Linux環境 Mysql新建用戶和數據庫並受權

1.登陸mysql

#mysql -u root -p

2.新增用戶

insert into mysql.user(Host,User,Password) values("localhost","xxx",password("***"));

註釋：xxx爲新建用戶名，***爲用戶密碼

3.執行該句後，還須要刷新權限表

flush privileges;

4.新建數據庫並賦予用戶權限
create database dbtest；

所有受權：
容許本地登陸
grant all privileges on dbtest.* to xxx@localhost identified by "*";
容許任何主機登陸
grant all privileges on dbtest. to xxx@'%' identified by "";
部分受權：
grant select,update on dbtest.* to xxx@localhost identified by "***";

5.賦予權限，還須要再刷新權限表

flush privileges;

6.經過sql語句查詢出新增結果

select user,host,password from mysql.user;

7.刪除用戶

delete from user where user=‘xxx’;
flush privileges;

8.刪除數據庫

drop database dbtest;

9.修改密碼

update mysql.user set password=password(‘新密碼’) where User='xxx' and Host='localhost';flush privileges;