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| Name: python311-SQLAlchemy1 | Distribution: SUSE Linux Enterprise 15 |
| Version: 1.4.49 | Vendor: SUSE LLC <https://www.suse.com/> |
| Release: 150600.1.3 | Build date: Mon Apr 29 19:46:31 2024 |
| Group: Unspecified | Build host: xinomavro |
| Size: 14233888 | Source RPM: python-SQLAlchemy1-1.4.49-150600.1.3.src.rpm |
| Packager: https://www.suse.com/ | |
| Url: https://www.sqlalchemy.org | |
| Summary: Database Abstraction Library | |
SQLAlchemy is an Object Relational Mappper (ORM) that provides a flexible, high-level interface to SQL databases. Database and domain concepts are decoupled, allowing both sides maximum flexibility and power. SQLAlchemy provides a powerful mapping layer that can work as automatically or as manually as you choose, determining relationships based on foreign keys or letting you define the join conditions explicitly, to bridge the gap between database and domain.
MIT
* Mon Sep 25 2023 [email protected]
- update to 1.4.49
* support for python3.12
* see https://docs.sqlalchemy.org/en/20/changelog/changelog_14.html#change-1.4.49
* Tue May 09 2023 [email protected]
- Properly advertise this package also as python-SQLAlchemy.
* Sat May 06 2023 [email protected]
- remove parallel testing, too unstable
- readd provides which is needed to select between 1.x and 2.x
* Thu May 04 2023 [email protected]
- rename to SQLAlchemy1
* Fri Apr 21 2023 [email protected]
- add sle15_python_module_pythons (jsc#PED-68)
* Thu Apr 13 2023 [email protected]
- Make calling of %{sle15modernpython} optional.
* Wed Feb 15 2023 [email protected]
- update to 1.4.46:
* A new deprecation “uber warning” is now emitted at runtime the
first time any SQLAlchemy 2.0 deprecation warning would
normally be emitted, but the SQLALCHEMY_WARN_20 environment
variable is not set.
see https://docs.sqlalchemy.org/en/20/changelog/changelog_14.html#change-1.4.46
* Mon Jan 02 2023 [email protected]
- update to 1.4.45:
see https://docs.sqlalchemy.org/en/20/changelog/changelog_14.html#change-1.4.45
* Sat Oct 22 2022 [email protected]
- update to version 1.4.42:
* orm
+ The Session.execute.bind_arguments dictionary is no longer
mutated when passed to 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 Session.get_bind() method would be incorrectly referring to
the Select construct used for the “fetch” synchronization
strategy, when the actual query being emitted was a Delete or
Update. This would interfere with recipes for “routing
sessions”. References: #8614
+ A warning is emitted in ORM configurations when an explicit
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. References: #7094
+ 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. References: #7545
+ Fixed regression for 1.4 in contains_eager() where the “wrap in
subquery” logic of joinedload() would be inadvertently triggered
for use of the 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 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.
References: #8569
+ 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
values such as PostgreSQL JSONB, the non-evaluable condition
would fail to be detected correctly. The evaluator now limits
the use of math mutation operators to numeric types only, with
the exception of “+” that continues to work for strings as
well. SQLAlchemy 2.0 may alter this further by fetching the SET
values completely rather than using evaluation. References:
[#8507]
* engine
+ Fixed issue where mixing “*” with additional explicitly-named
column expressions within the columns clause of a select()
construct would cause result-column targeting to sometimes
consider the label name or other non-repeated names to be an
ambiguous target. References: #8536
* asyncio
+ Improved implementation of asyncio.shield() used in context
managers as added in #8145, such that the “close” operation is
enclosed within an asyncio.Task which is then strongly
referenced as the operation proceeds. This is per Python
documentation indicating that the task is otherwise not strongly
referenced. References: #8516
* postgresql
+ aggregate_order_by now supports cache generation. References:
[#8574]
* mysql
+ Adjusted the regular expression used to match “CREATE VIEW” when
testing for views to work more flexibly, no longer requiring the
special keyword “ALGORITHM” in the middle, which was intended to
be optional but was not working correctly. The change allows
view reflection to work more completely on MySQL-compatible
variants such as StarRocks. Pull request courtesy John Bodley.
References: #8588
* mssql
+ Fixed yet another regression in SQL Server isolation level fetch
(see #8231, #8475), this time with “Microsoft Dynamics CRM
Database via Azure Active Directory”, which apparently lacks the
system_views view entirely. Error catching has been extended
that under no circumstances will this method ever fail, provided
database connectivity is present. References: #8525
- Also remove the conditional definition of python_module.
