

DO
BEGIN
  DECLARE userName NVARCHAR(100); 
  DECLARE userDT NVARCHAR(100); 
  DECLARE userRT NVARCHAR(100);   
  SELECT 'USER' INTO userName FROM DUMMY;
  SELECT '&2' || '_' || :userName || '_DT' into userDT FROM DUMMY;
  SELECT '&2' || '_' || :userName || '_RT' into userRT FROM DUMMY;
END;
