What is the number of employees that have a salary between 100000 and 200000?
return employees ;return salaries of  #1 ;return #1 where #2 is  at least 100000 ;return #1 where #2 is  at most 200000 ;return #1 of  both #3 and  #4 ;return number of  #5
['select', 'project', 'comparative', 'comparative', 'intersection', 'aggregate']