* Sat Sep 17 2022 [email protected]
- update to 1.4.41:
* Fixed issue where use of the :func:`_sql.table` construct, passing a string
for the :paramref:`_sql.table.schema` parameter, would fail to take the
"schema" string into account when producing a cache key, thus leading to
caching collisions if multiple, same-named :func:`_sql.table` constructs
with different schemas were used.
* Fixed event listening issue where event listeners added to a superclass
would be lost if a subclass were created which then had its own listeners
associated. The practical example is that of the :class:`.sessionmaker`
class created after events have been associated with the
:class:`_orm.Session` class.
* Hardened the cache key strategy for the :func:`_orm.aliased` and
:func:`_orm.with_polymorphic` constructs. While no issue involving actual
statements being cached can easily be demonstrated (if at all), these two
constructs were not including enough of what makes them unique in their
cache keys for caching on the aliased construct alone to be accurate.
* Fixed regression appearing in the 1.4 series where a joined-inheritance
query placed as a subquery within an enclosing query for that same entity
would fail to render the JOIN correctly for the inner query. The issue
manifested in two different ways prior and subsequent to version 1.4.18
(related issue :ticket:`6595`), in one case rendering JOIN twice, in the
other losing the JOIN entirely. To resolve, the conditions under which
"polymorphic loading" are applied have been scaled back to not be invoked
for simple joined inheritance queries.
* Fixed issue in :mod:`sqlalchemy.ext.mutable` extension where collection
links to the parent object would be lost if the object were merged with
:meth:`.Session.merge` while also passing :paramref:`.Session.merge.load`
as False.
* Fixed issue involving :func:`_orm.with_loader_criteria` where a closure
variable used as bound parameter value within the lambda would not carry
forward correctly into additional relationship loaders such as
:func:`_orm.selectinload` and :func:`_orm.lazyload` after the statement
were cached, using the stale originally-cached value instead.
* Fixed regression caused by the fix for :ticket:`8231` released in 1.4.40
where connection would fail if the user did not have permission to query
the ``dm_exec_sessions`` or ``dm_pdw_nodes_exec_sessions`` system views
when trying to determine the current transaction isolation level.
* Integrated support for asyncpg's ``terminate()`` method call for cases
where the connection pool is recycling a possibly timed-out connection,
where a connection is being garbage collected that wasn't gracefully
* Wed Aug 17 2022 [email protected]
- update to version 1.4.40:
* orm
+ [orm] [bug] Fixed issue where referencing a CTE multiple times
in conjunction with a polymorphic SELECT could result in
multiple “clones” of the same CTE being constructed, which would
then trigger these two CTEs as duplicates. To resolve, the two
CTEs are deep-compared when this occurs to ensure that they are
equivalent, then are treated as equivalent. References: #8357
+ [orm] [bug] A select() construct that is passed a sole ‘*’
argument for SELECT *, either via string, text(), or
literal_column(), will be interpreted as a Core-level SQL
statement rather than as an ORM level statement. This is so that
the *, when expanded to match any number of columns, will result
in all columns returned in the result. the ORM- level
interpretation of select() needs to know the names and types of
all ORM columns up front which can’t be achieved when '*' is
used. If '* is used amongst other expressions simultaneously
with an ORM statement, an error is raised as this can’t be
interpreted correctly by the ORM. References: #8235
* orm declarative
+ [orm] [declarative] [bug] Fixed issue where a hierarchy of
classes set up as an abstract or mixin declarative classes could
not declare standalone columns on a superclass that would then
be copied correctly to a declared_attr callable that wanted to
make use of them on a descendant class. References: #8190
* engine
+ [engine] [usecase] Implemented new
Connection.execution_options.yield_per execution option for
Connection in Core, to mirror that of the same yield_per option
available in the ORM. The option sets both the
Connection.execution_options.stream_results option at the same
time as invoking Result.yield_per(), to provide the most common
streaming result configuration which also mirrors that of the
ORM use case in its usage pattern. See also: Using Server Side
Cursors (a.k.a. stream results) - revised documentation
+ [engine] [bug] Fixed bug in Result where the usage of a buffered
result strategy would not be used if the dialect in use did not
support an explicit “server side cursor” setting, when using
Connection.execution_options.stream_results. This is in error as
DBAPIs such as that of SQLite and Oracle already use a
non-buffered result fetching scheme, which still benefits from
usage of partial result fetching. The “buffered” strategy is now
used in all cases where
Connection.execution_options.stream_results is set.
