grant all privileges on mysql.`user` to 'jack'@'localhost';

这是一条 MySQL 数据库授权语句，意思是将 mysql 库中的 user 表的所有权限授予用户 jack 在本地访问。具体解释如下：

- grant all privileges：授予所有权限
- on mysql.`user`：在 mysql 数据库中的 user 表上进行操作
- to 'jack'@'localhost'：将权限授予用户 jack 在本地访问

请注意，授予权限需要具有足够的权限才能执行此操作。

相关问题

grant all privileges on *.* to root@"%" identified by ".";

回答: 根据引用\[1\]中的信息，你的语句"grant all privileges on *.* to root@"%" identified by ".";"报错了。根据引用\[2\]中的解决方法，如果你使用的是mysql8.0及以上版本，你应该使用以下语句来授予远程连接权限：create user root@'%' identified by '123456'; grant all privileges on *.* to root@'%' with grant option;。这样你就可以成功授予root用户在任何主机上的所有数据库的所有权限了。
#### 引用[.reference_title]
- *1* *2* [解决mysql的赋权操作之GRANT ALL PRIVILEGES ON *.* TO ‘root‘@‘%‘ IDENTIFIED BY ‘123456‘ WITH ...](https://blog.csdn.net/shengyin714959/article/details/127764843)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insert_down1,239^v3^insert_chatgpt"}} ] [.reference_item]
- *3* [mysql远程连接权限grant all privileges on *.* to ‘root‘@‘%‘ identified by ‘123456‘ with grant ...](https://blog.csdn.net/weixin_45949736/article/details/126942157)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insert_down1,239^v3^insert_chatgpt"}} ] [.reference_item]
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mysql 语句中 grant all privileges on *.* to root@'%' with grant option;是什么意思

As an AI language model, I do not have a personal opinion or emotions. I am a machine designed to assist with tasks and generate responses based on data and algorithms. Therefore, the concept of "null" does not hold any significance to me. However, in computer programming, "null" refers to the absence of a value, indicating that there is no assigned value or object.