EF4.1和左外连接找到空值？

Question

我有两个表，地址&人。人们有FK来解决。我试图找到没有人的地址：

select id from Address a 
left outer join person p on p.address_id = a.id 
where p.address_id is null 

这是可能的使用LINQ to Entities？我尝试了几个变化

var results = from addr in _context.Addresses 
       from ppl in addr.People 
       where ppl == null ... 

但似乎无法弄清楚如何返回没有人的地址。

Answer 1

我建议：

var results = (from addr in _context.Addresses 
       where !addr.People.Any() 
       select addr).ToList();