('20101031 235959', 'YYYYMMDD HH24MISS')
created_date >= v_start_date
and
--created_date <= to_date('20101111 235959', 'YYYYMMDD HH24MISS')
created_date <= v_end_date
and not exists
(select
b.batch_id
,b.beginning_service_date
,b.bill_id
,b.bill_method
,b.bill_number
,b.bill_received_date
,b.bill_status
,b.bill_type
,b.change_oltp_by
,b.change_oltp_date
,b.client_datafeed_code
,b.client_id
,b.created_date
,b.date_of_incident
,b.date_paid
,b.deleted_oltp_by
,b.deleted_oltp_date
,b.duplicate_bill
,b.ending_service_date
,b.event_case_id
,b.event_id
,b.from_oltp_by
,b.oltp_bill_status
,b.review_status,
b.schema_name,
b.Load_date,
b.Load_user,
b.Row_Effective_Date,
b.Row_End_Date
from STG_FADM_HRI_STAGE_BILL_TEST b)
-- cursor o/p variables
v_batch_id                  stage_bill.batch_id%TYPE;
v_beginning_service_date    stage_bill.beginning_service_date%TYPE;
v_bill_id                   stage_bill.bill_id%TYPE;
v_bill_method               stage_bill.bill_method%TYPE;
v_bill_number               stage_bill.bill_number%TYPE;
v_bill_received_date        stage_bill.bill_received_date%TYPE;
v_bill_status               stage_bill.bill_status%TYPE;
v_bill_type                 stage_bill.bill_type%TYPE;
v_change_oltp_by            stage_bill.change_oltp_by%TYPE;
v_change_oltp_date          stage_bill.change_oltp_date%TYPE;
v_client_datafeed_code      stage_bill.client_datafeed_code%TYPE;
v_client_id               stage_bill.client_id%TYPE;
v_created_date          stage_bill.created_date%TYPE;
v_date_of_incident    stage_bill.date_of_incident%TYPE;
v_date_paid         stage_bill.date_paid%TYPE;
v_deleted_oltp_by     stage_bill.deleted_oltp_by%TYPE;
v_deleted_oltp_date    stage_bill.deleted_oltp_date%TYPE;
v_duplicate_bill     stage_bill.duplicate_bill%TYPE;
v_ending_service_date   stage_bill.ending_service_date%TYPE;
v_event_case_id        stage_bill.event_case_id%TYPE;
v_event_id            stage_bill.event_id%TYPE;
v_from_oltp_by         stage_bill.from_oltp_by%TYPE;
v_oltp_bill_status   stage_bill.oltp_bill_status%TYPE;
v_review_status     stage_bill.review_status%TYPE;
v_schema_name        varchar(50);
v_Load_date          date;
v_Load_user            varchar(50);
v_Row_Effective_Date   date;
v_Row_End_Date         date;
Begin
if p_data_load_date is null then
    select (sysdate - 7), (sysdate - 1) into v_start_date, v_end_date from dual;
elsif p_data_load_date is not null then
   select (p_data_load_date - 7), (p_data_load_date - 1) into v_start_date, v_end_date from dual;
else
    raise_application_error('-20042', 'Data control - GetDataControlAuditData : Date parameter must be a date of this or a previous week.');
end if;
-- cursor c_get_data loop begin
OPEN c_get_data;
    LOOP                                                       -- cursor c_get_data loop begin
      FETCH c_get_data
       INTO
        v_batch_id,
v_beginning_service_date,
v_bill_id ,
v_bill_method ,
v_bill_number,
v_bill_received_date,
v_bill_status,
v_bill_type,
v_change_oltp_by,
v_change_oltp_date,
v_client_datafeed_code,
v_client_id,
v_created_date,
v_date_of_incident,
v_date_paid,
v_deleted_oltp_by,
v_deleted_oltp_date,
v_duplicate_bill,
v_ending_service_date ,
v_event_case_id ,
v_event_id,
v_from_oltp_by,
v_oltp_bill_status,
v_review_status,
v_schema_name,
   v_Load_date,
   v_Load_user,
   V_Row_Effective_Date,
   v_Row_End_Date;
    EXIT WHEN c_get_data%NOTFOUND;
insert into STG_FADM_HRI_STAGE_BILL_TEST
batch_id
,beginning_service_date
,bill_id
,bill_method
