小编dei*_*eif的帖子

我想将数据库中某些主键列的数据类型从INT更改为BIGINT.以下定义是一个玩具示例来说明问题:

CREATE TABLE IF NOT EXISTS `owner` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `thing_id` int(11) NOT NULL,
  PRIMARY KEY (`id`),
  KEY `thing_id` (`thing_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci AUTO_INCREMENT=1 ;

DROP TABLE IF EXISTS `thing`;
CREATE TABLE IF NOT EXISTS `thing` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci AUTO_INCREMENT=1 ;

ALTER TABLE `owner`
  ADD CONSTRAINT `owner_ibfk_1` FOREIGN KEY (`thing_id`) REFERENCES `thing` (`id`);

现在,当我尝试执行以下命令之一时:

ALTER TABLE `thing` CHANGE `id` `id` BIGINT NOT NULL AUTO_INCREMENT; …