Display results from dynamic query created and executed inside procedure

Question

Hi;
I have created this code:
CREATE OR REPLACE PROCEDURE RunDynamicQuery(Var1 IN VARCHAR2, Var2 IN VARCHAR2, VAR3 IN VARCHAR2) AS
-- Do something
-- That ends up with a variable holding a query.... (just an example)
MainQuery :='select sysdate from dual';
end RunDynamicQuery;
How can I run this procedure and see the result on the dymanic query generated inside it?
BEGIN
compare_tables_content('VAR1','VAR2','VAR3');
END;
Expected Output for this given example:
20-05-2009 11:04:44 ( the result of the dymanic query inside the procedure variable MainQuery :='select sysdate from dual';)
I tested with 'execute immediate':
CREATE OR REPLACE PROCEDURE RunDynamicQuery(Var1 IN VARCHAR2, Var2 IN VARCHAR2, filter IN VARCHAR2) AS
-- Do something
-- That ends up with a variable holding a query.... (just an example)
MainQuery :='select sysdate from dual';
execute immediate (MainQuery );
end RunDynamicQuery;
BEGIN
compare_tables_content('VAR1','VAR2','VAR3');
END;
Output:"Statement processed'' (no sysdate displayed ! )
Please consider that the collums in the query are always dynamic... PIPELINE Table would not work because I would need to define a container, example:
CREATE OR REPLACE TYPE emp_tabtype AS TABLE OF emp_type;
FUNCTION RunDynamicQuery (p_cursor IN sys_refcursor)
RETURN emp_tabtype PIPELINED
IS
emp_in emp%ROWTYPE;
BEGIN
LOOP
FETCH p_cursor
INTO emp_in;
EXIT WHEN p_cursor%NOTFOUND;
PIPE ROW (...)

Answer 1

That would be a nice solution, thanks :)
''For now'' I implemented like this:
My dynamic query now returns a single string ( select col1 || col2 || col3 from bla)
This way I don't have dynamic collumns issue, and from business side, this ''string'' format works for them.
This way I can use the pipelines to get the result out...
OPEN myCursor FOR MainQuery;
FETCH myCursor
INTO myRow;
WHILE (NOT myCursor%notFound) LOOP
PIPE ROW(myRow);
FETCH myCursor
INTO myRow;
END LOOP;
CLOSE myCursor;