Stored Procedure with constants

[Dipak Kumar Choudhury]

Dear friends,
The oracle procedure works fine for constants. But how to write a MySql procedure with the following statements-

DELIMITER $$

CREATE DEFINER=`root`@`localhost`
PROCEDURE 'sp_constants'

begin
-- Constants Used

NO_RECORD constant INT := 0;
RECORD_PRESENT constant INT := 1;

ACTION_INSERT constant CHAR(1) := 'I';
ACTION_UPDATE constant CHAR(1) := 'U';


end;