Sorry for misleading question. I found the problem and it was related to the
index management.
Here's sample:
...
class Person(DeclarativeBase):
id = Column(Integer, primary_key=True)
test = Column(Integer, index=True, unique=True)
... and another file:
from test import Person
class Engineer(Person):
test = Column(Integer)
def drop_test_index():
for i in Engineer.__table__.indexes:
if Engineer.test in i.columns:
Engineer.__table__.indexes.remove(i)
break
drop_test_index()
Fixes it. Is there better way to do it?
Thanks,
Serge.
On Mon, Dec 21, 2009 at 12:03 PM, Serge Koval <serge.ko...@gmail.com> wrote:
> Hello,
>
> I'm trying to override column type in a single-table inheritance, using
> declarative syntax and a bit stuck. Is it possible at all?
> Sample code:
>
> class Person(DeclarativeBase):
> id = Column(Integer, primary_key=True)
> test = Column(Integer, unique=True)
>
> class Engineer(Person):
> test = Column(Integer)
>
> Instead of removing unique flag (from inherited column definition), I get
> composite column test.
>
> Thanks,
> Serge.
>
>
>
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