下載地址：https://dev.mysql.com/downloads/mysql/
1、下載得到zip壓縮包
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然后就開始下載，下載完成，得到了壓縮包
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2、解壓到要安裝的目錄
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3、添加環境變量
我的電腦–>屬性–>高級–>環境變量
選擇path添加：mysql安裝目錄下的bin文件夾地址
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4、新建mysql 配置文件
在你的mysql安裝目錄下，新建my.ini文件，編輯 my.ini文件，注意替換路徑位置
[mysqld]
basedir=D:\JAVA_Environment\MySQL\mysql-8.0.21\
datadir=D:\JAVA_Environment\MySQL\mysql-8.0.21\data\
port=3306
5、安裝mysql服務
啟動管理員模式下的cmd，并將路徑切換至mysql安裝目錄下的bin目錄，輸入以下命令
cd \d D:\JAVA_Environment\MySQL\mysql-8.0.21\bin
mysqld -install
6、初始化數據文件
輸入以下命令
mysqld --initialize-insecure --user=mysql
7、啟動mysql
net start mysql
此時cmd的窗口命令如下
Microsoft Windows [版本 6.1.7601]
版權所有 (c) 2009 Microsoft Corporation。保留所有權利。
C:\Users\Administrator>d:
D:\>cd D:\software\mysql-8.0.22-winx64\bin
D:\software\mysql-8.0.22-winx64\bin>mysqld -install
Service successfully installed.
D:\software\mysql-8.0.22-winx64\bin>mysqld --initialize-insecure --user=mysql
D:\software\mysql-8.0.22-winx64\bin>net start mysql
MySQL 服務正在啟動 .
MySQL 服務已經啟動成功。
D:\software\mysql-8.0.22-winx64\bin>
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8、進入mysql管理界面修改密碼（第一次輸入密碼回車即可）
mysql -u root -p
9、初始密碼不能登錄或者忘記密碼解決辦法
9.1 打開命令窗口cmd，輸入命令：net stop mysql，停止MySQL服務
9.2 開啟跳過密碼驗證登錄的MySQL服務
mysqld --console --skip-grant-tables --shared-memory
9.3 再新打開一個cmd，進行無密碼登錄MySQL
mysql -u root -p
9.4 修改密碼
9.4.1 密碼置為空
use mysql
update user set authentication_string='' where user='root' and host='localhost';
9.4.2 解決 The MySQL server is running with the --skip-grant-tables option so it cannot execute this statement 錯誤，刷新下權限
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flush privileges;
9.4.3 修改自己的密碼
ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '111111'; // 111111就是自己
設置的密碼
9.5 開啟服務，net start mysql
9.6 登錄驗證即可
10、添加用戶并授權
10.1 創建允許外網IP訪問的用戶test001,密碼為Mim@123456
create user 'test001'@'%' identified by 'Mim@123456';
10.2授予用戶通過外網IP對于全部數據庫的全部權限
grant all privileges on *.* to 'test001'@'%';
5.3 刷新權限
flush privileges;
11、客戶端使用navicat for mysql 連接mysql
11.1 用root登錄進客戶端，需要navicat連接的賬號,更改加密方式為mysql_native_password
ALTER USER 'test001'@'%' IDENTIFIED BY 'Mim@123456' PASSWORD EXPIRE NEVER;
11.2 更改密碼
ALTER USER 'test001'@'%' IDENTIFIED WITH mysql_native_password BY 'Mim@123456';
6.3 結果
Microsoft Windows [版本 6.1.7601]
版權所有 (c) 2009 Microsoft Corporation。保留所有權利。
D:\software\mysql-8.0.22-winx64\bin>mysql -u root -p
Enter password: *********
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 7
Server version: 8.0.22 MySQL Community Server - GPL
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.
mysql> update user set authentication_string='' where user='root' and host='loca
lhost';
ERROR 1046 (3D000): No database selected
mysql> use mysql
Database changed
mysql> update user set authentication_string='' where user='root' and host='loca
lhost';
Query OK, 0 rows affected (0.00 sec)
Rows matched: 1 Changed: 0 Warnings: 0
mysql>
mysql> flush privileges;
Query OK, 0 rows affected (0.01 sec)
mysql> ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'hytc2020';
Query OK, 0 rows affected (0.00 sec)
mysql> net start mysql
-> ;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the r
ight syntax to use near 'net start mysql' at line 1
mysql> show database;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the r
ight syntax to use near 'database' at line 1
mysql> show tables;
+----------------------------------------------+
| Tables_in_mysql |
+----------------------------------------------+
| columns_priv |
| component |
| db |
| default_roles |
| engine_cost |
| func |
| general_log |
| global_grants |
| gtid_executed |
| help_category |
| help_keyword |
| help_relation |
| help_topic |
| innodb_index_stats |
| innodb_table_stats |
| password_history |
| plugin |
| procs_priv |
| proxies_priv |
| replication_asynchronous_connection_failover |
| role_edges |
| server_cost |
| servers |
| slave_master_info |
| slave_relay_log_info |
| slave_worker_info |
| slow_log |
| tables_priv |
| time_zone |
| time_zone_leap_second |
| time_zone_name |
| time_zone_transition |
| time_zone_transition_type |
| user |
+----------------------------------------------+
34 rows in set (0.01 sec)
mysql>
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