MySQL常用命令

create database name; 创建数据库
use databasename; 选择数据库
drop database name; 直接删除数据库，不提醒
show tables; 显示表
describe tablename; 表的详细描述
select 中加上distinct去除重复字段
mysqladmin drop databasename; 删除数据库前，有提示。
显示当前mysql版本和当前日期
select version(),current_date;

mysql -u root -p
mysql> update user set password=password("123456") where user='root';
mysql> flush privileges; //刷新数据库
mysql> use dbname; 打开数据库：
mysql> show databases; 显示所有数据库
mysql> show tables; 显示数据库mysql中所有的表：先use mysql；然后 
mysql>describe user; 显示表mysql数据库中user表的列信息）；

mysql> grant all privileges on *.* to user@localhost identified by '密码' with;

格式：grant select on 数据库.* to 用户名@登录主机 identified by “密码”
GRANT ALL PRIVILEGES ON *.* TO 用户名@localhost IDENTIFIED BY '密码' WITH GRANT OPTION;
GRANT ALL PRIVILEGES ON *.* TO 用户名@"%" IDENTIFIED BY '密码' WITH GRANT OPTION;

mysql> revoke all privileges on *.* from root@"%";
mysql> delete from user where user=”root” and host="%";
mysql> flush privileges;

mysql >grant select, insert, update, delete, create,drop on fangchandb.* to custom@ it363.com identified by 'passwd';

mysql > alter table t1 rename t2;

mysqldump -h host -u root -p dbname >dbname_backup.sql

mysqladmin -h myhost -u root -p create dbname
mysqldump -h host -u root -p dbname < dbname_backup.sql

mysqladmin -u root -p -d databasename > a.sql

mysqladmin -u root -p -t databasename > a.sql

mysqldump -T./ phptest driver

mysql > mysql -h myhost -u root -p database < sql.txt;