code: def test_merge_with_column_names(self):
      table_a = Table(
          self.rows,
          self.column_names,
          self.column_types,
          row_names="three",
      )
  
      b_rows = ((1, 4, "d"), (2, 3, "e"), (None, 2, "f"))
  
      c_rows = (
          (1, 4, "a"),
          (2, 3, "b"),
          (None, 2, "c"),
          (None, 4, "d"),
          (None, 3, "e"),
          (None, 2, "f"),
      )
  
      table_b = Table(
          b_rows,
          ["a", "two", "three"],
          self.column_types,
          row_names="three",
      )
      table_c = Table.merge(
          [table_a, table_b], column_names=table_a.column_names
      )
  
      self.assertRows(table_c, c_rows)
  
file_path: agate/tests/test_table/test_merge.py
imports: from agate import Table
  from agate.data_types import Number, Text
  from agate.exceptions import DataTypeError
  from agate.testcase import AgateTestCase
label_desc: Use image node_id 7 for calling the TestMerge obj's underlying member method code with example usage: obj.test_merge_with_column_names() without return types