code: def test_no_character_index_without_divisions(db):
      # attempt to read the sql table with a character index and no divisions
      with pytest.raises(TypeError):
          read_sql_table(
              "test",
              db,
              npartitions=2,
              index_col="name",
              divisions=None,
          )
  
imports: from __future__ import annotations
  import io
  import sys
  from contextlib import contextmanager
  import pytest
  from dask.dataframe.io.sql import read_sql, read_sql_query, read_sql_table
  from dask.dataframe.utils import assert_eq, get_string_dtype
  from dask.utils import tmpfile
label_desc: Use image node_id 20 for calling a global function with example usage: test_no_character_index_without_divisions(db) without return types