Mysql basic installation

Note: The following operations are performed under Windows

Download: https://dev.mysql.com/downloads/mysql/

1. official website to download

2, for different operating systems to download different versions

 

3. Extract

mysqld --initialize-insecure

4. Add the environment variable

5. Initialize

mysqld --initialize-insecure

6. Start sql service

mysqld # Start MySQL service 

can also be made into MySQL Windows Service Note: - before install, you must start with the absolute path to the command MySQL　　# make MySQL Windows service, execute this command in Terminal:　　"c: \ MySQL-5.6.40 -winx64 \ bin \ mysqld "--install # remove MySQL Windows service, execute this command in terminal:　　" c: \ MySQL-5.6.40-Winx64 \ bin \ mysqld "--remove after registering as a service at a later time when you start and shut down the MySQL service, just execute the following command: 　　# start MySQL service　　NET start MySQL # shut down MySQL service　　net stop mysql

　　



　　



　　



　　

7. Start the mysql client and connect mysql server (cmd to open a new window)

 

MySQL - U root - the p-# connect to the MySQL server

 

8. Set password

1. Open the terminal input mysql
2. Function of the input provided by mysql: select user (); # to view the current account logs
   •              当前登录的默认账号为ODBC@localhost，如果想切到root账号登录 执行命令:mysql -uroot -p
3. 设置管理员root账号密码为123

   C:\Users\mjj>mysqladmin -uroot -p password "123"  #设置初始密码 由于原密码为空，因此-p可以不用 Mysql版本的不同，可能执行这句指令不起作用，请使用update mysql.user set authentication_string =password('') where User='root';

 

9.忘记密码(破解密码)

1. 以管理员身份打开cmd
2. 停掉mysql服务端

   C:\WINDOWS\system32>net stop mysql
   MySQL 服务正在停止.
   MySQL 服务已成功停止。

    

3. 执行如下命令跳过授权表

   #跳过授权表
   C:\WINDOWS\system32>mysqld --skip-grant-tables
   2018-06-09 17:12:38 0 [Warning] Insecure configuration for --secure-file-priv: Current value does not restrict location of generated files. Consider setting it to a valid, non-empty path.
   2018-06-09 17:12:38 0 [Note] mysqld (mysqld 5.6.40) starting as process 6052 ...4.

    

4. 现在可以不需要密码直接登录mysql

   mysql -uroot -p

    

5. 现在可以任意的更改密码，执行如下命令

    update mysql.user set authentication_string =password('') where User='root'; 

    

6. 刷新权限

   flush privileges;

7. 退出mysql
8. 让用户去加载权限，以管理员身份进入cmd,查看当前mysql进程

   tasklist |findstr mysql  #查看当前mysql的进程

    

9. 杀死当前的进程，执行如下命令

   taskkill /F /PID 进程ID  # 杀死当前的进程pid

    

10. 重启mysql服务

 

10.统一字符编码

1. 进入mysql客户端，执行\s
2. 为了统一字符编码，请执行如下操作：

   1. 在C:\mysql-5.6.40-winx64文件下创建my.ini文件

   2. 在my.ini文件中写入一下代码

      [mysqld]
      # 设置mysql的安装目录 **后面的路径一定是安装sql的目录（自己电脑的）**
      basedir=C:\mysql-5.7.22-winx64\mysql-5.7.22-winx64
      # 设置mysql数据库的数据的存放目录，必须是data
      datadir=C:\mysql-5.7.22-winx64\mysql-5.7.22-winx64\data
      sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
      
      # mysql端口
      port=3306
      # 字符集
      [mysqld]
      character-set-server=utf8
      collation-server=utf8_general_ci
      [client]
      default-character-set=utf8
      [mysql]
      default-character-set=utf8

       

   3. 重启mysql