mysql忘记root密码怎么做

      这篇文章主要介绍了mysql忘记root密码怎么办，具有一定借鉴价值，感兴趣的朋友可以参考下，希望大家阅读完这篇文章之后大有收获，下面让小编带着大家一起了解一下。
 
1.关闭mysql 服务
 
点击(此处)折叠或打开
 
net stop mysql57
 
2.执行mysqld
 
- 打开cmd窗口，切换至mysql安装目录
 
点击(此处)折叠或打开
 
cd C:\Program Files\MySQL\MySQL Server 5.7\bin
C:\Program Files\MySQL\MySQL Server 5.7\bin>mysqld --defaults-file="C:\ProgramData\MySQL\MySQL Server 5.7\my.ini" --skip-grant-tables
3.新开启cmd,登录root
 
-不用输入password，直接回车
 
C:\Program Files\MySQL\MySQL Server 5.7\bin>mysql -uroot -p
Enter password:
 
4.修改root密码
 
点击(此处)折叠或打开
 
mysql> use mysql;
Database changed
mysql> update mysql.user set authentication_string=password('root') where user='root' ;
Query OK, 1 row affected, 1 warning (0.01 sec)
Rows matched: 1  Changed: 1  Warnings: 1
mysql> flush privileges;
Query OK, 0 rows affected (0.02 sec)
5.使用新密码登录root
 
点击(此处)折叠或打开
 
C:\Program Files\MySQL\MySQL Server 5.7\bin>mysql -uroot -p
Enter password: ****
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 6
Server version: 5.7.19 MySQL Community Server (GPL)
Copyright (c) 2000, 2017, 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> show database;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that
corresponds to your MySQL server version for the right syntax to use near 'datab
ase' at line 1
mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| fortress           |
| mysql              |
| performance_schema |
| python             |
| stuman             |
| stuman2            |
| sys                |
| www                |
+--------------------+
9 rows in set (0.00 sec)
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