code: def test_update_explicit_index_multi_append_noindex(self):
      data = [{"a": 1, "b": 2}, {"a": 2, "b": 3}, {"a": 3, "b": 4}]
      tbl = Table(data, index="a")
      view = tbl.view()
      tbl.update([{"a": 1, "b": 3}, {"b": 5}])
      assert view.to_records() == [
          {"a": None, "b": 5},
          {"a": 1, "b": 3},
          {"a": 2, "b": 3},
          {"a": 3, "b": 4},
      ]
  
imports: import numpy
  import pyarrow
  import pandas
  from datetime import date, datetime
  from perspective.table import Table
  from pytest import mark
label_desc: Use image node_id 57 for calling the TestUpdate obj's underlying member method code with example usage: obj.test_update_explicit_index_multi_append_noindex() without return types