mysql如何让一个用户同时管理多个数据库

mysql 创建一个用户 hail，密码 hail，指定一个数据库 haildb 给 hail

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

grant select,update on haildb.* to hail@localhost identified by 'hail'

flush privileges

删除用户

delete from user where user='hail' and host='localhost'

flush privileges

删除用户数据库

drop database haildb

修改指定用户密码

update user set password=password('new_password') where user='hail' and host='localhost'

flush privileges

增加新用户

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

如，增加一个用户user1密码为password1，让其可以在本机上登录， 并对所有数据库有查询、插入、修改、删除的权限。首先用以root用户连入mysql，然后键入以下命令：

grant select,insert,update,delete on *.* touser1@localhost Identified by "password1"

如果希望该用户能够在任何机器上登陆mysql，则将localhost改为"%"。

如果你不想user1有密码，可以再打一个命令将密码去掉。

all代表所有权限；

grant select,insert,update,delete on mydb.*to user1@localhost identified by ""

例：

grant all on dbname.* to user@”%”identified by "password"

grant all on dbname.* to user@”%” identifiedby "password"

GRANT ALL PRIVILEGES ON `mydb`.* TO 'root'@'192.168.%.%' identified by 'mypwd' WITH GRANT OPTION

GRANT ALL PRIVILEGES ON `mydb`.* TO 'root'@'10.111.1.80' identified by 'mypwd' WITH GRANT OPTION

GRANT ALL PRIVILEGES ON `mydb`.* TO 'root'@'172.%.%.%' identified by 'mypwd' WITH GRANT OPTION

FLUSH PRIVILEGES

不可以用逗号分隔，只能多次授权。

数据库mysql下user表会显示多条授权记录

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