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authorMike Bayer <mike_mp@zzzcomputing.com>2020-08-27 15:50:47 -0400
committerMike Bayer <mike_mp@zzzcomputing.com>2020-08-27 15:53:01 -0400
commitd78686b4f109fdc78ca6239e5a5af791717bc48d (patch)
tree3c06928cbf16b38b7c24ac3d6bc70c2c67186980 /lib/sqlalchemy/testing/assertions.py
parentfe772672b4fc00df0b66aca92e2092779a844a2d (diff)
downloadsqlalchemy-d78686b4f109fdc78ca6239e5a5af791717bc48d.tar.gz
Raise NotImplemenedError for association proxy __clause_element__
It's not possible right now to use an association proxy element as a plain column expression to be SELECTed from or used in a SQL function. An informative error is now raised when this occurs. Fixes: #5542 Change-Id: I334e767ebc0b56c1dccc4a1e5185b0435af77b93
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