code: def test_sa_column_no_nullable() -> None:
      with pytest.raises(RuntimeError):
  
          class Item(SQLModel, table=True):
              id: Optional[int] = Field(
                  default=None,
                  nullable=True,
                  sa_column=Column(Integer, primary_key=True),
              )
  
file_path: sqlmodel/tests/test_field_sa_column.py
imports: from typing import Optional
  import pytest
  from sqlalchemy import Column, Integer, String
  from sqlmodel import Field, SQLModel
label_desc: Use image node_id 6 for calling a global function with example usage: test_sa_column_no_nullable() without return types