On Sunday, February 4, 2018 at 11:07:49 AM UTC-5, Mike Bayer wrote:
>
> You test for NULL with == None. I have no idea what your issue is can you
> please share complete mappings, complete stack trace and a reproducible
> example? Thanks
>
This definitely needs a reproduction testcase to find the correct error as
Mike noted, but if you're stuck in a bind for a temporary fix you can try:
User.flag.op('IS')(None)
using `.op()` has gotten me out of a lot of problems.
you should also check the sql emitted, because you may need to
'.self_group()' the or_ elements.
or_(User.flag == None, User.flag != "dnd").self_group()
i haven't been able to create a reliable test case for the above, but there
are a handful of times in postgres queries where my or's haven't been
grouped as expected, leading to a bad query. i check everything now.
>
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