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Mike Bayer
f9275198c3
(hence becoming two regressions); reports that SELECT statements would GROUP BY a label name and fail was misconstrued that certain backends such as SQL Server should not be emitting ORDER BY or GROUP BY on a simple label name at all; when in fact, we had forgotten that 0.9 was already emitting ORDER BY on a simple label name for all backends, as described in :ref:`migration_1068`, as 1.0 had rewritten this logic as part of 🎫`2992`. In 1.0.2, the bug is fixed both that SQL Server, Firebird and others will again emit ORDER BY on a simple label name when passed a :class:`.Label` construct that is expressed in the columns clause, and no backend will emit GROUP BY on a simple label name in this case, as even Postgresql can't reliably do GROUP BY on a simple name in every case. fixes #3338, fixes #3385