LINQ Lambda Left join with an Inner join

Question

I have written a LINQ lambda query which so far which returns all staff which do not have an associated training row which works fine. I now need to amend my where clause to use

Answer 1

You can do the following (I've not used method chaining syntax to make it more readable IMO):

var query = from s in db.staff
            join m in db.manager on s.manager_id equals m.id
            join t in db.training on s.id equals t.staff_id into tr
            from training in tr.DefaultIfEmpty()
            select new
            {
                Staff = s,
                Training = training
            };