Execution example::

  logical_count \
    --logical_table Entries \
    --shard_key created_at \
    --columns[n_likes_string].stage initial \
    --columns[n_likes_string].type ShortText \
    --columns[n_likes_string].value n_likes \
    --filter 'n_likes_string == "3"'
  # [[0, 1337566253.89858, 0.000355720520019531], 2]
