我用的mysql来完成增删改查

INSERT INTO `user` (`username`,`sex`,`age`,`email`,`status`) VALUES ('舜','男',16,'s@qq.com',-1);

DELETE FROM `user` WHERE `id` = 2；

UPDATE `user` SET `email` = 'bh@.qq.com' WHERE `id` = 3;

SELECT * FROM `user` WHERE `id` = '1'；