Class B

test/orm/dml/test_bulk_statements.py:2255–2267

            }

        class B(A):
            __tablename__ = "b"
            id: Mapped[int] = mapped_column(
                ForeignKey("a.id"), primary_key=True
            )
            bd: Mapped[str]
            z: Mapped[Optional[int]] = mapped_column("zcol")
            q: Mapped[Optional[int]]

            if cls.use_sentinel:
                _sentinel: Mapped[int] = orm_insert_sentinel()

            __mapper_args__ = {"polymorphic_identity": "b"}

    @testing.combinations(
        "orm",