create database test;
use test;
create table emp(
id int,
workno varchar(10),
name varchar(10),
gender char(1),
age tinyint unsigned,
idcard char(18),
workaddress varchar(50),
entrydate date
);
INSERT INTO emp VALUES 
(1, '00001', '小红', '女', 20, '123456789012345678', '北京', '2000-01-01'),
(2, '00002', '张无忌', '男', 18, '123456789012345670', '北京', '2005-09-01'),
(3, '00003', '韦一笑', '男', 38, '123456789712345670', '上海', '2005-08-01'),
(4, '00004', '赵敏', '女', 18, '123456757123845670', '北京', '2009-12-01'),
(5, '00005', '小昭', '女', 16, '123456769012345678', '上海', '2007-07-01'),
(6, '00006', '杨逍', '男', 28, '12345678931234567X', '北京', '2006-01-01'),
(7, '00007', '范瑶', '男', 40, '123456789212345670', '北京', '2005-05-01'),
(8, '00008', '黛绮丝', '女', 38, '123456157123645670', '天津', '2015-05-01'),
(9, '00009', '小黄', '女', 45, '123156789012345678', '北京', '2010-04-01'),
(10, '00010', '陈友谅', '男', 53, '123456789012345670', '上海', '2011-01-01'),
(11, '00011', '张士诚', '男', 55, '123567897123465670', '江苏', '2015-05-01'), 
(12, '00012', '常遇春', '男', 32, '123446757152345670', '北京', '2004-02-01'),
(13, '00013', '张三丰', '男', 88, '123656789012345678', '江苏', '2020-11-01'),
(14, '00014', '灭绝', '女', 65, '123456719012345670', '西安', '2019-05-01'),
(15, '00015', '胡青牛', '男', 70, '12345674971234567X', '西安', '2018-04-01'),
(16, '00016', '周芷若', '女', 18, null, '北京', '2012-06-01');
create table score(
id int comment 'ID',
name varchar(20) comment '姓名',
math int comment '数学',
english int comment '英语',
chinese int comment '语文'
) comment '学员成绩表';

insert into score VALUES (1, 'Tom', 67, 88, 95), (2, 'Rose' , 23, 66, 90),(3, 'Jack', 56, 98, 76);

create table user(
   id int primary key auto_increment,
   name varchar(10) not null unique,
   age int check (age > 0 && age <= 120),
   status char(1) default '1',
   gender char(1)
);
insert into user(name,age,status,gender) values('Rachel',23,'1','女'),('Tom',20,'0','男');