code: def test_sql_div() -> None:
      df = pl.LazyFrame(
          {
              "a": [10.0, 20.0, 30.0, 40.0, 50.0],
              "b": [-100.5, 7.0, 2.5, None, -3.14],
          }
      )
      with pl.SQLContext(df=df, eager_execution=True) as ctx:
          res = ctx.execute(
              """
              SELECT
                a / b AS a_div_b,
                a // b AS a_floordiv_b
              FROM df
              """
          )
  
      assert_frame_equal(
          pl.DataFrame(
              [
                  [
                      -0.0995024875621891,
                      2.85714285714286,
                      12.0,
                      None,
                      -15.92356687898089,
                  ],
                  [-1, 2, 12, None, -16],
              ],
              schema=["a_div_b", "a_floordiv_b"],
          ),
          res,
      )
  
imports: from __future__ import annotations
  import datetime
  import math
  from pathlib import Path
  import pytest
  import polars
  import polars.selectors
  from polars.exceptions import ComputeError, InvalidOperationError
  from polars.testing import assert_frame_equal, assert_series_equal
label_desc: Use image node_id 6 for calling a global function with example usage: test_sql_div() without return types