MySQL: Tabela de horas

CREATE TABLE IF NOT EXISTS `cad_horas` (
  `id_hora` int(11) NOT NULL AUTO_INCREMENT,
  `valor_hora` int(2) unsigned zerofill NOT NULL,
  PRIMARY KEY (`id_hora`)
) ENGINE=InnoDB
<pre>
 
<pre lang="mysql">
INSERT INTO `cad_horas` (`id_hora`, `valor_hora`) VALUES
(1, 00),
(2, 01),
(3, 02),
(4, 03),
(5, 04),
(6, 05),
(7, 06),
(8, 07),
(9, 08),
(10, 09),
(11, 10),
(12, 11),
(13, 12),
(14, 13),
(15, 14),
(16, 15),
(17, 16),
(18, 17),
(19, 18),
(20, 19),
(21, 20),
(22, 21),
(23, 22),
(24, 23);