text: /*
   * Instructions said descending but didn't specify if that was to be by last_name or count
   * so i have provided both.
   * 
   * 8a = count descending
   * 8b = last_name descending
   * 
   * 
   */
  
  select
  last_name
  ,count(last_name)
  from employees
  group by last_name
  order by count(last_name) desc
  