一些主要的命令:
登录:
mysql -u username -p
显示全部的数据库:
show databases;
使用某一个数据库:
use databasename;
显示一个数据库的全部表:
show tables;
退出:
quit;
删除数据库和数据表
mysql>drop database 数据库名;
mysql>drop table 数据表名;
用户相关:
查看全部的用户:
SELECT DISTINCT CONCAT('User: ''',user,'''@''',host,''';') AS query FROM mysql.user;
新建用户:
CREATE USER
'dog'
@
'localhost'
IDENTIFIED BY
'123456'
;
为用户授权:
格式:
grant 权限 on 数据库.* to username@登录主机 identified by "password";
演示样例:
grant all privileges on testDB.* to test@localhost identified by '1234';
然后须要运行刷新权限的命令:
flush privileges;
为用户授予部分权限:
grant select,update on testDB.* to test@localhost identified by '1234';
授予一个用户全部数据库的某些权限:
grant select,delete,update,create,drop on *.* to test@"%" identified by "1234";
删除用户:
Delete FROM user Where User='test' and Host='localhost';
然后刷新权限;
删除账户及权限:>drop user username@'%';
>drop user username@ localhost;
>drop user username@ localhost;
改动指定用户password
使用root登录:
mysql -u root -p
运行命令:
update mysql.user set password=password('新密码') where User="test" and Host="localhost";
刷新权限:
flush privileges;
使用root登录:
mysql -u root -p
运行命令:
update mysql.user set password=password('新密码') where User="test" and Host="localhost";
刷新权限:
flush privileges;