Mike Bayer [Sat, 9 Oct 2021 22:56:25 +0000 (18:56 -0400)]
update versioned rows examples for 1.4
Repaired the examples in examples/versioned_rows to use SQLAlchemy 1.4 APIs
correctly; these examples had been missed when API changes like removing
"passive" from ``Session.is_modified()`` were made as well as the
``do_orm_execute()`` event hook were added.
Mike Bayer [Wed, 6 Oct 2021 22:51:08 +0000 (18:51 -0400)]
fixes for usage of the null() and similar constants
Adjusted the "column disambiguation" logic that's new in 1.4, where the
same expression repeated gets an "extra anonymous" label, so that the logic
more aggressively deduplicates those labels when the repeated element
is the same Python expression object each time, as occurs in cases like
when using "singleton" values like :func:`_sql.null`. This is based on
the observation that at least some databases (e.g. MySQL, but not SQLite)
will raise an error if the same label is repeated inside of a subquery.
Related to :ticket:`7153`, fixed an issue where result column lookups
would fail for "adapted" SELECT statements that selected for
"constant" value expressions most typically the NULL expression,
as would occur in such places as joined eager loading in conjunction
with limit/offset. This was overall a regression due to issue
:ticket:`6259` which removed all "adaption" for constants like NULL,
"true", and "false", but this broke the case where the same adaption
logic were used to match the constant to a labeled expression referring
to the constant in a subquery.
Bugfix: MySQL expression: may be bindparam or other expression
Fixed issue in MySQL :func:`_mysql.match` construct where passing a clause
expression such as :func:`_sql.bindparam` or other SQL expression for the
"against" parameter would fail. Pull request courtesy Anton Kovalevich.
Mike Bayer [Tue, 5 Oct 2021 15:46:54 +0000 (11:46 -0400)]
Add new section clarifying DBAPI autocommit more fully
Make sure it's documented that autocommit isolation level
is not a connection-level setting, and does not interact with
the connection's notion of a transaction.
Mike Bayer [Fri, 1 Oct 2021 22:04:46 +0000 (18:04 -0400)]
disallow adding to identity map that's been discarded
Fixed bug where iterating a :class:`.Result` from a :class:`_orm.Session`
after that :class:`_orm.Session` were closed would partially attach objects
to that session in an essentially invalid state. It now raises an exception
with a link to new documentation if an **un-buffered** result is iterated
from a :class:`_orm.Session` that was closed or otherwise had the
:meth:`_orm.Session.expunge_all` method called after that :class:`.Result`
was generated. The "prebuffer_rows" execution option, as is used by the
asyncio extension, may be used to produce a :class:`.Result` where the ORM
objects are prebuffered, and in this case iterating the result will produce
a series of detached objects.
Mike Bayer [Mon, 4 Oct 2021 15:21:35 +0000 (11:21 -0400)]
repair any_() / all_() "implicit flip" behavior for None
Fixed an inconsistency in the any_() / all_() functions / methods where the
special behavior these functions have of "flipping" the expression such
that the "ANY" / "ALL" expression is always on the right side would not
function if the comparison were against the None value, that is,
"column.any_() == None" should produce the same SQL expression as "null()
== column.any_()". Added more docs to clarify this as well, plus mentions
that any_() / all_() generally supersede the ARRAY version "any()" /
"all()".
Mike Bayer [Sat, 2 Oct 2021 15:53:55 +0000 (11:53 -0400)]
support utf8mb3 char encoding fully for mysqlclient, others
Fixes to accommodate for the MariaDB 10.6 series, including backwards
incompatible changes in both the mariadb-connector Python driver (supported
on SQLAlchemy 1.4 only) as well as the native 10.6 client libraries that
are used automatically by the mysqlclient DBAPI (applies to both 1.3 and
1.4). The "utf8mb3" encoding symbol is now reported by these client
libraries when the encoding is stated as "utf8", leading to lookup and
encoding errors within the MySQL dialect that does not expect this symbol.
Updates to both the MySQL base library to accommodate for this utf8mb3
symbol being reported as well as to the test suite. Thanks to Georg Richter
for support.
Ensure all SQLAlchemy exception can be properly pickled
Implemented proper ``__reduce__()`` methods for all SQLAlchemy exception
objects to ensure they all support clean round trips when pickling, as
exception objects are often serialized for the purposes of various
debugging tools.
Mike Bayer [Fri, 1 Oct 2021 16:53:40 +0000 (12:53 -0400)]
organize datetime types for correct impls
Fixed bug in SQL Server ``DATETIMEOFFSET`` where the ODBC implementation
would not generate the correct DDL, for cases where the type were converted
using the ``dialect.type_descriptor()`` method, the usage of which is
illustrated in some documented examples for :class:`.TypeDecorator`, though
not necessary for most datatypes. Regression was introduced by
:ticket:`6366`. As part of this change, the full list of SQL Server date
types have been amended to return a "dialect impl" that generates the same
DDL name as the supertype.
