oracle使用listagg查询电影数据

需求 电影名、类别、播放次数、评分

已知的表结构

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