1.创建my.ini文件

# For advice on how to change settings please see

# http://dev.mysql.com/doc/refman/5.6/en/server-configuration-defaults.html

# *** DO NOT EDIT THIS FILE. It's a template which will be copied to the

# *** default location during install, and will be replaced if you

# *** upgrade to a newer version of MySQL.

[mysqld]

# 设置3309端口

port=3309#根据自己的需要修改端口

# 设置mysql的安装目录

basedir=L:\1_mysql\mysql-8.0.19-winx64 #根据自己的文件位置修改

# 设置mysql数据库的数据的存放目录

datadir=L:\1_mysql\mysql-8.0.19-winx64\Data #根据自己的文件位置修改

# 允许最大连接数

max_connections=200

# 允许连接失败的次数。这是为了防止有人从该主机试图攻击数据库系统

max_connect_errors=10

# 服务端使用的字符集默认为UTF8

character-set-server=utf8

# 创建新表时将使用的默认存储引擎

default-storage-engine=INNODB

# 默认使用“mysql_native_password”插件认证

default_authentication_plugin=mysql_native_password

sql_mode = 'STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION'

[mysql]

# 设置mysql客户端默认字符集

default-character-set=utf8

[client]

# 设置mysql客户端连接服务端时默认使用的端口

port=3309#根据自己的需要修改端口

default-character-set=utf8

2.解压mysql-8.0.19-winx64.zip到安装目录；

3.将my.ini文件复制到mysql-8.0.19-winx64根目录；

4.进入mysql-8.0.19-winx64\bin文件夹，在此文件夹下打开Powershell窗口；

5.安装mysql,

输入:

mysqld --install

返回：

Service successfully installed.

6.初始化mysql,

输入:

mysqld --initialize --console

返回:

2020-05-21T01:51:15.619733Z 0 [System] [MY-013169] [Server] L:\1_mysql\mysql-8.0.19-winx64\bin\mysqld.exe (mysqld 8.0.19) initializing of server in progress as process 328

2020-05-21T01:51:15.622433Z 0 [Warning] [MY-013242] [Server] --character-set-server: 'utf8' is currently an alias for the character set UTF8MB3, but will be an alias for UTF8MB4 in a future release. Please consider using UTF8MB4 in order to be unambiguous.

2020-05-21T01:51:30.165449Z 5 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: e-%Uh<=ga1qp

7.启动mysql,

输入：

net start mysql

回显：

MySQL 服务正在启动 ..

MySQL 服务已经启动成功。

8.登录mysql,

输入：

mysql -u root -p

回显：

Enter password: "输入密码"

Welcome to the MySQL monitor. Commands end with ; or \g.

Your MySQL connection id is 8

Server version: 8.0.19

Copyright (c) 2000, 2020, 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.

9.修改密码：

输入：

ALTER user 'root'@'localhost' IDENTIFIED BY '新密码';

回显：

Query OK, 0 rows affected (0.34 sec)

10.查看端口号：

输入：

show global variables like 'port';

回显：

+---------------+-------+

| Variable_name | Value |

+---------------+-------+

| port | 3309 |

+---------------+-------+

1 row in set, 1 warning (0.01 sec)

11.其它操作

停止mysql服务：net stop mysql

删除mysql：mysqld -remove mysql

删除服务:sc delete mysql