MYSQL 关联更新

来一个测试表table1,（友情提醒，测试库执行脚本有时候也需要备份，所以修改sql为你的表后不要着急执行，先来个备份）

DROP TABLE IF EXISTS `table1`;
CREATE TABLE `table1` (
  `id` int(11) NOT NULL,
  `name` varchar(64) DEFAULT NULL,
  `email` varchar(64) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

-- ----------------------------
-- Records of table1
-- ----------------------------
INSERT INTO `table1` VALUES ('1', '111', '111@163.com');
INSERT INTO `table1` VALUES ('2', '222', '333@163.com');
INSERT INTO `table1` VALUES ('3', '333', '222@163.com');

update table1 a,(select * from table1) b set a.`name` = CONCAT(b.`name`,b.email) where a.id = b.id