内容简介：MySQL创建新用户CREATE USER 'newuser'@'localhost' IDENTIFIED BY 'password';赋予操作权限：
MySQL创建新用户
CREATE USER 'newuser'@'localhost' IDENTIFIED BY 'password';
赋予操作权限：
GRANT ALL PRIVILEGES ON database_name.table_name TO ‘username’@'localhost’;
GRANT ALL PRIVILEGES ON database_name.* TO ‘username’@'localhost’;
删除用户：
DROP USER ‘username’@‘localhost’;
刷新权限：
FLUSH PRIVILEGES;
显示所有用户：
mysql> SELECT user, host FROM mysql.user;
+------------------+-----------+
| user | host |
+------------------+-----------+
| debian-sys-maint | localhost |
| mysql.session | localhost |
| mysql.sys | localhost |
| phpmyadmin | localhost |
| root | localhost |
+------------------+-----------+
显示一个用户的权限：
mysql> SHOW GRANTS FOR 'root'@'localhost';
+---------------------------------------------------------------------+
| Grants for root@localhost |
+---------------------------------------------------------------------+
| GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' WITH GRANT OPTION |
| GRANT PROXY ON ''@'' TO 'root'@'localhost' WITH GRANT OPTION |
+---------------------------------------------------------------------+
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