A
A.SELECT c.class_no, c.class_name, c.stu_numberFROM t_class cWHERE stu_number BETWEEN 40 AND 50
B
B.SELECT c.class_no, c.class_name, c.stu_numberFROM t_class cWHERE c.stu_number BETWEEN 40 AND 50
C
C.SELECT c.class_no, c.class_name, c.stu_numberFROM t_class cWHERE c.stu_number FROM 40 AND 50
D
D.SELECT c.class_no, c.class_name, c.stu_numberFROM t_class cWHERE c.stu_number BETWEEN 40 TO 50
