windows下如何安装和启动MySQL_MySQL
以下内容分成四步介绍windows下如何安装和启动MySQL,具体内容请看下文。
第一步:下载mysql安装包或者绿色版,放到自己喜欢的目录。
第二步:配置环境变量。MYSQL_HOME,值为mysql的根目录;在path中添加%MYSQL_HOME%/bin目录。
第三步:向windows注册mysql服务。必须用管理员权限打开命令行,然后切换到mysql 的 bin目录下,输入命令:mysqld.exe --install MySql --defaults-file="d:/mysql/my-default.ini",【d:/mysql/my-default.ini】改为自己的mysql安装目录。
第四步:启动mysql服务。在命令行输入:net start mysql,成功会提示:MySql 服务已经启动成功。
问题:mysql数据库的user表里,存在用户名为空的账户即匿名账户,导致登录的时候是虽然用的是root,但实际是匿名登录的,通过错误提示里的''@'localhost'可以看出来。这会导致没有权限创建数据表等操作。
解决:关闭并注销服务后用户登录,执行下面的操作。
1、cmd模式进入mysql的bin目录,输入d:/mysql/bin>mysqld --defaults-file="d:/mysql/my-default.ini" --console --skip-grant-tables,回车,此命令行会挂起。
2. 另开一个命令行,同样切到mysql bin目录下,d:/mysql/bin>mysql -u root mysql,回车
Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 1 Server version: 5.6.20 MySQL Community Server (GPL)
mysql>
已连接上mysql数据库,可以输入mysql命令了。
3、设置密码
mysql> update user set password=PASSWORD('123456') where user='root'; Query OK, 2 rows affected (0.02 sec) Rows matched: 3 Changed: 2 Warnings: 0 mysql> FLUSH PRIVILEGES; mysql> quit
以上内容就是本文给大家分享windows下如何安装和启动MySQL,希望大家喜欢。

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