CREATE DATABASE register_homework
 
 USE register_homework;
 
	CREATE TABLE `register`(
		`name` VARCHAR(30) NOT NULL,
		`age`  INTEGER(10) DEFAULT NULL,
		`sex` VARCHAR(10) DEFAULT NULL,
		`major` VARCHAR(30) DEFAULT NULL,
		`adress` VARCHAR(30) DEFAULT NULL,
		`email` VARCHAR(30) DEFAULT NULL,
		PRIMARY KEY(`username`)
	);
	
	INSERT INTO register(`name`,`age`,`sex`,`major`,`adress`,`email`) 
	VALUES('bob','14','男','chemistry','shenzhen','456123@email.com')	

积累一些sql语句，太弱了