The service already exists!
The current server installed: D:\softwares\mysql\mysql-8.0.15-winx64\bin\mysqld MySQL
解答：存在有mysql，使用myslqd remove清除之前的
2020-01-28T14:34:05.861051Z 0 [System] [MY-013169] [Server] D:\softwares\mysql\mysql-8.0.15-winx64\bin\mysqld.exe (mysqld 8.0.15) initializing of server in progress as process 12760
2020-01-28T14:34:05.862602Z 0 [ERROR] [MY-010457] [Server] --initialize specified but the data directory has files in it. Aborting.
2020-01-28T14:34:05.862611Z 0 [ERROR] [MY-013236] [Server] Newly created data directory D:\softwares\mysql\mysql-8.0.15-winx64\data\ is unusable. You can safely remove it.
2020-01-28T14:34:05.872350Z 0 [ERROR] [MY-010119] [Server] Aborting
2020-01-28T14:34:05.872450Z 0 [System] [MY-010910] [Server] D:\softwares\mysql\mysql-8.0.15-winx64\bin\mysqld.exe: Shutdown complete (mysqld 8.0.15) MySQL Community Server - GPL.
解答：
data目录下存在有内容，需要对其进行清空即可
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