Question

I have a one to many relationship between a student table and a courses table. I wanted to return all students that have courses that match a certain criteria at the moment I have this

.Context.Users.Where(it => 
                        it.Category.Description == "Student" &&
                        it.Courses.All(p => p.Submitted == true && p.StatusId == null) && 
                        it.Courses.Count > 0);

Now this works fine; if I remove “it.Courses.Count > 0 ” then I get matching Students that have no courses. Is there a better way of doing this without the Count?

Thanks,

Dale

Answer 1

You could improve it a little bit by replacing it.Courses.Count > 0 by

it.Courses.Any()

which asks if the collection has “any” element (at least one) and which translates to EXISTS in SQL.