Return every book title, its rounded average rating and its rating count. Keep books with no ratings, order by average descending with unrated books last, then title.
Expected: 9 rows. The Seven Moons of Maali Almeida is 4.25 from 2 ratings, The Books of Jacob is 3.95 from 2, and The Employees has a NULL average and count 0. The count is a count of ratings, not a count of joined rows.