DECLARE 
  rg_name  VARCHAR2(40) := 'deptno'; 
  rg_id    RecordGroup; 
  errcode  NUMBER; 
BEGIN 
--	execute_query;
  rg_id := Find_Group( rg_name ); 
  IF Id_Null(rg_id) THEN 
    rg_id := Create_Group_From_Query( rg_name, 
                'SELECT deptno' 
               ||'FROM scott.dept ' 
); 
  END IF; 
  errcode := Populate_Group( rg_id ); 
  end;