code: def test_update_columnar_partial_add_row(self):
      tbl = Table([{"a": "abc", "b": 123}], index="a")
  
      tbl.update({"a": ["abc", "def"], "b": [456, None]})
  
      assert tbl.view().to_records() == [
          {"a": "abc", "b": 456},
          {"a": "def", "b": None},
      ]
  
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 11 for calling the TestUpdate obj's underlying member method code with example usage: obj.test_update_columnar_partial_add_row() without return types