创建数据库
CREATE DATABASE IF NOT EXISTS $database DEFAULT CHARSET utf8 COLLATE utf8_general_ci;
CREATE DATABASE $database DEFAULT CHARACTER SET gbk COLLATE gbk_chinese_ci;
创建用户并提供相应权限
只是创建用户
CREATE USER phpergao@'localhost' IDENTIFIED BY 'yourpasswd';
赋予权限
GRANT select,update on phpergao.* to phpergao@'localhost';
GRANT index ON phpergao.* TO phpergao@'192.168.0.%';
创建用户并赋予权限
GRANT ALL PRIVILEGES ON phpergao.* TO 'phpergao'@'localhost' IDENTIFIED BY 'yourpasswd';
相反的revoke 跟 grant 的语法差不多,只需要把关键字 “to” 换成 “from” 即可:
REVOKE ALL PRIVILEGES ON phpergao.* FROM 'phpergao'@'localhost';
ALL PRIVILEGES 可以换为 select,insert,update,delete,create,drop,index,alter,grant,references,reload,shutdown,process,file
等14个权限。
删除用户
DELETE FROM user WHERE User='phpergao' and Host='localhost';
修改用户密码
UPDATE USER SET PASSWORD = PASSWORD ('newpasswd') WHERE USER = 'phpergao' AND HOST = 'localhost';
刷新权限:
FLUSH PRIVILEGES;
查看用户权限
查看自己的权限:
SHOW GRANTS;
查看其他人的权限:
SHOW GRANTS FOR 'phpergao'@'%';
新建数据表
DROP TABLE IF EXISTS `workers_info`;
CREATE TABLE `workers_info` (
`id` int(11) unsigned NOT NULL AUTO_INCREMENT,
`workername` varchar(20) NOT NULL,
`sex` enum('F','M','S') DEFAULT 'S',
`salary` int(11) DEFAULT '0',
`email` varchar(30) DEFAULT NULL,
`EmployedDates` date DEFAULT NULL,
`department` varchar(30) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=MyISAM AUTO_INCREMENT=2 DEFAULT CHARSET=utf8;
忘记了mysql密码
修改配置文件
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
ADD:
skip-name-resolve
skip-grant-tables`
然后重启MySQL服务并免密码登录
service mysqld restart
mysql
执行修改密码SQL:将root用户的密码统一设为’admin’
UPDATE mysql.user SET Password=password('123456') WHERE User='root';
还原MySQL配置文件并重启服务
修改用户登录HOST:
UPDATE mysql.user SET Host='&' WHERE User='root';