+ [engine] [bug] Added FilterResult.yield_per() so that result
implementations such as MappingResult, ScalarResult and
AsyncResult have access to this method. References: #8199
* sql
+ [sql] [bug] Adjusted the SQL compilation for string containment
functions .contains(), .startswith(), .endswith() to force the
use of the string concatenation operator, rather than relying
upon the overload of the addition operator, so that non-standard
use of these operators with for example bytestrings still
produces string concatenation operators. References: #8253
* mypy
+ [mypy] [bug] Fixed a crash of the mypy plugin when using a
lambda as a Column default. Pull request curtesy of tchapi.
References: #8196
* asyncio
+ [asyncio] [bug] Added asyncio.shield() to the connection and
session release process specifically within the __aexit__()
context manager exit, when using AsyncConnection or AsyncSession
as a context manager that releases the object when the context
manager is complete. This appears to help with task cancellation
when using alternate concurrency libraries such as anyio, uvloop
that otherwise don’t provide an async context for the connection
pool to release the connection properly during task
cancellation. References: #8145
* postgresql
+ [postgresql] [bug] Fixed issue in psycopg2 dialect where the
“multiple hosts” feature implemented for #4392, where multiple
host:port pairs could be passed in the query string as
?host=host1:port1&host=host2:port2&host=host3:port3 was not
implemented correctly, as it did not propagate the “port”
parameter appropriately. Connections that didn’t use a different
“port” likely worked without issue, and connections that had
“port” for some of the entries may have incorrectly passed on
that hostname. The format is now corrected to pass hosts/ports
appropriately. As part of this change, maintained support for
another multihost style that worked unintentionally, which is
comma-separated ?host=h1,h2,h3&port=p1,p2,p3. This format is
more consistent with libpq’s query-string format, whereas the
previous format is inspired by a different aspect of libpq’s URI
format but is not quite the same thing. If the two styles are
mixed together, an error is raised as this is ambiguous.
References: #4392
* mssql
+ [mssql] [bug] Fixed issues that prevented the new usage patterns
for using DML with ORM objects presented at Using INSERT, UPDATE
and ON CONFLICT (i.e. upsert) to return ORM Objects from working
correctly with the SQL Server pyodbc dialect. References: #8210
+ [mssql] [bug] Fixed issue where the SQL Server dialect’s query
for the current isolation level would fail on Azure Synapse
Analytics, due to the way in which this database handles
transaction rollbacks after an error has occurred. The initial
query has been modified to no longer rely upon catching an error
when attempting to detect the appropriate system
view. Additionally, to better support this database’s very
specific “rollback” behavior, implemented new parameter
ignore_no_transaction_on_rollback indicating that a rollback
should ignore Azure Synapse error ‘No corresponding transaction
found. (111214)’, which is raised if no transaction is present
in conflict with the Python DBAPI. Initial patch and valuable
debugging assistance courtesy of @ww2406. See also: Avoiding
transaction-related exceptions on Azure Synapse Analytics
References: #8231
* misc
+ [bug] [types] Fixed issue where TypeDecorator would not
correctly proxy the __getitem__() operator when decorating the
ARRAY datatype, without explicit workarounds. References: #7249
* Sat Jul 09 2022 [email protected]
- update to version 1.4.39:
* orm
+ [orm] [bug] [regression] Fixed regression caused by #8133 where
the pickle format for mutable attributes was changed, without a
fallback to recognize the old format, causing in-place upgrades
of SQLAlchemy to no longer be able to read pickled data from
previous versions. A check plus a fallback for the old format is
now in place. References: #8133
- changes from version 1.4.38:
* orm
+ [orm] [bug] [regression] Fixed regression caused by #8064 where
a particular check for column correspondence was made too
liberal, resulting in incorrect rendering for some ORM
subqueries such as those using PropComparator.has() or
PropComparator.any() in conjunction with joined-inheritance
queries that also use legacy aliasing features. References:
[#8162]
+ [orm] [bug] [sql] Fixed an issue where GenerativeSelect.fetch()
would not be applied when executing a statement using the ORM.