Mike Bayer [Fri, 1 Oct 2021 17:18:41 +0000 (13:18 -0400)]
indicate private use of URL.__new__ privately only
Fixed issue where the deprecation warning for the :class:`.URL` constructor
which indicates that the :meth:`.URL.create` method should be used would
not emit if a full positional argument list of seven arguments were passed;
additionally, validation of URL arguments will now occur if the constructor
is called in this way, which was being skipped previously.
Georg Richter [Thu, 30 Sep 2021 22:13:49 +0000 (18:13 -0400)]
correct charset for mariadb connector with mdb 10.6
Updated test suite to pass correctly for MariaDB 10.6 when using the
mariadb-connector driver, which made some adjustments to default encoding.
Pull request courtesy Georg Richter.
Use character set utf8mb4 instead of utf8:
1) Character set for mariadb connector is utf8mb4 and
cannot be changed.
2) Since MariaDB 10.6.1 utf8 is mapped to utf8mb3, and
will be mapped to utf8mb4 in 10.7, see [MDEV-8334](https://jira.mariadb.org/browse/MDEV-8334) (rename
utf8 to utf8mb3)
utf8mb4 character set support was added 12 years ago and
will work with all non eoled MariaDB server versions.
Gord Thompson [Thu, 12 Aug 2021 19:04:28 +0000 (13:04 -0600)]
Modernize tests - calling_mapper_directly
a few changes for py2k:
* map_imperatively() includes the check that a class
is being sent, this was only working for mapper() before
* the test suite didn't place the py2k "autouse" workaround
in the correct order, seemingly, tried to adjust the
per-test ordering setup in pytestplugin.py
Mike Bayer [Sat, 4 Sep 2021 16:12:46 +0000 (12:12 -0400)]
warn or deprecate for auto-aliasing in joins
An extra layer of warning messages has been added to the functionality
of :meth:`_orm.Query.join` and the ORM version of
:meth:`_sql.Select.join`, where a few places where "automatic aliasing"
continues to occur will now be called out as a pattern to avoid, mostly
specific to the area of joined table inheritance where classes that share
common base tables are being joined together without using explicit aliases.
One case emits a legacy warning for a pattern that's not recommended,
the other case is fully deprecated.
The automatic aliasing within ORM join() which occurs for overlapping
mapped tables does not work consistently with all APIs such as
``contains_eager()``, and rather than continue to try to make these use
cases work everywhere, replacing with a more user-explicit pattern
is clearer, less prone to bugs and simplifies SQLAlchemy's internals
further.
The warnings include links to the errors.rst page where each pattern is
demonstrated along with the recommended pattern to fix.
* Improved the exception message generated when configuring a mapping with
joined table inheritance where the two tables either have no foreign key
relationships set up, or where they have multiple foreign key relationships
set up. The message is now ORM specific and includes context that the
:paramref:`_orm.Mapper.inherit_condition` parameter may be needed
particularly for the ambiguous foreign keys case.
* Add explicit support in the _expect_warnings() assertion for nested
_expect_warnings calls
* generalize the NoCache fixture, which we also need to catch warnings
during compilation consistently
* generalize the __str__() method for the HasCode mixin so all warnings
and errors include the code link in their string
jonathan vanasco [Tue, 28 Sep 2021 15:23:40 +0000 (11:23 -0400)]
References: #4426
Updated elementtree example to replace the deprecated classical mappings
interface with the current `registry.map_imperatively()` version.
The examples STILL use classical mappings, so the ticket remains open.
This update merely removes the deprecated API in favor of the (temporary?) replacement.
Fixed regression due to #7024 where the reorganization of the "platform
machine" names for greenlet dependency mis-spelled "aarch64" and
additionally omitted uppercase "AMD64" as is needed for windows machines.
Pull request courtesy James Dow.
Mike Bayer [Wed, 22 Sep 2021 02:35:41 +0000 (22:35 -0400)]
coerce for multivalues keys
Fixed issue where using ORM column expressions as keys in the list of
dictionaries passed to :meth:`_sql.Insert.values` for "multi-valued insert"
would not be processed correctly into the correct column expressions.
Mike Bayer [Wed, 22 Sep 2021 01:12:15 +0000 (21:12 -0400)]
add note to "quote" regarding case insensitive table reflection
this note basically states that the use case requested in
issue #7026 is not supported. I'm not sure the note is
going to otherwise make sense to anyone.
The `warnings.filterwarnings` method inserts entries at the front of the filter list, and entries closer to the front of the list override entries later in the list, if both match a particular warning. (See https://docs.python.org/3/library/warnings.html)
The intended behavior is for all `RemovedIn20Warning` warnings to log and continue, except that specific warnings that match the defined regular expressions should be raised as exceptions. To accomplish this intent, the general filter must be inserted before the regular expression special cases.
The original order would work if `warnings.filterwarnings` for the default case were invoked with `append=True`, but the intent of the documentation is for this set of filters to be determinative (i.e. to override any conflicting pre-existing filters that may exist), so `append=True` should not be used.
