1.建表:
CREATE TABLE `orders` ( `oid` int(11) NOT NULL AUTO_INCREMENT, `total` double DEFAULT NULL, `ordertime` datetime DEFAULT NULL, `state` int(11) DEFAULT NULL, `name` varchar(20) DEFAULT NULL, `addr` varchar(100) DEFAULT NULL, `phone` varchar(20) DEFAULT NULL, `uid` int(11) DEFAULT NULL, PRIMARY KEY (`oid`), KEY `FKC3DF62E5AA3D9C7` (`uid`), CONSTRAINT `FKC3DF62E5AA3D9C7` FOREIGN KEY (`uid`) REFERENCES `user` (`uid`) ) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8; CREATE TABLE `orderitem` ( `itemid` int(11) NOT NULL AUTO_INCREMENT, `count` int(11) DEFAULT NULL, `subtotal` double DEFAULT NULL, `pid` int(11) DEFAULT NULL, `oid` int(11) DEFAULT NULL, PRIMARY KEY (`itemid`), KEY `FKE8B2AB6166C01961` (`oid`), KEY `FKE8B2AB6171DB7AE4` (`pid`), CONSTRAINT `FKE8B2AB6166C01961` FOREIGN KEY (`oid`) REFERENCES `orders` (`oid`), CONSTRAINT `FKE8B2AB6171DB7AE4` FOREIGN KEY (`pid`) REFERENCES `product` (`pid`) ) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8;