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of the :class:`.mysql.DATETIME`, :class:`.mysql.TIMESTAMP` and
:class:`.mysql.TIME` types would be incorrectly placed into the
``timestamp`` attribute, which is unused by MySQL, instead of the
``fsp`` attribute.
fixes #3602
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individual categories w/ modernized fixtures, assert attributes
within type objects.
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building on the example of query.join(). Ideally all the methods
in Query would have this kind of thing. fixes #3544
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primary key before emitting an INSERT, and merges distinct objects with
duplicate primary keys together as they are encountered, which is
essentially semi-deterministic at best. This behavior
matches what happens already with persistent objects.
fixes #3601
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fail to emit an UPDATE in the case where the attribute were set to
None and not previously loaded.
fixes #3599
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such as a CHECK constraint would render an erroneous comma in the
definition; this scenario can occur such as with a Postgresql
INHERITS table that has no columns of its own.
fixes #3598
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of disconnect errors for the pymssql driver, as this has been observed
to render a connection unusable.
fixes #3585
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For example, this query:
SELECT s1.users.name FROM s1.users FOR UPDATE OF s1.users
should actually be:
SELECT s1.users.name FROM s1.users FOR UPDATE OF users
fixes #3573
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__bool__ eval
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Fixed bug where in Py2K a unicode literal would not be accepted as the
string name of a class or other argument within declarative using
:func:`.backref` on :func:`.relationship`.
amends commit e6f67f48054d906856f879bc1803ea639aa4b670
backport to rel_1_0
(cherry picked from commit 58f73d2278393d813c7f39736fc96c5086f18f6d)
(cherry picked from commit 33c3aded3a1944d93e9e6bca53e2f749980b8b09)
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Fixed bug where in Py2K a unicode literal would not be accepted as the
string name of a class or other argument within declarative using
:func:`.backref` on :func:`.relationship`.
amends commit e6f67f48054d906856f879bc1803ea639aa4b670
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(cherry picked from commit 4bb6770ae872b69bd65ba0d67a7e1453d1a4e14b)
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From [PEP 479](https://www.python.org/dev/peps/pep-0479/) the correct way to
terminate a generator is to return (which implicitly raises StopIteration)
rather than raise StopIteration.
Without this change using sqlalchemy in python 3.5 or greater results in
these warnings
PendingDeprecationWarning: generator '__iter__' raised StopIteration
which this commit should remove.
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returns an invalid date or time format from a DATE or TIME
column, rather than failing with a NoneType error. Pull request
courtesy Ed Avis.
pullreq github:206
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(cherry picked from commit 6657a008d664c275c41a4beda967ddbb50b6ddec)
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The error message changed to:
`'<' not supported between instances of 'foo' and 'bar'`
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(cherry picked from commit 3a4b89c5a00ea7ea64ca42543041fc46a6907903)
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The places inspect.getargspec was being used were causing problems for
newer Python versions.
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directly or within lazy loads, didn't consider the mapper's "get clause"
as part of the cache key, causing bound parameter mismatches if the
clause got re-generated. This clause is cached by mappers
on the fly but in highly concurrent scenarios may be generated more
than once when first accessed.
fixes #3597
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statement. This feature is available by passing the
:paramref:`~.sqlalchemy.sql.expression.update.preserve_parameter_order`
flag either to the core :class:`.Update` construct or alternatively
adding it to the :paramref:`.Query.update.update_args` dictionary at
the ORM-level, also passing the parameters themselves as a list of 2-tuples.
Thanks to Gorka Eguileor for implementation and tests.
adapted from pullreq github:200
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versions 0.8.0 and 0.8.1, due :ticket:`2714`. The case where
joined eager loading needs to join out over a subclass-bound
relationship when "with_polymorphic" were also used would fail
to join from the correct entity.
fixes #3593
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that intercepts a query and adds entity-oriented criteria
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limit/offset criteria that forces a subquery b. the relationship
uses "secondary" c. the primaryjoin of the relationship refers to
a column that is either not part of the primary key, or is a PK
col in a joined-inheritance subclass table that is under a different
attribute name than the parent table's primary key column d. the
query defers the columns that are present in the primaryjoin, typically
via not being included in load_only(); the necessary column(s) would
not be present in the subquery and produce invalid SQL.
fixes #3592
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scope of a :meth:`.Session.flush` operation that's raising an
exception, as has been observed in some MySQL SAVEPOINT cases, prevents
the original database exception from being observed when it was
emitted during flush, but only on Py2K because Py2K does not support
exception chaining; on Py3K the originating exception is chained. As
a workaround, a warning is emitted in this specific case showing at
least the string message of the original database error before we
proceed to raise the rollback-originating exception.
fixes #2696
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the many caveats and confusing effects of, the popular approach
of using contains_eager() to alter the natural result of a
related collection. I'm not a fan of this technique as it changes
the semantics of a relationship in such a way that the rest of the
ORM isn't aware of and it also can be undone very easily; hence the
section needs as much text for warnings as for describing the
technique itself. fixes #3563
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to return ``datetime.timedelta`` in the same way as that of
:obj:`.types.Interval.python_type`, rather than raising
``NotImplementedError``.
fixes #3571
(cherry picked from commit 29d6f6e19b014bb5ce79032bd8803e32b4da0e5e)
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