EF4.1和Left Outer Join找到空值？

Question

我有两张桌子，地址＆amp;人。人们有FK来解决。我正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

这是否可以使用LINQ to Entities？

我尝试了一些变化

 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在没有人的情况下返回地址。

Answer 1

我建议：

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