CREATE TABLE IF NOT EXISTS `chunks` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`start` date NOT NULL,
`length` smallint(4) unsigned NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=MyISAM ;


INSERT INTO `chunks` (`id`, `start`, `length`) VALUES
(1, '2012-01-01', 5),
(2, '2012-05-01', 3),
(3, '2012-01-03', 3),
(4, '2012-01-06', 3),
(5, '2012-01-09', 13);

2012-01-01 5
2012-01-02 4
2012-01-06 3