,bill_number
,bill_received_date
,bill_status
,bill_type
,change_oltp_by
,change_oltp_date
,client_datafeed_code
,client_id
,created_date
,date_of_incident
,date_paid
,deleted_oltp_by
,deleted_oltp_date
,duplicate_bill
,ending_service_date
,event_case_id
,event_id
,from_oltp_by
,oltp_bill_status
,review_status
,schema_name
,Load_date
,Load_user
,Row_Effective_Date
,Row_End_Date
values(
       v_batch_id,
v_beginning_service_date,
v_bill_id ,
v_bill_method ,
v_bill_number,
v_bill_received_date,
v_bill_status,
v_bill_type,
v_change_oltp_by,
v_change_oltp_date,
v_client_datafeed_code,
v_client_id,
v_created_date,
v_date_of_incident,
v_date_paid,
v_deleted_oltp_by,
v_deleted_oltp_date,
v_duplicate_bill,
v_ending_service_date ,
v_event_case_id ,
v_event_id,
v_from_oltp_by,
v_oltp_bill_status,
v_review_status,
v_schema_name,
v_Load_date,
v_Load_user,
v_Row_Effective_Date,
v_Row_End_Date ) ;
COMMIT;
    END LOOP;
    CLOSE c_get_data;

Maybe you need something else, like
CREATE OR REPLACE PROCEDURE load_fadm_staging_area_test (
p_data_load_date DATE
) IS
v_start_date   DATE;
v_end_date     DATE;
BEGIN
SELECT NVL (p_data_load_date, SYSDATE) - 7,
         NVL (p_data_load_date, SYSDATE) - 1
INTO   v_start_date,
         v_end_date
FROM   DUAL;
MERGE INTO stg_fadm_hri_stage_bill_test b
USING      (SELECT *
              FROM   stage_bill
              WHERE created_date BETWEEN v_start_date AND v_end_date) a
ON         (b.bill_id = a.billl_id)
WHEN NOT MATCHED THEN
    INSERT     (batch_id,
                beginning_service_date,
                bill_id,
                bill_method,
                bill_number,
                bill_received_date,
                bill_status,
                bill_type,
                change_oltp_by,
                change_oltp_date,
                client_datafeed_code,
                client_id,
                created_date,
                date_of_incident,
                date_paid,
                deleted_oltp_by,
                deleted_oltp_date,
                duplicate_bill,
                ending_service_date,
                event_case_id,
                event_id,
                from_oltp_by,
                oltp_bill_status,
                review_status,
                schema_name,
                load_date,
                load_user,
                row_effective_date,
                row_end_date
    VALUES     (a.batch_id,
                a.beginning_service_date,
                a.bill_id,
                a.bill_method,
                a.bill_number,
                a.bill_received_date,
                a.bill_status,
                a.bill_type,
                a.change_oltp_by,
                a.change_oltp_date,
                a.client_datafeed_code,
                a.client_id,
                a.created_date,
                a.date_of_incident,
                a.date_paid,
                a.deleted_oltp_by,
                a.deleted_oltp_date,
                a.duplicate_bill,
                a.ending_service_date,
                a.event_case_id,
                a.event_id,
                a.from_oltp_by,
                a.oltp_bill_status,
                a.review_status,
                'HRI',
                SYSDATE,
                'ETLPROCESS001',
                v_start_date,
                NULL
END load_fadm_staging_area_test;Whenever you code a cursor and a loop, ask yourself. Do I need that?
Regards
Peter

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