Three table query using Linq/Lambda in EF

Question

I have three tables

• start (Id, acctId, detailId)
• detail (Id, name)
• item (Id, detailId, desc)

start has a one-to-one relationship with detail , and detail has a one-to-many relation with item .

I am trying to write a lambda or linq query so for a given acctId , I get name and desc . I have tried the following using EF but the result is incorrect:

var te = DbContext.Set<start>().Include("detail")
                  .Where(a=>a.acctId== id && a.detail.items.Any());

Answer 1

If you have navigation properties, and you only want those specific properties:

var te = DbContext.Set<start>().Where(a => a.acctId == id).Select(s => new
     {
         name = s.detail.name,
         descs = s.detail.items.Select(i => i.desc).ToList()
     });

There's a possibility you have more underlying issues as well, though...