009.mysql-windows下mysql卸載不干凈導致的，安裝已經存在The service already exists!

 

 

C:\WINDOWS\system32>mysqld --install mysql8
The service already exists!
The current server installed: E:\mysql\mysql-5.6.42-winx64\bin\mysqld mysql8

查看 是否有舊的mysql服務進程
C:\WINDOWS\system32>sc query mysql

SERVICE_NAME: mysql
        TYPE               : 10  WIN32_OWN_PROCESS
        STATE              : 1  STOPPED
        WIN32_EXIT_CODE    : 0  (0x0)
        SERVICE_EXIT_CODE  : 0  (0x0)
        CHECKPOINT         : 0x0
        WAIT_HINT          : 0x7d0

刪除服務
C:\WINDOWS\system32>sc delete mysql
[SC] DeleteService 成功

C:\WINDOWS\system32>sc delete mysql8
[SC] DeleteService 成功

C:\WINDOWS\system32>sc delete MySQL
[SC] DeleteService 失敗 1072:

指定的服務已標記為刪除。

重新安裝mysql8