2022-12-07：删除重复的电子邮箱。删除重复数据后，id=3 的数据被删除。请问 sql 语句如何写？ DROP TABLE IF EXISTS `person`； CREATE TABLE `per

DROP TABLE IF EXISTS `person`;CREATE TABLE `person` (  `id` int(11) NOT NULL,  `email` varchar(255) NOT NULL,  PRIMARY KEY (`id`)) ENGINE=InnoDB DEFAULT CHARSET=latin1;
INSERT INTO `person` VALUES ('1', 'john@example.com');INSERT INTO `person` VALUES ('2', 'bob@example.com');INSERT INTO `person` VALUES ('3', 'john@example.com');

DELETE p1 FROM person p1,    person p2WHERE    p1.email = p2.email AND p1.id > p2.id