net stop mysql
net start mysql

mysql –u用户名 [–h主机名或者IP地址] –p密码

grant select,insert,update,delete on *.* to user1@localhost Identified by "password1";

grant select,insert,update,delete on mydb.* to user1@localhost identified by "";

show databases;

use mysql;
show tables;

describe 表名;

create database 库名;
drop database 库名;

use 库名;
create table 表名(字段列表);
drop table 表名;

delete from 表名;

select * from 表名;

set names utf8

mysql> update mysql.user set password=PASSWORD(‘新密码') where User='root'; 
mysql> flush privileges; 

mysqldump –opt test > mysql.test

source D:\ceshi.sql 

use test;
load data local infile "文件名" into table 表名;

mysql> SHOW DATABASES;

mysql> CREATE DATABASE MYSQLDATA;

mysql> USE MYSQLDATA; (按回车键出现Database changed 时说明操作成功!)

mysql> SHOW TABLES;

mysql> CREATE TABLE MYTABLE (name VARCHAR(20), sex CHAR(1));

mysql> DESCRIBE MYTABLE;

mysql> insert into MYTABLE values ("hyq","M");

mysql> LOAD DATA LOCAL INFILE "D:/mysql.txt" INTO TABLE MYTABLE;

mysql>use database;
mysql>source d:/mysql.sql;

mysql>drop TABLE MYTABLE;

mysql>delete from MYTABLE;

mysql>update MYTABLE set sex="f" where name='hyq';

mysql> rename table MyClass to YouClass;

mysql> alter table test change t_name t_name_new varchar(20);

alter table `fy_images` add newColumn varchar(8) NOT NULL COMMENT '新添加的字段'