Linux centosVMware mysql用户管理、常用sql语句、mysql数据库备份恢复

一、mysql用户管理

grant all on *.* to ‘user1‘@‘127.0.0.1’ identified by ‘mimA123‘; 创建user1用户

使用user1登录

/usr/local/mysql/bin/mysql -uuser1 -pmimA123 -h127.0.0.1

变为localhost，不加-h也能登录

mysql> grant all on *.* to ‘user1‘@‘localhost‘ identified by ‘mimA123‘;

[[email protected] ~]# /usr/local/mysql/bin/mysql -uuser1 -pmimA123

grant SELECT,UPDATE,INSERT on db1.* to‘user1‘@‘192.168.1.101‘ identified by ‘mimA123‘; 授权

grant all on db1.* to ‘user2‘@‘%‘ identified by ‘mimA123‘; 给任意ip授权，任何ip用%代替

show grants;

show grants for [email protected].1; 查看指定用户授权

二、常用sql语句

登录mysql切换到db1库

select count(*) from mysql.user; 查询

select * from mysql.db;

mysql库里边使用到的ENGINR是MyISAM，能够自动帮助统计有多少行

自己创建的库ENGINE是InnoDB

select db from mysql.db;

select db,user from mysql.db;

select * from mysql.db where host like ‘192.168.%‘;

insert into db1.t1 values (1, ‘abc‘); 插入

update db1.t1 set name=‘aaa‘ where id=1; 更改表的一行

删除数据

delete from db1.t1 where id=1;

truncate table db1.t1; 清空数据表，表格还在

drop table db1.t1; 删除表，所有表格数据都删除了

drop database db1; 删除数据库

三、mysql数据库备份恢复

创建一个新的数据库mysql2

/usr/local/mysql/bin/mysql -uroot -e "create database mysql2"

备份库 mysqldump -uroot -pmimA123 mysql > /tmp/mysql.sql

恢复库 mysql -uroot -pmimA123 mysql < /tmp/mysql.sql

备份表 mysqldump -uroot -pmimA123 mysql user > /tmp/user.sql

恢复表 mysql -uroot -pmimA123 mysql < /tmp/user.sql

备份所有库 mysqldump -uroot -p -A > /tmp/123.sql

只备份表结构 mysqldump -uroot -pmimA123 -d mysql > /tmp/mysql.sql

原文地址：https://www.cnblogs.com/davery/p/8977937.html