参考
https://blog.csdn.net/qq_39135287/article/details/82117234
https://blog.csdn.net/stevenbill/article/details/83814925

下载数据库
官网下载地址：https://dev.mysql.com/downloads/mysql/

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# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/5.7/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]
#skip-grant-tables 
# 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 = .....
# datadir = .....
# port = .....
# server_id = .....
basedir ="D:\mysql-8.0.26-winx64"   # 设置mysql的安装目录 
datadir ="D:\mysql-8.0.26-winx64\data"   # 设置mysql数据库的数据的存放目录，必须是data，或者是//xxx/data  
 
 
# 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 
 
#服务端的编码方式
character-set-server=utf8mb4
[client]
#客户端编码方式，最好和服务端保存一致
loose-default-character-set=utf8mb4
 
[WinMySQLadmin]  
Server = "D:\mysql-8.0.26-winx64\bin\mysqld.exe"

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以管理员身份打开“命令行窗口”，输入命令

mysqld --initialize-insecure --user=mysql

mysqld -install

net start mysql

mysql -uroot -p

use mysql;
ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'root';
flush privileges; 
exit;

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Mysql绿色版卸载

net stop mysql

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删除Mysql的注册表

REG  DELETE KEY_LOCAL_MACHINE/SYSTEM/ControlSet001/Services/Eventlog/Application/MySQL /va /f
REG  DELETE HKEY_LOCAL_MACHINE/SYSTEM/ControlSet002/Services/Eventlog/Application/MySQL  /va /f
REG  DELETE HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/Eventlog/Application/MySQL /va /f

mysqld -remove

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