首先了解到一. 二一.(MySQL下创建用户并且赋予权限)root用户创建yong用户的SQL语句 CREATE USER 'yong'@'localhost' IDENTIFIED BY 'yong2022'; GRANT USAGE ON * . * TO 'yong'@'localhost' IDENTIFIED BY 'yong2022' WITH MAX_QUERIES_PER_HOUR 0 MAX_CONNECTIONS_PER_HOUR 0 MAX_UPDATES_PER_HOUR…