本篇文章主要介绍了"MySQL创建用户及赋权限"，主要涉及到方面的内容，对于MySql感兴趣的同学可以参考一下：
一、创建用户命令:CREATE USER 'username'@'host' IDENTIFIED BY 'password'; 说明:username- 你将...
一、创建用户
命令:CREATE USER 'username'@'host' IDENTIFIED BY 'password';
说明:
username
- 你将创建的用户名,
host
- 指定该用户在哪个主机上可以登陆,如果是本地用户可用localhost, 如果想让该用户可以从任意远程主机登陆,可以使用通配符%.
password
- 该用户的登陆密码,密码可以为空,如果为空则该用户可以不需要密码登陆服务器.
例子: CREATE USER 'dog'@'localhost' IDENTIFIED BY '123456';
CREATE USER 'pig'@'192.168.1.101_' IDENDIFIED BY '123456';
CREATE USER 'pig'@'%' IDENTIFIED BY '123456';
CREATE USER 'pig'@'%' IDENTIFIED BY '';
CREATE USER 'pig'@'%';
二、赋权限
命令:GRANT privileges ON databasename.tablename
TO 'username'@'host'
说明:
privileges
- 用户的操作权限,如SELECT , INSERT , UPDATE 等(详细列表见该文最后面).如果要授予所的权限则使用ALL.;
databasename
- 数据库名,
tablename-表名,如果要授予该用户对所有数据库和表的相应操作权限则可用*表示,
如*.*.
例子: GRANT SELECT, INSERT ON test.user TO 'pig'@'%';
GRANT ALL ON *.* TO 'pig'@'%';
注意:用以上命令授权的用户不能给其它用户授权,如果想让该用户可以授权,用以下命令:
GRANT privileges ON databasename.tablename TO 'username'@'host' WITH GRANT OPTION;
三、设置与更改用户密码
命令:SET PASSWORD FOR 'username'@'host' = PASSWORD('newpassword');
如果是当前登陆用户用
SET PASSWORD = PASSWORD("newpassword");
例子: SET PASSWORD FOR 'pig'@'%' = PASSWORD("123456");
四、撤销用户权限
命令:
REVOKE privilege ON databasename.tablename FROM 'username'@'host';
说明: privilege, databasename, tablename - 同授权部分.
例子: REVOKE SELECT ON *.* FROM 'pig'@'%';
注意: 假如你在给用户'pig'@'%'授权的时候是这样的(或类似的):GRANT SELECT ON test.user TO 'pig'@'%', 则在使用REVOKE SELECT ON *.* FROM 'pig'@'%';命令并不能撤销该用户对test数据库中user表的SELECT 操作.相反,如果授权使用的是GRANT
SELECT ON *.* TO 'pig'@'%';则REVOKE SELECT ON test.user FROM 'pig'@'%';命令也不能撤销该用户对test数据库中user表的Select 权限.
具体信息可以用命令SHOW GRANTS FOR 'pig'@'%'; 查看.
五、删除用户
命令:
DROP USER 'username'@'host';
附表:在MySQL中的操作权限
| ALTER | Allows use of ALTER TABLE. |
| ALTER ROUTINE | Alters or drops stored routines. |
| CREATE | Allows use of CREATE TABLE. |
| CREATE ROUTINE | Creates stored routines. |
| CREATE TEMPORARY TABLE | Allows use of CREATE TEMPORARY TABLE. |
| CREATE USER | Allows use of CREATE USER, DROP
USER, RENAME USER,
and REVOKE ALL PRIVILEGES. |
| CREATE VIEW | Allows use of CREATE VIEW. |
| DELETE | Allows use of DELETE. |
| DROP | Allows use of DROP TABLE. |
| EXECUTE | Allows the user to run stored routines. |
| FILE | Allows use of SELECT... INTO
OUTFILE and LOAD DATA INFILE. |
| INDEX | Allows use of CREATE INDEX and DROP
INDEX. |
| INSERT | Allows use of INSERT. |
| LOCK TABLES | Allows use of LOCK TABLES on tables for which the user also has SELECT privileges. |
| PROCESS | Allows use of SHOW FULL PROCESSLIST. |
| RELOAD | Allows use of FLUSH. |
| REPLICATION | Allows the user to ask where slave or master |
| CLIENT | servers are. |
| REPLICATION
SLAVE | Needed for replication slaves. |
| SELECT | Allows use of SELECT. |
| SHOW DATABASES | Allows use of SHOW DATABASES. |
| SHOW VIEW | Allows use of SHOW CREATE VIEW. |
| SHUTDOWN | Allows use of mysqladmin shutdown. |
| SUPER | Allows use of CHANGE MASTER, KILL, PURGE
MASTER LOGS, and SET GLOBAL SQL statements. Allows mysqladmin
debug command. Allows one extra connection to be made if maximum connections are reached. |
| UPDATE | Allows use of UPDATE. |
| USAGE | Allows connection without any specific privileges. |
以上就介绍了MySQL创建用户及赋权限，包括了方面的内容，希望对MySql有兴趣的朋友有所帮助。
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