MySQL 數據庫
MySQL基礎語句(一部分)
create database 'People';
create database People;
use People;
show databases;
show tables;
create table student(
id int,
name varchar(20),
gender varchar(2),
grade int
);
insert into student(id, name, gender, grade) values
(1,'張飛','男',246),
(2,'貂蟬','女',569),
(3,'呂布','男',544);
select * from student;
show variables;
show values like '%char%';
show values like '%collation%'
create database test1;
insert into `person`.`students`(
name varchar(20)
);
drop database People;
drop table student;
alter table students rename teacher;
alter table teacher add class_id int;
alter table teacher CHANGE name xingming varchar(60);
alter table modify xingming char(80);
create table classes(
class_name varchar(32),
class_id int,
class_cretim datetime
);
insert into classes(class_name, class_id, class_cretim) values
('Java班',1,'2014-3-12 12:00:00'),
('PHP班',2,'2014-3-12 12:00:00'),
('前端web班',3,'2014-3-12 12:00:00'),
('python班',4,'2014-3-12 12:00:00');
MySQL備份
mysqldump -uroot -p test1 > ./test1.sql[這裏備份到你存放數據庫備份的文件夾,容易找到還原,以防忘記]
mysql -uroot -p test1 < ./test1.sql;