Class A

examples/asyncio/async_orm.py:30–38

class A(Base):
    __tablename__ = "a"

    id: Mapped[int] = mapped_column(primary_key=True)
    data: Mapped[Optional[str]]
    create_date: Mapped[datetime.datetime] = mapped_column(
        server_default=func.now()
    )
    bs: Mapped[List[B]] = relationship()


class B(Base):