DELETE FROM demo;

INSERT INTO demo (id, name, age, email,sex,birthday,content) VALUES
(1, 'Jone', 18, 'test1@baomidou.com','1','2017-12-28','很好'),
(2, 'Jack', 20, 'test2@baomidou.com','2','2018-02-28','努力型'),
(3, 'Tom', 28, 'test3@baomidou.com','1','2018-11-28','吃苦'),
(4, 'Sandy', 21, 'test4@baomidou.com','1','2018-07-28','聪明'),
(5, 'Billie', 24, 'test5@baomidou.com','2','2018-12-11','出色');