Mysql密码设置

在使用MySQL时，出现了这样的错误提示：

you must reset your password using alter,让重设密码。

D:\xampps> mysql -uroot -proot
mysql: [Warning] Using a password on the command line interface can be insecure.

Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 14
Server version: 5.7.9

Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql>

mysql 5.7增加了两个字段password_last_changed、password_lifetime来完善安全策略。
fault_password_lifetime来延长使用期限
或者

ALTER USER 'root'@localhost' PASSWORD EXPIRE INTERVAL 90 DAYS;
ALTER USER 'root'@'localhost' PASSWORD EXPIRE NEVER;
ALTER USER 'root'@'localhost' PASSWORD EXPIRE DEFAULT;

可以使用下面的语法进行权限设置：

mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY '518666' PASSWORD EXPIRE NEVER;
Query OK, 0 rows affected (0.00 sec)

设置成功之后，可以成功使用 use mysql命令了~

相关文章：
ALTER USER Syntax