009.mysql-windows下mysql卸载不干净导致的,安装已经存在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 是否有旧的mysql服务进程 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
删除服务 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 失败 1072: 指定的服务已标记为删除。