Mysql学习积累之二[网摘收藏 个人学习参考]

继续前一篇,这里是一些常用的管理命令,也为转载,所有权归原作者所有,此处仅作参考学习.

mysql常用用户管理命令

本机访问权限：

mysql> grant all privileges on *.* to 'username'@'localhost'

-> identified by 'password' with grant option;

远程访问权限：

mysql> grant all privileges on *.* to 'username'@'%'

另外还有一种方法是直接insert into user，注意这种方法之后需要 flush privileges 让服务器重读授权表。

insert into user(host,user,password,ssl_cipher,x509_issuer,x509_subject)

values(‘localhost’,'xff’,password(‘xff’),”,”,”);

flush privileges;

note：1）必须要加上ssl_cipher,x509_issuer,x509_subject三列，以为其默认值不为空（数据库版本为：5.0.51b）

2）flush privileges重载授权表，使权限更改生效

drop user admin@localhost;（@不加默认为“%”）

revoke delete on test.* from admin@'localhost';

grant select,insert,update,delete on *.* to 'admin2′@'%'

identified by ‘admin2′ with grant option;

note：在mysql中，如果@后面的登录范围不同，帐号可以一样

mysql> grant all on customer.* to 'francis'@'localhost'

-> identified by 'frank'

-> with max_queries_per_hour 20

-> max_updates_per_hour 10

-> max_connections_per_hour 5

-> max_user_connections 2;

使用mysqladmin：

shell> mysqladmin -u user_name -h host_name password "newpwd"

或在mysql里执行语句：

mysql> set password for 'username'@'%'

= password('password');

如果只是更改自己的密码，则：

mysql> set password = password(‘password’);

在全局级别使用grant usage语句(在*.*)来指定某个账户的密码:

mysql> grant usage on *.* to 'username'@'%'

identified by 'password';

或直接修改mysql库表：

mysql> update user set password = password('bagel')

-> where host = '%' and user = 'francis';

mysql> flush privileges;

修改root密码：

update mysql.user set password=password(‘passw0rd’) where user=’root’;

mysql> select password('password');

+-------------------------------------------+

| password('password')                      |

| *2470c0c06dee42fd1618bb99005adca2ec9d1e19 |

1 row in set (0.00 sec)

mysql> select md5('hello');

+----------------------------------+

| md5('hello')                     |

| 5d41402abc4b2a76b9719d911017c592 |

mysql> select sha1('abc');

-> 'a9993e364706816aba3e25717850c26c9cd0d89d'

sha1()是为字符串算出一个 sha1 160比特检查和，如rfc 3174 (安全散列算法)中所述。

grant select (cur_url,pre_url) on test.abc to admin@localhost;

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