mysql常用操作（二）

四 MySQL用户管理

grant all on *.* to 'user1' identified by 'passwd';

grant SELECT,UPDATE,INSERT on db1.* to 'user2'@'192.168.133.1' identified by 'passwd';

grant all on db1.* to 'user3'@'%' identified by 'passwd';

show grants;

show grants for [email protected];

mysql常用操作（二）

授予权限grant SELECT,UPDATE,INSERT on db1.* to 'user2'@'192.168.133.1' identified by 'passwd';

授予权限grant all on db1.* to 'user3'@'%' identified by 'passwd';

查看权限show grants;

查看权限show grants for [email protected];

五常用SQL语句

select count(*) from mysql.user;

select * from mysql.db;

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');

update db1.t1 set name='aaa' where id=1;

truncate table db1.t1;

drop table db1.t1;

drop database db1;

六 MySQL数据库备份恢复

备份库 mysqldump -uroot -p123456 mysql > /tmp/mysql.sql

恢复库 mysql -uroot -p123456 mysql < /tmp/mysql.sql

备份表 mysqldump -uroot -p123456 mysql user > /tmp/user.sql

恢复表 mysql -uroot -p123456 mysql < /tmp/user.sql

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

只备份表结构，不备份数据 mysqldump -uroot -p123456 -d mysql > /tmp/mysql.sql