oracle使用listagg查詢電影數據

需求 電影名、類別、播放次數、評分
已知的表結構

MOVIE表
MOVIE_ID
TITLE
YEAR
BUDGET
GROSS
PLOT_SUMMARY

MOVIE_GENRE表
MOVIE_ID
GENER_ID

GENRE表
GENRE_ID
NAME

MOVIE_FACT表
CUST_ID
MOVIE_ID
GENRE_ID
ACTIVITY_ID

CUST_RATING表
USERID
MOVIEID
RATING


SELECT A.MOVIE_ID,
  A.TITLE,
  A.GENRE,
  NVL(B.COUNT,0)  AS PLAY_COUNT,
  NVL(C.RATING,0) AS RATING
FROM
  (SELECT MOVIE.MOVIE_ID,
    MOVIE.TITLE,
    LISTAGG(GENRE.NAME,',') WITHIN GROUP(
  ORDER BY GENRE.NAME) AS GENRE
  FROM MOVIE,
    MOVIE_GENRE,
    GENRE
  WHERE MOVIE.MOVIE_ID = MOVIE_GENRE.MOVIE_ID
  AND GENRE.GENRE_ID   = MOVIE_GENRE.GENRE_ID
  GROUP BY MOVIE.MOVIE_ID,
    MOVIE.TITLE
  ) A
LEFT JOIN
  (SELECT MOVIE_ID,
    COUNT(MOVIE_ID) AS COUNT
  FROM MOVIE_FACT
  WHERE ACTIVITY_ID = 4
  GROUP BY MOVIE_ID
  ) B
ON B.MOVIE_ID = A.MOVIE_ID
LEFT JOIN
  (SELECT CUST_RATING.MOVIEID AS MOVIE_ID,
    COUNT(CUST_RATING.RATING) AS RATING
  FROM CUST_RATING
  GROUP BY CUST_RATING.MOVIEID
  ) C
ON A.MOVIE_ID = C.MOVIE_ID