如何将以下sql查询更改为Linq查询

Question

如何将以下sql查询更改为Linq查询

select [like] 
from FacebookLikes 
where FacebookLikeCategoryID in (select FacebookLikeCategoryID 
                                 from FacebookLikeCategories 
                                 where UserID = 18)

Answer 1

var inner = from cid in FacebookLikeCategories where cid.UserID = 18 select cid.FacebookLikeCategoryID;
var result = from res in FacebookLikes where inner.Contains(res.UserID) select res.[like];