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If autoloading of a table fails, don't register it in a metadata
instance. It seems that the original behaviour was accidentally
changed in f6198d9abf453182f4b111e0579a7a4ef1614e79, restore it.
Closes issue #2988
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mark a constraint name as already having had a naming convention applied.
This token will be used by Alembic migrations as of Alembic 0.6.4
in order to render constraints in migration scripts with names marked
as already having been subject to a naming convention.
re: #2991
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apply to :class:`.CheckConstraint` objects that are associated
directly with a :class:`.Column` instead of just on the
:class:`.Table`.
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where the name of a check constraint making use of the
`"%(constraint_name)s"` token would get doubled up for the
constraint generated by a boolean or enum type, and overall
duplicate events would cause the `"%(constraint_name)s"` token
to keep compounding itself.
fixes #2991
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honor it unless nose is imported too...
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or :meth:`.MapperEvents.after_configured` events are applied to a
specific mapper or mapped class, as the events are only invoked
for the :class:`.Mapper` target at the general level.
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and :func:`.event.listens_for`. This is a convenience feature which
will wrap the given listener such that it is only invoked once.
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Update URL for pymssql
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@zzzeek.
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and also will fail on py3k.
- enhance exclusions so that a requirement attribute can be passed
to fails_if/skip_if.
- fix coverage docs to mention pytest.
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- various improvemnts to oracle docs, rewrite section on unicode, more linking,
enhance section on resolve_synonyms
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This feature is now turned off by default.
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connection to be returned might get inadvertently cleaned out during
the "cleanup" process. Patch courtesy jd23.
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(e.g. ``x[:] = [...]``) would fail on Py3k.
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is currently being supported in addition to nose, and will likely
be preferred to nose going forward. The nose plugin system used
by SQLAlchemy has been split out so that it works under pytest as
well. There are no plans to drop support for nose at the moment
and we hope that the test suite itself can continue to remain as
agnostic of testing platform as possible. See the file
README.unittests.rst for updated information on running tests
with pytest.
The test plugin system has also been enhanced to support running
tests against mutiple database URLs at once, by specifying the ``--db``
and/or ``--dburi`` flags multiple times. This does not run the entire test
suite for each database, but instead allows test cases that are specific
to certain backends make use of that backend as the test is run.
When using pytest as the test runner, the system will also run
specific test suites multiple times, once for each database, particularly
those tests within the "dialect suite". The plan is that the enhanced
system will also be used by Alembic, and allow Alembic to run
migration operation tests against multiple backends in one run, including
third-party backends not included within Alembic itself.
Third party dialects and extensions are also encouraged to standardize
on SQLAlchemy's test suite as a basis; see the file README.dialects.rst
for background on building out from SQLAlchemy's test platform.
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methods, classes, builtins, functools.partial(), everything known so far
- use get_callable_argspec() within ColumnDefault._maybe_wrap_callable, re: #2979
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in particular the logic used to wrap "column default" callables
wouldn't work properly for Python built-ins.
fixes #2979
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- break out reflection of views to support view column reflection separately
from view definition
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to specify the string ``"nested"``. When set to ``"nested"`` as opposed
to ``True``, the "chaining" of joins will parenthesize the inner join on the
right side of an existing outer join, instead of chaining as a string
of outer joins. This possibly should have been the default behavior
when 0.9 was released, as we introduced the feature of right-nested
joins in the ORM, however we are keeping it as a non-default for now
to avoid further surprises.
fixes #2976
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the first SQL expression would be applied as the "comparison type"
to a compared tuple value; this has the effect in some cases of an
inappropriate "type coersion" occurring, such as when a tuple that
has a mix of String and Binary values improperly coerces target
values to Binary even though that's not what they are on the left
side. :func:`.tuple_` now expects heterogeneous types within its
list of values.
fixes #2977
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identity
isn't appended to the list. reflection makes use of this.
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caused a user-provided "getter" to no longer receive values of ``None``
when fetching scalar values from a target that is non-present. The
check for None introduced by this change is now moved into the default
getter, so a user-provided getter will also again receive values of
None.
re: #2810
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refreshed with current names, so that an ``import *`` from this
module again works.
fixes #2975
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a no-name :class:`.BindParameter` is received, e.g. via :func:`.sql.literal`
or similar; the "key" of the bind param is used as the key within
.c. rather than the rendered name. Since these binds have "anonymous"
names in any case, this allows individual bound parameters to
have their own name within a selectable if they are otherwise unlabeled.
fixes #2974
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when presented with duplicate columns. The behavior of emitting a
warning and replacing the old column with the same name still
remains to some degree; the replacement in particular is to maintain
backwards compatibility. However, the replaced column still remains
associated with the ``c`` collection now in a collection ``._all_columns``,
which is used by constructs such as aliases and unions, to deal with
the set of columns in ``c`` more towards what is actually in the
list of columns rather than the unique set of key names. This helps
with situations where SELECT statements with same-named columns
are used in unions and such, so that the union can match the columns
up positionally and also there's some chance of :meth:`.FromClause.corresponding_column`
still being usable here (it can now return a column that is only
in selectable.c._all_columns and not otherwise named).
The new collection is underscored as we still need to decide where this
list might end up. Theoretically it
would become the result of iter(selectable.c), however this would mean
that the length of the iteration would no longer match the length of
keys(), and that behavior needs to be checked out.
fixes #2974
- add a bunch more tests for ColumnCollection
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of columns given positionally would not be preserved. This could
have potential impact in positional situations such as applying the
resulting :class:`.TextAsFrom` object to a union.
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constructs has been enhanced in order to assist with existing
schemes that rely upon addition of ad-hoc keyword arguments to
constructs.
- To suit the use case of allowing custom arguments at construction time,
the :meth:`.DialectKWArgs.argument_for` method now allows this registration.
fixes #2962
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level (e.g. on the :class:`.Mapper` or :class:`.ClassManager`
level, as opposed to on an individual mapped class, and also on
:class:`.Connection`) that also made use of internal argument conversion
(which is most within those categories) would fail to be removable.
fixes #2973
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:func:`.orm.lazyload` with the "wildcard" expression, e.g. ``"*"``,
would raise an assertion error in the case where the query didn't
contain any actual entities. This assertion is meant for other cases
and was catching this one inadvertently.
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implemented right before the release of 0.9.3 affected the case where
a UNION contained nested joins in it. "Join rewriting" is a feature
with a wide range of possibilities and is the first intricate
"SQL rewriting" feature we've introduced in years, so we're sort of
going through a lot of iterations with it (not unlike eager loading
back in the 0.2/0.3 series, polymorphic loading in 0.4/0.5). We should
be there soon so thanks for bearing with us :).
fixes #2969 re: #2967
- solve the issue of join rewriting inspecting various types of
from objects without using isinstance(), by adding some new
underscored inspection flags to the FromClause hierarchy.
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"could not send data to server", which complements the existing
"could not receive data from server" and has been observed by users,
fixes #2936
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on the columns clause of the SELECT statement if the targets were
aliased tables, as opposed to individual aliased columns.
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would fail to be rewritten properly, such as when the exists is
mapped to a column_property in an intricate nested-join scenario. #2967
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for output consistency within the tests as well as in practice
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is done
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