最近在维护服务器的时候，突然发现MySQL无法使用了，于是在“控制面板”-添加/删除程序“中删除了MySQL，重启了一下服务器再安装MySQL。 本来以为可以一路很顺利地Next下去的，但是事与愿违。运行“MySQL Server Instance Config Wizard”时，总会出现“cannot create windows service for mysql error 0”的错误，试了好多次，再次删了MySQL，重启服务器，重新安装，都无济于事。手动启动“服务”里的MySQL服务，
Chapter 1 SAP HANA Guides..................................................................................................................7 Chapter 2 System Requirements...............................................................................
1). 查看Linux版本 [root@lym oracle]# cat /etc/issue Red Hat Enterprise Linux Server release 5 (Tikanga) Kernel \r on an \m 2). 查看内核版本 [root@lym oracle]# uname -a Linux lym.oracle.com 2.6.18-8.el5 #1 SMP Fri Jan 26 14:15:21 EST 2007 i686 i686 i386 GNU/Li
1、Master the installment and maintenance of SQL Server 2008； 2、Master the configuration of login schema of SqlServer2008 ； 3、Learn the solution of login failure of SqlServer2008； 4、Master the configuration of muilti-instance in SqlServer2008.
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博文链接：https://jzinfo.iteye.com/blog/423833工 YSQL Server Inst ance Configuration夏 izard
Welcome to the mySQL Server Instance
Configuration wizard 1. 0.15.0
The ConFiguration Wizard wvill allow you to conFigure the
MySQL Server 5.0 server instance
本文给大家分享在Windows上安装MySQL5.7压缩包的方法，具体内容详情如下所示：
压缩包解压到指定路径下
E:\mysql\mysql-5.7.18-winx64 准备my.ini配置文件
# MySQL Server Instance Configuration File
# ---------------------------------------------------------------
# Generated by the MySQL Server Instance
解决self.env.emit is not a function报错
报错内容
TypeError: self.env.emit is not a function at /usr/local/share/.config/yarn/global/node_modules/yeoman-generator/lib/index.js:653:22 at processTicksAndRejections (internal/process/task_queues.js:97:5) Emitted
ubuntu下，c++ 开发opencv，编译时没有报错， 运行时，发现报如下错 The library is compiled without QT support in function
原因是，安装编译时，未启用QT，报错如下
terminate called after throwing an instance of 'cv::Exception'
what(): OpenCV(4.2.0) ~/opencv-4.2.0/opencv/modules/highgui/src/win
