查詢數據庫查詢與關係表相交的記錄列表

Question

我試圖找到包含2或其中演員的所有電影的列表。

select title from Movie where movieID in(
    select movieID 
    from Cast 
    join MovieHasCast 
     on Cast.castID = MovieHasCast.castID 
    where cast.name = 'gene wilder' 
intersect 
    select movieID 
    from Cast 
    join MovieHasCast 
     on Cast.castID = MovieHasCast.castID 
    where cast.name = 'richard pryor') 

我的選擇將是這樣的：

select title from Movie where movieID in(
    select movieID 
    from Cast 
    join MovieHasCast 
     on Cast.castID = MovieHasCast.castID 
    where cast.name = 'gene wilder' 
    and movieID in (
     select movieID 
     from Cast 
     join MovieHasCast 
      on Cast.castID = MovieHasCast.castID 
     where cast.name = 'richard pryor')) 

這只是我如何實現這一點的樣本。但是，我在C＃中動態構建這個查詢，以按流派，演員等過濾電影列表。我關注性能。

這是完成此任務的最佳方式嗎？我覺得有一個更好的方法來做到這一點我只是不知道如何尤其是因爲用戶可以選擇10個演員成員，並且該查詢將開始變得非常大 - 即使它可能會返回0記錄。

Answer 1

嘗試

select movie.name 
from movie 
join moviehascast mc on mc.movieid = movie.id 
join cast on cast.id = mc.castid 
where cast.name in (@actor1, @actor2) 
group by movie.name 
having count(1) = @numberOfActorsSearched