一、查看mysql數據庫中的全部用戶:mysql
mysql> SELECT DISTINCT CONCAT('User: ''',user,'''@''',host,''';') AS query FROM mysql.user;
二、查看數據庫中具體某個用戶的權限:sql
mysql> show grants for 'root'@'localhost';
或者數據庫
mysql> select * from mysql.user where user='root' \G;
三、查看user表的表結構。須要具體的項能夠根據表的結構來查詢。code
mysql> desc mysql.user;
四、修改用戶權限:select
mysql> GRANT ALL ON *.* TO `用戶名`@`127.0.0.1` WITH GRANT OPTION;