this is a bug , created at http://www.sqlalchemy.org/trac/ticket/1935 , and a
patch which fixes this issue is there. will try to get this committed soon.
On Sep 30, 2010, at 9:57 AM, bogun.dmit...@gmail.com wrote:
> I try to update counter for omr object ang got following:
>
> Traceback (most recent call last):
> File "/home/vugluskr/tmp/z/sa.py", line 56, in <module>
> main()
> File "/home/vugluskr/tmp/z/sa.py", line 52, in main
> q2.update({data.cnt: data.cnt + 1})
> File "/usr/lib/python2.6/site-packages/sqlalchemy/orm/query.py",
> line 2184, in update
> difference(to_evaluate))
> File "/usr/lib/python2.6/site-packages/sqlalchemy/orm/state.py",
> line 257, in expire_attributes
> impl = self.manager[key].impl
> KeyError: 'counter'
>
> Tests script and full output in attaches.
>
> Maybe I going wrong way and SA have more simpler way awailable to make
> query like:
> update tbl set counter = counter + 1 where ...
>
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> <update-output.txt><sa.py>
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