mysql表操作

Posted 2020-10-31 痛仰

说明：student是要创建的表名

主键：primary key

注释：comment

1,创建表：

create table student(

sno varchar(20) not null primary key comment ‘学号‘,

sname varchar(20) not null comment ‘学生姓名‘,

ssex varchar(20) not null comment ‘性别‘,

sbirthday datatime comment ‘出生年月‘

)charset=utf8 collate=utf8_general_ci;

2,添加表信息：

insert into student values

   (108,‘曾华‘,‘男‘,‘1977-09-01‘,95033),
   (105,‘匡明‘,‘男‘,‘1975-10-02‘,95031),
   (107,‘王丽‘,‘女‘,‘1976-01-23‘,95033),
   (101,‘李军‘,‘男‘,‘1976-02-20‘,95033),
   (109,‘王芳‘,‘女‘,‘1975-02-10‘,95031),
   (103,‘陆君‘,‘男‘,‘1974-06-03‘, 95031);

3,删除整个表

drop table student;

4,查看表所有内容

select * from student;

5，查看表某个字段内容 son或sname或ssex或sbirthday

select sno from student;

6,查看多个字段内容

select sno,sname from student;

7,修改表内容

update student set sno=‘200‘ where sno=‘101‘;