desc: 1001 (null + between + sindexes)
table_variable_name: tbl
tests:
  - cd: tbl.insert({'a':null})
    rb: tbl.insert({:a => null})
  - cd: tbl.index_create('a')
  - cd: tbl.index_create('b')
  - cd: tbl.index_wait().pluck('index', 'ready')

  - cd: tbl.between(r.minval, r.maxval).count()
    ot: 1
  - py: tbl.between(r.minval, r.maxval, index='a').count()
    js: tbl.between(r.minval, r.maxval, {index:'a'}).count()
    rb: tbl.between(r.minval, r.maxval, :index => 'a').count()
    ot: 0
  - py: tbl.between(r.minval, r.maxval, index='b').count()
    js: tbl.between(r.minval, r.maxval, {index:'b'}).count()
    rb: tbl.between(r.minval, r.maxval, :index => 'b').count()
    ot: 0