MySQL安装包下载

安装包下载地址

地址：https://www.mysql.com/

解压安装包

我这里是解压到了D盘改了目录名mysql-8.0.44（建议：安装除C盘外的其他盘里）

创建 1.my.ini（新建文件）= MySQL的配置文件 2.data（新建文件夹）= MySQL的数据存放目录

[mysqld]
sql_mode='NO_AUTO_VALUE_ON_ZERO,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION,PIPES_AS_CONCAT,ANSI_QUOTES'
# 严格模式 0是关闭1是打开
innodb_strict_mode=0
# 设置 3306 端口
port=3306
# 设置 mysql 的安装目录，即 bin 目录
basedir="D:\\Users\\Software\\mysql-8.0.44"
# 设置 mysql 数据库的数据的存放目录，即 data 目录
datadir="D:\\Users\\Software\\mysql-8.0.44\\data"
# 允许最大连接数
max_connections=200
# 允许连接失败的次数
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mysql_native_password
default_authentication_plugin=mysql_native_password
[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=3306
default-character-set=utf8

安装MySQL

Microsoft Windows [版本 10.0.26100.6899]
(c) Microsoft Corporation。保留所有权利。
# 命令的作用是以无密码方式初始化 MySQL 数据目录
D:\Users\Software\mysql-8.0.44\bin>mysqld --initialize-insecure --user=mysql
# 在 Windows 系统中为 MySQL 服务创建一个名为 MySQL8 的服务实例的命令
D:\Users\Software\mysql-8.0.44\bin>mysqld install MySQL8
# 这个是没有权限使用终端管理员运行上面命令即可
Install/Remove of the Service Denied!
# 终端管理员身份运行
# PS C:\Users\33476> cd D:\Users\Software\mysql-8.0.44\bin
# PS D:\Users\Software\mysql-8.0.44\bin> mysqld install MySQL8
# Service successfully installed.

D:\Users\Software\mysql-8.0.44\bin>mysql -uroot -p
Enter password: # 没有密码
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 8
Server version: 8.0.44 MySQL Community Server - GPL

Copyright (c) 2000, 2025, 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> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| sys                |
+--------------------+
4 rows in set (0.01 sec)

mysql> ALTER user 'root'@'localhost' IDENTIFIED BY 'root';
Query OK, 0 rows affected (0.02 sec)

mysql> use mysql;
Database changed

mysql> select host,user from user;
+-----------+------------------+
| host      | user             |
+-----------+------------------+
| localhost | mysql.infoschema |
| localhost | mysql.session    |
| localhost | mysql.sys        |
| localhost | root             |
+-----------+------------------+
4 rows in set (0.00 sec)

mysql> update user set host='%' where user ='root';
Query OK, 1 row affected (0.01 sec)
Rows matched: 1  Changed: 1  Warnings: 0

mysql> select host,user from user;
+-----------+------------------+
| host      | user             |
+-----------+------------------+
| %         | root             |
| localhost | mysql.infoschema |
| localhost | mysql.session    |
| localhost | mysql.sys        |
+-----------+------------------+
4 rows in set (0.00 sec)

mysql> flush privileges;
Query OK, 0 rows affected (0.01 sec)
mysql> exit;
Bye

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