1. Uninstall

If data already exists in your system, and then you need to install the high-level version of the database, then you should first uninstall the database, the steps are as follows:
(1) Stop the mysql service: our current service name is mysql80 You mayIs another name mysql

(2) Then control panelUninstall the software about mysql

(3) delete cDelete the C:\Program Files\mysql directory under the disk

(4) Delete the C:\Program Files (x86)\mysql directory under the C drive

(5) Delete the C:\ProgramData\mysql directory under the C drive, it is a hidden directory

(6) Delete mysql in the registry.
Enter the registry first: win+R --> Enter regedit, find the MySQL directory in the registry and delete it according to the path given below

(1)HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\EventLog\Application\MySQL directory(2) HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Services\EventLog\Application\MySQL directory(3) HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\EventLog\Application\MySQL directory(4) HKEY_LOCAL_MACHINE\SYSTEM\CurrentControl001\Services\MySQL directory(5) HKEY_LOCAL_MACHINE\SYSTEM\CurrentControl002\Services\MySQL directory(6) HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MySQL directory

2. Install mysql.

My version is 5.8 now called 8.0

3. Turn on the service

4. Connect MySql

There are three ways to connect:

(1) mysql client connection

(2) The way to pass the command in cmd----must be executed in the directory where the mysql command is located.

C:\Program Files\MySQL\MySQL Server 8.0\bin

mysql -uroot -p-u:account username-p:password password

(3) Use a graphical interface to connect to the mysql service—navicate------->this scheme is the largest


(You can send database and graphical interface by private message)