Entity Framework include with left join is this possible?

Question

I have the following tables

1. ClassRoom (ClassID,ClassName)
2. StudentClass (StudentID,ClassID)
3. Student (StudentID,StudentName,Etc..)

Answer 1

I just had this problem, in my case it was the EntityTypeConfiguration that was wrong

I had:

   HasRequired(s => s.ClassRoom)
                .WithMany()
                .HasForeignKey(student => student.ClassRoomId);

Instead of:

   HasOptional(s => s.ClassRoom)
                .WithMany()
                .HasForeignKey(student => student.ClassRoomId);

It seems HasRequired makes a INNER JOIN while HasOptional makes a LEFT JOIN.