CREATE TABLE school(
    subject VARCHAR(40) PRIMARY KEY,
    grade INI,
    teacher VARCHAR(60));

INSERT INTO school(subject, grade, teacher) VALUES
    ("Математика", 5, "Ковалевская С.В."),
    ("Химия", 4, "Менделеев Д.И."),
    ("Физика", 5, "Энштейн А."),
    ("Литература", 3, "Цветаева М.И."),
    ("Русский язык", 4, "Достоевский Ф.М."),
    ("Астрономия", 5, "Бфуман К."),
    ("Английский язык", 3, "Стокер Б.");
SELECT subject FROM school
    WHERE grade = 5
    ORDER BY subject;