[mysql] 
# 设置mysql客户端默认字符集 
default-character-set=utf8 
[mysqld] 
#设置3306端口 
port = 3306 
# 设置mysql的安装目录 
basedir=F:\mysql-5.7.21-winx64 
# 设置mysql数据库的数据的存放目录 
datadir=F:\mysql-5.7.21-winx64\data 
# 允许最大连接数 
max_connections=200 
# 服务端使用的字符集默认为8比特编码的latin1字符集 
character-set-server=utf8 
# 创建新表时将使用的默认存储引擎 
default-storage-engine=INNODB 

F:\mysql-5.7.21-winx64\bin>mysqld -install 
Service successfully installed.

C:\Windows\system32>net start mysql 
MySQL 服务正在启动 . 
MySQL 服务已经启动成功。 

C:\Windows\system32>mysql -uroot -p 
Enter password: 
Welcome to the MySQL monitor. Commands end with ; or \g. 
Your MySQL connection id is 2 
Server version: 5.7.21 MySQL Community Server (GPL) 
 
Copyright (c) 2000, 2018, 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> 
mysql> 
mysql> show databases; 
+--------------------+ 
| Database  | 
+--------------------+ 
| information_schema | 
| mysql  | 
| performance_schema | 
| sys  | 
+--------------------+ 
4 rows in set (0.00 sec) 
 
mysql> use mysql; 
Database changed 
mysql> update user set authentication_string=password("新密码") where User="root"; 
Query OK, 1 row affected, 1 warning (0.00 sec) 
Rows matched: 1 Changed: 1 Warnings: 1 
mysql> 
mysql>FLUSH PRIVILEGES;