References: #8091
+ [orm] [bug] Fixed issue where a with_loader_criteria() option
could not be pickled, as is necessary when it is carried along
for propagation to lazy loaders in conjunction with a caching
scheme. Currently, the only form that is supported as picklable
is to pass the “where criteria” as a fixed module-level callable
function that produces a SQL expression. An ad-hoc “lambda”
can’t be pickled, and a SQL expression object is usually not
fully picklable directly. References: #8109
* engine
+ [engine] [bug] Repaired a deprecation warning class decorator
that was preventing key objects such as Connection from having a
proper __weakref__ attribute, causing operations like Python
standard library inspect.getmembers() to fail. References:
[#8115]
* sql
+ [sql] [bug] Fixed multiple observed race conditions related to
lambda_stmt(), including an initial “dogpile” issue when a new
Python code object is initially analyzed among multiple
simultaneous threads which created both a performance issue as
well as some internal corruption of state. Additionally repaired
observed race condition which could occur when “cloning” an
expression construct that is also in the process of being
compiled or otherwise accessed in a different thread due to
memoized attributes altering the __dict__ while iterated, for
Python versions prior to 3.10; in particular the lambda SQL
construct is sensitive to this as it holds onto a single
statement object persistently. The iteration has been refined to
use dict.copy() with or without an additional iteration instead.
References: #8098
+ [sql] [bug] Enhanced the mechanism of Cast and other “wrapping”
column constructs to more fully preserve a wrapped Label
construct, including that the label name will be preserved in
the .c collection of a Subquery. The label was already able to
render in the SQL correctly on the outside of the construct
which it was wrapped inside. References: #8084
+ [sql] [bug] Adjusted the fix made for #8056 which adjusted the
escaping of bound parameter names with special characters such
that the escaped names were translated after the SQL compilation
step, which broke a published recipe on the FAQ illustrating how
to merge parameter names into the string output of a compiled
SQL string. The change restores the escaped names that come from
compiled.params and adds a conditional parameter to
SQLCompiler.construct_params() named escape_names that defaults
to True, restoring the old behavior by default. References:
[#8113]
* schema
+ [schema] [bug] Fixed bugs involving the Table.include_columns
and the Table.resolve_fks parameters on Table; these little-used
parameters were apparently not working for columns that refer to
foreign key constraints. In the first case, not-included
columns that refer to foreign keys would still attempt to create
a ForeignKey object, producing errors when attempting to resolve
the columns for the foreign key constraint within reflection;
foreign key constraints that refer to skipped columns are now
omitted from the table reflection process in the same way as
occurs for Index and UniqueConstraint objects with the same
conditions. No warning is produced however, as we likely want to
remove the include_columns warnings for all constraints in 2.0.
In the latter case, the production of table aliases or
subqueries would fail on an FK related table not found despite
the presence of resolve_fks=False; the logic has been repaired
so that if a related table is not found, the ForeignKey object
is still proxied to the aliased table or subquery (these
ForeignKey objects are normally used in the production of join
conditions), but it is sent with a flag that it’s not
resolvable. The aliased table / subquery will then work
normally, with the exception that it cannot be used to generate
a join condition automatically, as the foreign key information
is missing. This was already the behavior for such foreign key
constraints produced using non-reflection methods, such as
joining Table objects from different MetaData collections.
References: #8100, #8101
+ [schema] [bug] [mssql] Fixed issue where Table objects that made
use of IDENTITY columns with a Numeric datatype would produce
errors when attempting to reconcile the “autoincrement” column,
preventing construction of the Column from using the
Column.autoincrement parameter as well as emitting errors when
attempting to invoke an Insert construct. References: #8111
* extensions
+ [extensions] [bug] Fixed bug in Mutable where pickling and
unpickling of an ORM mapped instance would not correctly restore
state for mappings that contained multiple Mutable-enabled
attributes. References: #8133
* Sat Jun 04 2022 [email protected]
- update to 1.4.37
* details on https://docs.sqlalchemy.org/en/14/changelog/changelog_14.html#change-1.4.37
* Fixed issue where using a column_property() construct containing a subquery
against an already-mapped column attribute would not correctly apply
ORM-compilation behaviors to the subquery, including that the “IN” expression
added for a single-table inherits expression would fail to be included.
* Fixed issue where ORM results would apply incorrect key names to the
returned Row objects in the case where the set of columns to be selected
were changed, such as when using Select.with_only_columns().
