Issue #2565 resolved

consistency between @declared_attr and plain column with joined inh

Michael Bayer
repo owner created an issue

the original behavior given to the "column copy" behavior in mixins doesn't match what's become of the @declared_attr use case. these should probably act the same.

        class Mixin(object):
            a = Column(Integer)

            def b(cls):
                return Column(Integer)

        class A(Mixin, Base):
            __tablename__ = 'a'
            id = Column(Integer, primary_key=True)

        class B(A):
            __tablename__ = 'b'
            id = Column(Integer, ForeignKey(''), primary_key=True)

        assert 'a' in A.__table__.c
        assert 'b' in A.__table__.c
        assert 'a' not in B.__table__.c
        assert 'b' not in B.__table__.c

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