hi there,

i'm trying to construct a query using the or_ function as follows,

>>> or_(model.Sample.name == 'dddd')
Traceback (most recent call last):
  File "<console>", line 1, in ?
AttributeError: type object 'Sample' has no attribute 'name'

however when i instantiate an unrelated instance this now works,

>>> foo = model.Sample()
>>> or_(model.Sample.name == 'dddd')
<sqlalchemy.sql.expression._BinaryExpression object at 0xb71661ac>

is this the intended behaviour of the orm objects?

regards,

brendan

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