import sqlalchemy as sa
from sqlalchemy.orm import Mapped, MappedAsDataclass, DeclarativeBase

t = sa.Table(
    "x",
    sa.MetaData(),
    sa.Column("id", sa.Integer, primary_key=True),
    sa.Column("name", sa.Text),
)

class Base(MappedAsDataclass, DeclarativeBase):
    pass

class X(Base):
    __table__ = t
    id: Mapped[int]
    name: Mapped[int]