code: def test_table_columnar_mixed_length(self):
      data = [{"a": 1.5, "b": 2.5}, {"a": 3.2}]
      tbl = Table(data)
      assert tbl.size() == 2
      assert tbl.schema() == {"a": float, "b": float}
      assert tbl.view().to_records() == [
          {"a": 1.5, "b": 2.5},
          {"a": 3.2, "b": None},
      ]
  
imports: import sys
  from datetime import date, datetime
  from perspective.core.exception import PerspectiveError
  from perspective.table import Table
  from perspective.table._state import _PerspectiveStateManager
  from perspective.table.libpsppy import PerspectiveCppError, t_filter_op
  from pytest import raises
label_desc: Use image node_id 22 for calling the TestTable obj's underlying member method code with example usage: obj.test_table_columnar_mixed_length() without return types