1、下载 MySQL
https://dev.mysql.com/downloads/mysql/
下载完成后，解压缩到你的目录里。
2、配置 MySQL 的配置文件
创建一个文件，名称为：my.ini，使用记事本打开，输入以下内容
[client]
# 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=D:\SoftWare\Local\Work\mysql-8.0.29-winx64
# 设置 mysql数据库的数据的存放目录，MySQL 8+ 不需要以下配置，系统自己生成即可，否则有可能报错
# datadir=C:\\web\\sqldata
# 允许最大连接数
max_connections=20
# 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
3、初始化数据库
使用管理员权限打开 cmd，来到 mysql 安装目录下的 bin 目录里：
输入命令：mysqld --initialize --console
D:\SoftWare\Local\Work\mysql-8.0.29-winx64\bin>mysqld --initialize --console
2022-07-06T08:38:31.781340Z 0 [System] [MY-013169] [Server] D:\SoftWare\Local\Work\mysql-8.0.29-winx64\bin\mysqld.exe (mysqld 8.0.29) initializing of server in progress as process 18088
2022-07-06T08:38:31.796289Z 1 [System] [MY-013576] [InnoDB] InnoDB initialization has started.
2022-07-06T08:38:32.132148Z 1 [System] [MY-013577] [InnoDB] InnoDB initialization has ended.
2022-07-06T08:38:33.130450Z 6 [Note] [MY-010454] [Server] A temporary password is generated for [email protected]: pn!gQVVuk8(a
pn!gQVVuk8(a就是默认生成的密码。
4、安装 mysqld
输入命令：mysqld install
D:\SoftWare\Local\Work\mysql-8.0.29-winx64\bin>mysqld install
Service successfully installed.
5、启动 mysql
输入命令：net start mysql
D:\SoftWare\Local\Work\mysql-8.0.29-winx64\bin>net start mysql
MySQL 服务正在启动 .
MySQL 服务已经启动成功。
6、登录 mysql
输入命令：mysql -u root -p
再输入刚刚mysql默认生成的密码：** **pn!gQVVuk8(a
D:\SoftWare\Local\Work\mysql-8.0.29-winx64\bin>mysql -u root -p
Enter password: ************
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 8
Server version: 8.0.29
Copyright (c) 2000, 2022, Oracle and/or its affiliates.
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> ALTER user 'root'@'localhost' IDENTIFIED BY 'root';
Query OK, 0 rows affected (0.01 sec)
mysql>
7、修改密码
mysql8+修改密码命令： ALTERuser'root'@'localhost' IDENTIFIED BY'root'
