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from sqlalchemy import Column
from sqlalchemy import Integer
from sqlalchemy import String
from sqlalchemy.orm import registry
from sqlalchemy.sql.schema import ForeignKey
from sqlalchemy.sql.schema import MetaData
from sqlalchemy.sql.schema import Table
reg: registry = registry()
@reg.mapped
class Foo:
__tablename__ = "foo"
id: int = Column(Integer(), primary_key=True)
name: str = Column(String)
@reg.mapped
class Bar(Foo):
__tablename__ = "bar"
id: int = Column(ForeignKey("foo.id"), primary_key=True)
@reg.mapped
class Bat(Foo):
pass
m1: MetaData = reg.metadata
t1: Table = Foo.__table__
t2: Table = Bar.__table__
t3: Table = Bat.__table__
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