create database db_user;
create table tb_user
(
id int not null auto_increment primary key,
name varchar(50) not null,
age int not null,
gender char not null #sex
)
insert into tb_user(name, age, gender) values('张潇', 25, '男');
insert into tb_user(name, age, gender) values('李凯', 28, '男');
insert into tb_user(name, age, gender) values('夏河', 23, '男');
insert into tb_user(name, age, gender) values('刘思', 26, '男');
insert into tb_user(name, age, gender) values('王源', 27, '男');
