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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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and MySQL.
Leave this test in place as its ultimately a SQLite use case, but only test on SQLite.
We perhaps should add another test case that works on all platforms.
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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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defaults would prevent history values of NULL from being written.
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fixes #2970
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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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fractional seconds support; also added fractional seconds support
to :class:`.mysql.TIMESTAMP`. DBAPI support is limited, though
fractional seconds are known to be supported by MySQL Connector/Python.
Patch courtesy Geert JM Vanderkelen. #2941
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into t
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or tuple would raise an IndexError. It now produces an empty
insert construct as would be the case with an empty dictionary.
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concurrent ability to return connections from the pool means that the
"first_connect" event is now no longer synchronized either, thus leading
to dialect mis-configurations under even minimal concurrency situations.
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(pre 8.1) versions of Postgresql, and potentially other PG engines
such as Redshift (assuming Redshift reports the version as < 8.1).
The query for "indexes" as well as "primary keys" relies upon inspecting
a so-called "int2vector" datatype, which refuses to coerce to an array
prior to 8.1 causing failures regarding the "ANY()" operator used
in the query. Extensive googling has located the very hacky, but
recommended-by-PG-core-developer query to use when PG version < 8.1
is in use, so index and primary key constraint reflection now work
on these versions.
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e Please enter the commit message for your changes. Lines starting
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both _resolve_type_affinity() directly as well as round trip tests fully.
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types; such as if it encounters a string like ``INTEGER(5)``, the
:class:`.INTEGER` type will be instantiated without the "5" being included,
based on detecting a ``TypeError`` on the first attempt.
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SQLite allows column types that aren't technically understood in sqlite
by using 'data affinity', which is an algorithm for converting column
types in to some sort of useful type that can be stored and retrieved
from the db. Unfortunatly, this breaks reflection since we (previously)
expected a sqlite db to reflect column types that we permit in the
`ischema_names` for that dialect.
This patch changes the logic for 'unknown' column types during
reflection to instead run through SQLite's data affinity algorithm, and
assigns appropriate types from that.
It also expands the matching for column type to include column types
with spaces (strongly discouraged but allowed by sqlite) and also
completely empty column types (in which case the NullType is assigned,
which sqlite will treat as a Blob - or rather, Blob is treated as
NullType). These changes mean that SQLite will never raise an error for
an unknown type during reflection - there will always be some 'useful'
type returned, which follows the spirit of SQLite (accomodation before
sanity!).
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python_type for ARRAY (PGArray)
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- pep8 cleanup
- fix tests for "changed" column
- document that "changed" is optional
- changelog
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about non-equality operators in general.
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sections
- convert all paramter references in relationship documentation to :paramref:
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hstore extension. #2959
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