mysql 创建一个用户 hail,密码 hail,指定一个数据库 haildb 给 hail
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mysql -u root -p
password
use mysql;
insert into user(host,user,password) values('localhost','hail',password('hail'));
flush privileges;
create database haildb;
grant all privileges on haildb.* to hail@localhost identified by 'hail';
flush privileges;
如果想指定部分权限给用户
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grant select,update on haildb.* to hail@localhost identified by 'hail';
flush privileges;
删除用户
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delete from user where user='hail' and host='localhost';
flush privileges;
删除用户数据库
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drop database haildb;
修改指定用户密码
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update user set password=password('new_password') where user='hail' and host='localhost';
flush privileges;
1.远程登录mysql
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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
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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
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mysql>grant select,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
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mysql>grant all privileges on student.* to test3@localhost identified by "123456";
mysql>flush privileges;
3.修改用户密码
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mysql>update mysql.user set password=password("123456") where User="test1" and Host="localhost";
mysql>flush privileges;
4.删除用户
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mysql>delete from user where user="test2" and host="localhost";
mysql>flush privileges;
5.删除数据库和删除表
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mysql>drop database 数据库名;
mysql>drop table 表名;
6.删除账户及权限
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drop user 用户名@"%"
drop user 用户名@localhost
flush privileges;