Download and installation of mysql under windows

1 download

• Official website address
  https://www.mysql.com/
• click to download
  
• community download
  
• community service
  
• Select version to download
  

2 Create a new data folder and my.ini in the installation directory

• The content of my.ini is as follows

[mysql]
# 设置mysql客户端默认字符集
default-character-set=utf8

[mysqld]
#设置端口
port=3306
#设置mysql根目录
basedir=D:\code_soft\mysql\mysql-8.0.34-winx64
#设置数据库的数据存放目录
datadir=D:\code_soft\mysql\mysql-8.0.34-winx64\data
#设置最大连接数
max_connections=200
#设置mysql服务端字符集，默认为latin1
character-set-server=UTF8MB4
#设置默认存储引擎
default-storage-engine=INNODB
#设置密码永不过期
default_password_lifetime=0
#设置 server接受的数据包大小
max_allowed_packet=16M
#慢查询日志1开启2关闭
slow_query_log=1
#慢查询时间限制为2秒
long_query_time=2

3 installation

• Enter the bin directory as an administrator
  cd D:\code_soft\mysql\mysql-8.0.34-winx64\bin
• initialization

mysqld --initialize-insecure --user=mysql
mysqld --install MySQL
net start mysql
# 直接登录无密码 
mysql -uroot -p

• Problems that may arise
  
• Just add the corresponding file under C:\Windows\System32
  

4Set password and remote connection

*The first time you log in to the MySQL database, you need to reset the password to continue the subsequent database operations

• change Password

alter user 'root'@'localhost' identified by '123456';

• Allow remote connections

use mysql;
update user set host = '%' where user = 'root';
flush privileges;

• Set the encoding format of the password to mysql_native_password

alter user 'root'@'%' identified with mysql_native_password by '123456';

• set password level

set global validate_password.policy = 0;

• Set password length

set global validate_password.length = 4

5 Configure environment variables

• MYSQL_HOME
  
• PATH
  

6 navicate connection is successful