MySQL8.0版本安装教程一步一步详细配图解答

心已赠人 2023-06-19 13:30 25阅读 0赞

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等待下载完成

双击运行

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如果有需要 我们可以新增一个用户出来

点击 Add User，不需要的话 直接 点击 next

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默认的MySQL安装在C盘

找到 可执行的 mysql的可执行程序

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查看 MySQL服务 是否 启动

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使用 DOS 命令 进行测试 是否 可正常使用

将 mysql 的可执行命令的路径配置到 path 中

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打开 cmd 命令 窗口

输入 msyql -V 能输入出 版本 即可正常使用

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在 cmd 中使用 mysql

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![复制代码][aHR0cHM6Ly9jb21tb24uY25ibG9ncy5jb20vaW1hZ2VzL2NvcHljb2RlLmdpZg]

#进入 数据库
    mysql - u 用户名 -p 密码
    
    #查看当前用户的数据库
    show databases;
    
    #创建一个数据库
    create dabase demo;
    
    #使用哪一个数据库
    use demo;
    
    #创建一个表
    create table my_table(
    id int ,
    name varchar(20)
    )default charset=utf8;
    
    #............

![复制代码][aHR0cHM6Ly9jb21tb24uY25ibG9ncy5jb20vaW1hZ2VzL2NvcHljb2RlLmdpZg]

## 用户跟权限 ##

用户跟权限的相关信息，都是保存在下面表中：

*  mysql.user
 *  mysql.db/host/table/priv…

`mysql.user` 是一个非常重要非常特殊的表，它保存了所有的账号信息，以及保存了账号的权限信息。

如果要操作用户和权限，有两种方式:

1.  使用相关的授权语句
2.  直接修改 mysql.user 表

## 第一种方式 ##

![复制代码][aHR0cHM6Ly9jb21tb24uY25ibG9ncy5jb20vaW1hZ2VzL2NvcHljb2RlLmdpZg]

-- 查看用户
    select current_user(), user();
    select * from mysql.user;
    
    -- 创建与授权
    create user 'xxx'@'host' identified by '密码';
    grant all on ttt.* to 'user'@'host' with grant options;
    
    -- 查看授权情况
    show grants for 'user'@'host';
    
    -- 用户的管理，删除密码等
    set password for 'user'@'host' = password('新密码');
    drop user vip;
    
    -- 授权的相对完整语法为:
    grant all/alter/create/drop/select/update/delete
          on *.* -- db.*/db.table
          to 'user'@'host'
          identified by '密码'
          with max_user_connections 2
               max_connections_pser_hour 5;

![复制代码][aHR0cHM6Ly9jb21tb24uY25ibG9ncy5jb20vaW1hZ2VzL2NvcHljb2RlLmdpZg]

## 第二种方式 ##

![复制代码][aHR0cHM6Ly9jb21tb24uY25ibG9ncy5jb20vaW1hZ2VzL2NvcHljb2RlLmdpZg]

-- 增加用户
    insert into mysql.user(host, user, password) values (xx, yy, zz);
    
    -- 修改密码
    update mysql.user set password=password('新密码') where user='vip' and host='%';
    
    -- 修改权限
    update mysql.user set event_priv='Y' where user='vip' and host='%';
    
    -- 注意，使用 sql 语句修改用户跟权限之后，需要手动刷新权限表
    flush privileges;

![复制代码][aHR0cHM6Ly9jb21tb24uY25ibG9ncy5jb20vaW1hZ2VzL2NvcHljb2RlLmdpZg]

## 使用 **MySQL-Workbench 可视化工具** ##

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点开 Local instance MySQL57 进行测试连接已存在的数据库

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