================================================================================
Simple sort
================================================================================

from employees
sort age

--------------------------------------------------------------------------------

(program
  (pipeline
    (from
      (keyword_from)
      (identifier))
    (transforms
      (sorts
        (keyword_sort)
        (identifier)))))

================================================================================
Simple sort with direction
================================================================================

from employees
sort {-age}

--------------------------------------------------------------------------------

(program
  (pipeline
    (from
      (keyword_from)
      (identifier))
    (transforms
      (sorts
        (keyword_sort)
        (direction)
        (identifier)))))

================================================================================
Multiple sorts with direction
================================================================================

from employees
sort {age, -tenure, +salary}

--------------------------------------------------------------------------------

(program
  (pipeline
    (from
      (keyword_from)
      (identifier))
    (transforms
      (sorts
        (keyword_sort)
        (identifier)
        (direction)
        (identifier)
        (direction)
        (identifier)))))
