记录自己创建数据库，需要更具情况修改
这是以一个学生查分系统作为例子：
create table info(
student_id int not null auto_increment, //会自动加值，而且是主键
name char(10),
password char(8) not null default "12345678", //设置默认值是
chinese int(2) default 0,
math int(2) default 0,
english int(2) default 0,
Chemistry int(2) default 0,
Physics int(2) default 0,
time timestamp not null default current_timestamp, //会自动获取时间，不需要插入
PRIMARY KEY (student_id)
)ENGINE=InnoDB DEFAULT CHARSET=utf8; //设置默认编码
插入数据
insert into info(
student_id,name,password,chinese,math,english,Chemistry,Physics)
values
( "2016102401","蔡小先生","19941024",80,90,80,89,95);
删除表中一行的数据
delete from info where student_id=2016102406;
／／－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－
student_id | name | password | chinese | math | english | Chemistry | Physics | time |
+------------+--------------+----------+---------+------+---------+-----------+---------+---------------------+
| 2016102401 | 蔡小先生 | 19941024 | 80 | 90 | 80 | 89 | 95 | 2016-11-19 00:16:11 |
