mysql在命令行中经常用的一些命令，看完后受益匪浅。建议大家看看

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use mysql;

grant all on *.* to root@'%' identified by '123' with grant option;

commit;

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grant all on *.* to xing@'localhost' identified by '123456' with grant option;

update user set password = password('newpwd') where user = 'xing' and host='localhost';

flush privileges;

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create database testdb;

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create database if not testdb;

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use testdb;

create table table1(

username varchar(12),

password varchar(20));

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create table if not exists aaa(ss varchar(20));

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describe table1;

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insert into table1(username,password) values

('leizhimin','lavasoft'),

('hellokitty','hahhahah');

commit;

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select * from table1;

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update table1 set password='hehe' where username='hellokitty';

commit;

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delete from table1 where username='hellokitty';

commit;

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alter table table1 add column(

 sex varchar(2) comment '性别',

 age date not null comment '年龄'

);

commit;

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create table tmp as

select * from table1;

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drop table if exists table1;

drop table if exists tmp;

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mysqldump -h 192.168.3.143 -u root -p pwd -x --default-character-set=gbk >C:\testdb.sql

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drop database testdb;

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mysql -u root -pleizhimin testdb <C:\testdb.sql