[orm] [bug] The _orm.Session.execute.bind_arguments dictionary is no longer
mutated when passed to _orm.Session.execute() and similar; instead,
it's copied to an internal dictionary for state changes. Among other
things, this fixes and issue where the "clause" passed to the
_orm.Session.get_bind() method would be incorrectly referring to the
_sql.Select construct used for the "fetch" synchronization
strategy, when the actual query being emitted was a _dml.Delete or
_dml.Update. This would interfere with recipes for "routing
sessions".
[orm] [bug] A warning is emitted in ORM configurations when an explicit
_orm.remote() annotation is applied to columns that are local to the
immediate mapped class, when the referenced class does not include any of
the same table columns. Ideally this would raise an error at some point as
it's not correct from a mapping point of view.
[orm] [bug] A warning is emitted when attempting to configure a mapped class within an
inheritance hierarchy where the mapper is not given any polymorphic
identity, however there is a polymorphic discriminator column assigned.
Such classes should be abstract if they never intend to load directly.
[orm] [bug] [regression] Fixed regression for 1.4 in _orm.contains_eager() where the "wrap in
subquery" logic of _orm.joinedload() would be inadvertently triggered
for use of the _orm.contains_eager() function with similar statements
(e.g. those that use distinct(), limit() or offset()), which
would then lead to secondary issues with queries that used some
combinations of SQL label names and aliasing. This "wrapping" is not
appropriate for _orm.contains_eager() which has always had the
contract that the user-defined SQL statement is unmodified with the
exception of adding the appropriate columns to be fetched.
[orm] [bug] [regression] Fixed regression where using ORM update() with synchronize_session='fetch'
would fail due to the use of evaluators that are now used to determine the
in-Python value for expressions in the the SET clause when refreshing
objects; if the evaluators make use of math operators against non-numeric
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Bumps sqlalchemy from 1.4.37 to 1.4.42.
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Sourced from sqlalchemy's releases.
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