* Fixed bug, likely a regression from 1.3, where usage of column names that
require bound parameter escaping, more concretely when using Oracle with
column names that require quoting such as those that start with an
underscore, or in less common cases with some PostgreSQL drivers when using
column names that contain percent signs, would cause the ORM versioning
feature to not work correctly if the versioning column itself had such a
name, as the ORM assumes certain bound parameter naming conventions that
were being interfered with via the quotes. This issue is related to #8053
and essentially revises the approach towards fixing this, revising the
original issue #5653 that created the initial implementation for
generalized bound-parameter name quoting.
* Wed May 04 2022 [email protected]
- update to 1.4.36:
* details on https://docs.sqlalchemy.org/en/14/changelog/changelog_14.html#change-1.4.36
* Fixed regression where the change made for #7861, released in version
1.4.33, that brought the Insert construct to be partially recognized as an
ORM-enabled statement
* Modified the DeclarativeMeta metaclass to pass cls.__dict__ into the
declarative scanning process to look for attributes, rather than the
separate dictionary passed to the type’s __init__() method
* Fixed a memory leak in the C extensions which could occur when calling upon
named members of Row when the member does not exist under Python 3
* Added a warning regarding a bug which exists in the Result.columns() method
when passing 0 for the index in conjunction with a Result that will return
a single ORM entity, which indicates that the current behavior of
Result.columns() is broken in this case as the Result object will yield scalar
values and not Row objects
* Fixed bug where ForeignKeyConstraint naming conventions using the
referred_column_0 naming convention key would not work if the foreign key
constraint were set up as a ForeignKey object rather than an explicit
ForeignKeyConstraint object.
* Wed Apr 20 2022 [email protected]
- python-mock is not required for build
* Sun Apr 10 2022 [email protected]
- update to version 1.4.35:
* sql
+ [sql] [bug] Fixed bug in newly implemented
FunctionElement.table_valued.joins_implicitly feature where the
parameter would not automatically propagate from the original
TableValuedAlias object to the secondary object produced when
calling upon TableValuedAlias.render_derived() or
TableValuedAlias.alias().
Additionally repaired these issues in TableValuedAlias:
- repaired a potential memory issue which could occur when
repeatedly calling TableValuedAlias.render_derived() against
successive copies of the same object (for .alias(), we
currently have to still continue chaining from the previous
element. not sure if this can be improved but this is standard
behavior for .alias() elsewhere)
- repaired issue where the individual element types would be
lost when calling upon TableValuedAlias.render_derived() or
TableValuedAlias.alias().
References: #7890
+ [sql] [bug] [regression] Fixed regression caused by #7823 which
impacted the caching system, such that bound parameters that had
been “cloned” within ORM operations, such as polymorphic
loading, would in some cases not acquire their correct
execution-time value leading to incorrect bind values being
rendered. References: #7903
- changes from version 1.4.34:
* orm
+ [orm] [bug] [regression] Fixed regression caused by #7861 where
invoking an Insert construct which contained ORM entities
directly via Session.execute() would fail. References: #7878
* postgresql
+ [postgresql] [bug] Scaled back a fix made for #6581 where
“executemany values” mode for psycopg2 were disabled for all “ON
CONFLICT” styles of INSERT, to not apply to the “ON CONFLICT DO
NOTHING” clause, which does not include any parameters and is
safe for “executemany values” mode. “ON CONFLICT DO UPDATE” is
still blocked from “executemany values” as there may be
additional parameters in the DO UPDATE clause that cannot be
batched (which is the original issue fixed by #6581).
References: #7880
- changes from version 1.4.33:
* orm
+ [orm] [usecase] Added with_polymorphic.adapt_on_names to the
with_polymorphic() function, which allows a polymorphic load
(typically with concrete mapping) to be stated against an
alternative selectable that will adapt to the original mapped
selectable on column names alone. References: #7805
+ [orm] [usecase] Added new attributes
UpdateBase.returning_column_descriptions and
UpdateBase.entity_description to allow for inspection of ORM
attributes and entities that are installed as part of an Insert,
Update, or Delete construct. The Select.column_descriptions
accessor is also now implemented for Core-only selectables.
