mysql - 错误 1062 (23000) : Duplicate entry '@localhost.localdomain' for key 'PRIMARY'

Question

我错误地输入了这个 mysql 命令:

INSERT INTO `alias` (`source`, `destination`) VALUES ("@localhost.localdomain", "@localhost"), ("@localhost", "email1@domain1.com");

我想从 mysql 数据库中删除或更新电子邮件地址 email1@domain1.com 因为当我尝试插入时:

INSERT INTO `alias` (`source`, `destination`) VALUES ("@localhost.localdomain", "@localhost"), ("@localhost", "goodaccount@domain.com");

我收到错误:

ERROR 1062 (23000): Duplicate entry '@localhost.localdomain' for key 'PRIMARY'

Answer 1

字段source是alias表中的主键。并且您不能一次又一次地在 PK 字段中插入相同的值。当您再次在 PK 字段中插入相同的值时，您会收到此错误

您可以像这样更新电子邮件

UPDATE alias SET destination = 'goodaccount@domain.com' WHERE source  = "@localhost";

用于删除

DELETE FROM alias WHERE destination = 'email1@domain1.com' AND source  = "@localhost";