GRANT ALL PRIVILEGES ON *.* TO root @'%' IDENTIFIED BY "mypassword";--%表示所有的IP都能访问，也可以修改为专属的

-- mypassword 为连接密码 需要修改为你自己的

FLUSH PRIVILEGES;

网上一直找原因，没找到具体原因，也试了各种写法，最终成功的还是加了双引号的

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