ERROR 1142 (42000):UPDATE command denied to user ''@'loca_MySQL

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ERROR 1142 (42000):UPDATE command denied to user ''@'localhost' for table 'user的问题 mysql> update mysql.user set password='123456'where User='root'; 
 出现ERROR 1142 (42000): UPDATE command denied to user ''@'localhost' for table 'user'错误     解决方法如下： 
 进入mysql/bin目录，执行mysqladmin -uroot password 密码 
 之后，再进mysql -uroot -p 回车后，显示 passwd:  ok！ bitsCN.com