1、下载

下载mysql8

2、安装

① 解压到需要安装的目录，然后新建一个my.ini(位于解压目录下，与bin目录在同一个目录下)

# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/8.0/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]
 
# Remove leading # and set to the amount of RAM for the most important data
# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.
innodb_buffer_pool_size = 128M
 
# Remove leading # to turn on a very important data integrity option: logging
# changes to the binary log between backups.
# log_bin
 
# These are commonly set, remove the # and set as required.
 basedir = D:\\hzhh123\\mysql8.0
 datadir = D:\\hzhh123\\mysql8.0\data
 port = 3308
server_id = 1
 
 
# Remove leading # to set options mainly useful for reporting servers.
# The server defaults are faster for transactions and fast SELECTs.
# Adjust sizes as needed, experiment to find the optimal values.
join_buffer_size = 128M
sort_buffer_size = 2M
read_rnd_buffer_size = 2M 
 
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES 

② 执行命令生成data文件和密码

mysqld --defaults-file=D:\hzhh123\mysql8.0\my.ini --initialize --console

③ 安装服务

mysqld install mysql8  --defaults-file="D:\hzhh123\mysql8.0\my.ini

mysql8是服务名
④登录，修改密码

mysql -uroot -p -P3308

然后输入密码，最后修改密码

 ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '新密码'; 

3、参考

https://blog.csdn.net/Mint6/article/details/81038536