查询数据库查询与关系表相交的记录列表

Question

我试图找到包含2或其中演员的所有电影的列表。

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') 

我的选择将是这样的：

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')) 

这只是我如何实现这一点的样本。但是，我在C＃中动态构建这个查询，以按流派，演员等过滤电影列表。我关注性能。

这是完成此任务的最佳方式吗？我觉得有一个更好的方法来做到这一点我只是不知道如何尤其是因为用户可以选择10个演员成员，并且该查询将开始变得非常大 - 即使它可能会返回0记录。

Answer 1

尝试

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