0
我在MySQL中,下表:獨特的值時插入到MySQL
CREATE TABLE `kampbs` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`user` varchar(20) COLLATE utf8_danish_ci DEFAULT NULL,
`k1` varchar(1) COLLATE utf8_danish_ci DEFAULT NULL,
`k1r` varchar(10) COLLATE utf8_danish_ci DEFAULT NULL,
`k2` varchar(1) COLLATE utf8_danish_ci DEFAULT NULL,
`k2r` varchar(10) COLLATE utf8_danish_ci DEFAULT NULL,
`k3` varchar(1) COLLATE utf8_danish_ci DEFAULT NULL,
`k3r` varchar(10) COLLATE utf8_danish_ci DEFAULT NULL,
`week` int(2) DEFAULT NULL,
`grp` varchar(11) COLLATE utf8_danish_ci DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=MyISAM AUTO_INCREMENT=5 DEFAULT CHARSET=utf8 COLLATE=utf8_danish_ci
我有一個形式,即INSERT INTO在數據庫中的字段,但它應該只是可以插入每週一次公關用戶。所以它應該檢查'user'和'week'是否是唯一的。合理? :/
假設用戶「怪胎」在13個星期提交,他不應該能在本週再次提交13
我用下面的$ sql中:
$sql = "INSERT INTO kampbs(user, k1, k1r, k2, k2r, k3, k3r, week, grp) VALUES('$username', '$k1', '$k1r', '$k2', '$k2r', '$k3', '$k3r', '$week', '$grp')";
你應該對複合密鑰(用戶,當週)增加一個unqiue指數 – scaisEdge
添加一個唯一索引字段組合哪一個應該是獨一無二的 – Jens