code: def test_query_with_expr_groupby_timeseries(self):
      if get_example_database().backend == "presto":
          # TODO(bkyryliuk): make it work for presto.
          return
  
      def canonicalize_df(df):
          ret = df.sort_values(
              by=list(df.columns.values), inplace=False
          )
          ret.reset_index(inplace=True, drop=True)
          return ret
  
      df1 = self.query_with_expr_helper(
          is_timeseries=True, inner_join=True
      )
      name_list1 = canonicalize_df(df1).name.values.tolist()
      df2 = self.query_with_expr_helper(
          is_timeseries=True, inner_join=False
      )
      name_list2 = canonicalize_df(df1).name.values.tolist()
      self.assertFalse(df2.empty)
  
      assert name_list2 == name_list1
  
imports: import json
  from superset.utils.core import DatasourceType
  import textwrap
  import unittest
  from unittest import mock
  from superset import security_manager
  from superset.connectors.sqla.models import SqlaTable
  from superset.exceptions import SupersetException
  from superset.utils.core import override_user
  from tests.integration_tests.fixtures.birth_names_dashboard import load_birth_names_dashboard_with_slices, load_birth_names_data
  import pytest
  from sqlalchemy.engine.url import make_url
  from sqlalchemy.types import DateTime
  import tests.integration_tests.test_app
  from superset import app, db
  from superset.db_engine_specs.postgres import PostgresEngineSpec
  from superset.common.db_query_status import QueryStatus
  from superset.models.core import Database
  from superset.models.slice import Slice
  from superset.utils.database import get_example_database
  from .base_tests import SupersetTestCase
  from .fixtures.energy_dashboard import load_energy_table_with_slice, load_energy_table_data
label_desc: Use image node_id 4 for calling the TestSqlaTableModel obj's underlying member method code with example usage: obj.test_query_with_expr_groupby_timeseries() and returns: ret