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mysql 创建和删除用户_MySQL

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Release: 2016-06-01 13:51:53
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1.远程登录mysql

mysql -h ip -u root -p 密码

2.创建用户

  格式:grant 权限 on 数据库.* to 用户名@登录主机 identified by "密码";

   例1:增加一个test1用户,密码为123456,可以在任何主机上登录,并对所有数据库有查询,增加,修改和删除的功能。需要在mysql的root用户下进行

    mysql>grant select,insert,update,delete on *.* to test1@"%" identified by "123456";

    mysql>flush privileges;

     例2:增加一个test2用户,密码为123456,只能在192.168.2.12上登录,并对数据库student有查询,增加,修改和删除的功能。需要在mysql的root用户下进行

    mysql>grant select,insert,update,delete on student.* to test2@192.168.2.12 identified by "123456";

     mysql>flush privileges;

      例3:授权用户test3拥有数据库student的所有权限

      mysql>grant all privileges on student.* to test3@localhost identified by '123456';

     mysql>flush privileges;

3.修改用户密码

     mysql>update mysql.user set password=password('123456') where User='test1' and Host='localhost';

     mysql>flush privileges;

4.删除用户

   mysql>delete from user where user='test2' and host='localhost';

  mysql>flush privileges;

5.删除数据库和删除表

  mysql>drop database 数据库名;

 mysql>drop table 表名;

6.删除账户及权限

  drop user 用户名@'%'

  drop user 用户名@localhost

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