Mike Bayer [Mon, 20 Sep 2021 17:43:21 +0000 (13:43 -0400)]
include setup_joins targets when scanning for FROM objects to clone
Fixed a two issues where combinations of ``select()`` and ``join()`` when
adapted to form a copy of the element would not completely copy the state
of all column objects associated with subqueries. A key problem this caused
is that usage of the :meth:`_sql.ClauseElement.params` method (which should
probably be moved into a legacy category as it is inefficient and error
prone) would leave copies of the old :class:`_sql.BindParameter` objects
around, leading to issues in correctly setting the parameters at execution
time.
Relax the Python version check for `__class_getitem__` tests
<!-- Provide a general summary of your proposed changes in the Title field above -->
### Description
`__class_getitem__` to support generics was introduced in Python 3.7.
In 3.9 some built-ins were made generic but the functionality
for user-defined classes has been there since 3.7.
### Checklist
<!-- go over following points. check them with an `x` if they do apply, (they turn into clickable checkboxes once the PR is submitted, so no need to do everything at once)
-->
This pull request is:
- [ ] A documentation / typographical error fix
- Good to go, no issue or tests are needed
- [x] A short code fix
- please include the issue number, and create an issue if none exists, which
must include a complete example of the issue. one line code fixes without an
issue and demonstration will not be accepted.
- Please include: `Fixes: #<issue number>` in the commit message
- please include tests. one line code fixes without tests will not be accepted.
- [ ] A new feature implementation
- please include the issue number, and create an issue if none exists, which must
include a complete example of how the feature would look.
- Please include: `Fixes: #<issue number>` in the commit message
- please include tests.
Federico Caselli [Tue, 31 Aug 2021 21:03:18 +0000 (23:03 +0200)]
Surface driver connection object when using a proxied dialect
Improve the interface used by adapted drivers, like the asyncio ones,
to access the actual connection object returned by the driver.
The :class:`_engine._ConnectionRecord` and
:class:`_engine._ConnectionFairy` now have two new attributes:
* ``dbapi_connection`` always represents a DBAPI compatible
object. For pep-249 drivers, this is the DBAPI connection as it always
has been, previously accessed under the ``.connection`` attribute.
For asyncio drivers that SQLAlchemy adapts into a pep-249 interface,
the returned object will normally be a SQLAlchemy adaption object
called :class:`_engine.AdaptedConnection`.
* ``driver_connection`` always represents the actual connection object
maintained by the third party pep-249 DBAPI or async driver in use.
For standard pep-249 DBAPIs, this will always be the same object
as that of the ``dbapi_connection``. For an asyncio driver, it will be
the underlying asyncio-only connection object.
The ``.connection`` attribute remains available and is now a legacy alias
of ``.dbapi_connection``.
Eric Masseran [Mon, 13 Sep 2021 17:45:57 +0000 (13:45 -0400)]
Implement nesting CTE
Added new parameter :meth:`_sql.HasCte.cte.nesting` to the
:class:`_sql.CTE` constructor and :meth:`_sql.HasCTE.cte` method, which
flags the CTE as one which should remain nested within an enclosing CTE,
rather than being moved to the top level of the outermost SELECT. While in
the vast majority of cases there is no difference in SQL functionality,
users have identified various edge-cases where true nesting of CTE
constructs is desirable. Much thanks to Eric Masseran for lots of work on
this intricate feature.
Added initial support for the ``asyncmy`` asyncio database driver for MySQL
and MariaDB. This driver is very new, however appears to be the only
current alternative to the ``aiomysql`` driver which currently appears to
be unmaintained and is not working with current Python versions. Much
thanks to long2ice for the pull request for this dialect.
Mike Bayer [Thu, 16 Sep 2021 17:38:11 +0000 (13:38 -0400)]
use the stack for insert_from_select
Fixed issue related to new ``add_cte()`` feature where pairing two
"INSERT..FROM SELECT" statements simultaneously would lose track of the two
independent SELECT statements, leading to the wrong SQL.
Daniel Black [Sun, 12 Sep 2021 05:17:50 +0000 (01:17 -0400)]
test update_nowait - added support in MariaDB-10.3
<!-- Provide a general summary of your proposed changes in the Title field above -->
MariaDB supported NOWAIT in 10.3.
ref: https://mariadb.com/kb/en/wait-and-nowait/
This pull request is:
- [X] very trivial test change
- [ ] A documentation / typographical error fix
- Good to go, no issue or tests are needed
- [ ] A short code fix
- please include the issue number, and create an issue if none exists, which
must include a complete example of the issue. one line code fixes without an
issue and demonstration will not be accepted.
- Please include: `Fixes: #<issue number>` in the commit message
- please include tests. one line code fixes without tests will not be accepted.
- [ ] A new feature implementation
- please include the issue number, and create an issue if none exists, which must
include a complete example of how the feature would look.
- Please include: `Fixes: #<issue number>` in the commit message
- please include tests.
projects / thirdparty / sqlalchemy / sqlalchemy.git / log
