/* Given the following database schema: */
CREATE TABLE "lists"
(
    user_id                     INTEGER
        references lists_users (user_id),
    list_id                     INTEGER not null
        primary key,
    list_title                  TEXT,
    list_movie_number           INTEGER,
    list_update_timestamp_utc   TEXT,
    list_creation_timestamp_utc TEXT,
    list_followers              INTEGER,
    list_url                    TEXT,
    list_comments               INTEGER,
    list_description            TEXT,
    list_cover_image_url        TEXT,
    list_first_image_url        TEXT,
    list_second_image_url       TEXT,
    list_third_image_url        TEXT
)

CREATE TABLE "movies"
(
    movie_id             INTEGER not null
        primary key,
    movie_title          TEXT,
    movie_release_year   INTEGER,
    movie_url            TEXT,
    movie_title_language TEXT,
    movie_popularity     INTEGER,
    movie_image_url      TEXT,
    director_id          TEXT,
    director_name        TEXT,
    director_url         TEXT
)

CREATE TABLE "ratings_users"
(
    user_id                 INTEGER
        references lists_users (user_id),
    rating_date_utc         TEXT,
    user_trialist           INTEGER,
    user_subscriber         INTEGER,
    user_avatar_image_url   TEXT,
    user_cover_image_url    TEXT,
    user_eligible_for_trial INTEGER,
    user_has_payment_method INTEGER
)

CREATE TABLE lists_users
(
    user_id                 INTEGER not null ,
    list_id                 INTEGER not null ,
    list_update_date_utc    TEXT,
    list_creation_date_utc  TEXT,
    user_trialist           INTEGER,
    user_subscriber         INTEGER,
    user_avatar_image_url   TEXT,
    user_cover_image_url    TEXT,
    user_eligible_for_trial TEXT,
    user_has_payment_method TEXT,
    primary key (user_id, list_id),
    foreign key (list_id) references lists(list_id),
    foreign key (user_id) references lists(user_id)
)

CREATE TABLE ratings
(
    movie_id                INTEGER,
    rating_id               INTEGER,
    rating_url              TEXT,
    rating_score            INTEGER,
    rating_timestamp_utc    TEXT,
    critic                  TEXT,
    critic_likes            INTEGER,
    critic_comments         INTEGER,
    user_id                 INTEGER,
    user_trialist           INTEGER,
    user_subscriber         INTEGER,
    user_eligible_for_trial INTEGER,
    user_has_payment_method INTEGER,
    foreign key (movie_id) references movies(movie_id),
    foreign key (user_id) references lists_users(user_id),
    foreign key (rating_id) references ratings(rating_id),
    foreign key (user_id) references ratings_users(user_id)
)

/* Answer the following: How many movies have a popularity of more than 400 but less than 500? Indicate the name of the movies and the highest rating score each movie has received. popularity of more than 400 but less than 500 refers to movie_popularity BETWEEN 400 AND 500; highest rating score refer to MAX(rating_score) */
SELECT 
SELECT T1.movie_title, MAX(T2.rating_score) FROM movies AS T1 INNER JOIN ratings AS T2 ON T1.movie_id = T2.movie_id WHERE T1.movie_popularity BETWEEN 400 AND 500 GROUP BY T1.movie_title