MySQL
删除用户piress然后删除
MySQL目录下如下文件cna12.dllMD5: 8981d24d223d8996d97a80f41a5a468eSHA1: 66d4a15cd2e6fadf6949b803b8b9b5e146a3c62dcna12.dllMD5: a922d55a873d4ad0bbbbbc8147a3a65aSHA1: 7f7d5337ae280434ed1a0ad8fb9fb355d5cae171切记要比对好MD5和sha1之后再进行删除，否则会删除正常文件导致
MySQL数据库错误
