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mysql 密码设立

Jun 07, 2016 pm 04:23 PM
mysql password set up

mysql 密码设置 转载 1.直接在数据库中修改记录 mysql use mysql mysql update user set password = password(”new_password”) where user = “user_name”; mysql flush privileges; 其实这种方法就是更新一条数据库记录,与普通update语句不同的是,密码

mysql 密码设置
转载
1.直接在数据库中修改记录
mysql> use mysql
mysql> update user set password = password(”new_password”) where user = “user_name”;
mysql> flush privileges;
其实这种方法就是更新一条数据库记录,与普通update语句不同的是,密码加密存储,需用password()函数来生成,另一个不同点是需要刷新权限表。
2.在数据库中运行set password
mysql> set password for user_name = password(”new_password”);
mysql> flush privileges;
同第一种方法,也要刷新权限表
3.直接在shell环境运行mysqladmin
> mysqladmin -u user_name -p password “new_password”
> mysqladmin flush-privileges
这个方法我试了几次,每次都能将密码记录修改掉,但是每次修改后都无法登录,即使重启数据库也无济于事。所以建议不要采用本方法修改用户密码,尤其是root密码。
4.
grant all privileges on db.table to user_name@localhost identified by “your_pwd”;
用户名密码的生效不必用flush privileges刷新
注:
db.table: db表示授权哪个库,table是相应库里的表。可以用*.*表示所有库所有表。注意,如果想表示某个库的所有表,必须用db_name.*,后面的”.*”不可省略,否则权限将无法赋予。
user_name@localhost: user_name表示用户名,localhost表示该用户只能在本地访问该库,可以用%表示从任何地方访问该库,也可以用111.11.22.33来表示地址
your_pwd: 给用户设置的密码
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