只得到组磨碎日期值等给出如下MySQL查询需要的领域
CREATE TABLE IF NOT EXISTS `testtab` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`name` varchar(100) NOT NULL,
`auto_num` varchar(100) NOT NULL,
`seal_num` varchar(100) NOT NULL,
`arr_date` date NOT NULL,
`unload_date` date NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=11 ;
INSERT INTO `testtab` (`id`, `name`, `auto_num`, `seal_num`, `arr_date`, `unload_date`) VALUES
(1, 'contain1', 'AT0000004815', 'CN44178', '2014-11-28', '2014-11-28'),
(2, 'contain1', 'AT0000004815', 'CN44178', '2014-12-28', '2014-12-28'),
(3, 'contain1', 'AT0000004815', 'CN44178', '2014-12-28', '2014-11-28'),
(4, 'contain1', 'AT0000004815', 'CN44178', '2014-11-28', '2014-12-28'),
(5, 'contain2', 'AT0000000227', 'CG11818', '2015-09-12', '2015-08-30'),
(6, 'contain2', 'AT0000000227', 'CG11818', '2015-08-30', '2015-08-30'),
(7, 'contain2', 'AT0000000227', 'CG11818', '2015-09-12', '2015-09-14'),
(8, 'contain2', 'AT0000000227', 'CG11818', '2015-08-30', '2015-09-14'),
(9, 'contain3', 'AT0000005297', 'FG1005G', '2015-01-25', '2015-01-27'),
(10, 'contain3', 'AT0000005297', 'FG1005G', '2015-01-25', '2014-12-27');
我需要的输出结果等给出如下 MySQL查询结果必须包含arr_date最大日期值,unload_date 组由字段:姓名,auto_num,seal_num
id name auto_num seal_num arr_date unload_date
2 contain1 AT0000004815 CN44178 2014-12-28 2014-12-28
7 contain2 AT0000000227 CG11818 2015-09-12 2015-09-14
9 contain3 AT0000005297 FG1005G 2015-01-25 2015-01-27
我想要的查询在这里使用,请帮助我的人,
谢谢您的回答,我有一些其他领域(共23场)也为其他此查询没有得到正确的(相应的)值实际应用字段 示例id字段需要返回2,7,9,但其返回1,5,9 – raj