References: #7861
+ [orm] [bug] [regression] Fixed regression in “dynamic” loader
strategy where the Query.filter_by() method would not be given
an appropriate entity to filter from, in the case where a
“secondary” table were present in the relationship being queried
and the mapping were against something complex such as a “with
polymorphic”. References: #7868
+ [orm] [bug] Fixed bug where composite() attributes would not
work in conjunction with the selectin_polymorphic() loader
strategy for joined table inheritance. References: #7801
+ [orm] [bug] [performance] Improvements in memory usage by the
ORM, removing a significant set of intermediary expression
objects that are typically stored when a copy of an expression
object is created. These clones have been greatly reduced,
reducing the number of total expression objects stored in memory
by ORM mappings by about 30%. References: #7823
+ [orm] [bug] Fixed issue where the selectin_polymorphic() loader
option would not work with joined inheritance mappers that don’t
have a fixed “polymorphic_on” column. Additionally added test
support for a wider variety of usage patterns with this
construct. References: #7799
+ [orm] [bug] Fixed bug in with_loader_criteria() function where
loader criteria would not be applied to a joined eager load that
were invoked within the scope of a refresh operation for the
parent object. References: #7862
+ [orm] [bug] Fixed issue where the Mapper would reduce a
user-defined Mapper.primary_key argument too aggressively, in
the case of mapping to a UNION where for some of the SELECT
entries, two columns are essentially equivalent, but in another,
they are not, such as in a recursive CTE. The logic here has
been changed to accept a given user-defined PK as given, where
columns will be related to the mapped selectable but no longer
“reduced” as this heuristic can’t accommodate for all
situations. References: #7842
* engine
+ [engine] [usecase] Added new parameter Engine.dispose.close,
defaulting to True. When False, the engine disposal does not
touch the connections in the old pool at all, simply dropping
the pool and replacing it. This use case is so that when the
original pool is transferred from a parent process, the parent
process may continue to use those connections.
See also
Using Connection Pools with Multiprocessing or os.fork() - revised documentation
References: #7815, #7877
+ [engine] [bug] Further clarified connection-level logging to
indicate the BEGIN, ROLLBACK and COMMIT log messages do not
actually indicate a real transaction when the AUTOCOMMIT
isolation level is in use; messaging has been extended to
include the BEGIN message itself, and the messaging has also
been fixed to accommodate when the Engine level
create_engine.isolation_level parameter was used directly.
References: #7853
* sql
+ [sql] [usecase] Added new parameter
FunctionElement.table_valued.joins_implicitly, for the
FunctionElement.table_valued() construct. This parameter
indicates that the given table-valued function implicitly joins
to the table it refers towards, essentially disabling the “from
linting” feature, i.e. the “cartesian product” warning, from
taking effect due to the presence of this parameter. May be used
for functions such as func.json_each(). References: #7845
+ [sql] [bug] The bindparam.literal_execute parameter now takes
part of the cache generation of a bindparam(), since it changes
the sql string generated by the compiler. Previously the correct
bind values were used, but the literal_execute would be ignored
on subsequent executions of the same query. References: #7876
+ [sql] [bug] [regression] Fixed regression caused by #7760 where
the new capabilities of TextualSelect were not fully implemented
within the compiler properly, leading to issues with composed
INSERT constructs such as “INSERT FROM SELECT” and “INSERT…ON
CONFLICT” when combined with CTE and textual statements.
References: #7798
* schema
+ [schema] [usecase] Added support so that the
Table.to_metadata.referred_schema_fn callable passed to
Table.to_metadata() may return the value BLANK_SCHEMA to
indicate that the referenced foreign key should be reset to
None. The RETAIN_SCHEMA symbol may also be returned from this
function to indicate “no change”, which will behave the same as
None currently does which also indicates no change. References:
[#7860]
* sqlite
+ [sqlite] [bug] [reflection] Fixed bug where the name of CHECK
constraints under SQLite would not be reflected if the name were
created using quotes, as is the case when the name uses mixed
case or special characters. References: #5463
* mssql
+ [mssql] [bug] [regression] Fixed regression caused by #7160
where FK reflection in conjunction with a low compatibility
level setting (compatibility level 80: SQL Server 2000) causes
an “Ambiguous column name” error. Patch courtesy @Lin-Your.
References: #7812
* misc
+ [bug] [ext] Improved the error message that’s raised for the
case where the association_proxy() construct attempts to access
a target attribute at the class level, and this access
fails. The particular use case here is when proxying to a hybrid
attribute that does not include a working class-level
implementation. References: #7827
* Sat Mar 12 2022 [email protected]
- update to version 1.4.32:
* orm
+ [orm] [bug] [regression] Fixed regression where the ORM
exception that is to be raised when an INSERT silently fails to
actually insert a row (such as from a trigger) would not be
reached, due to a runtime exception raised ahead of time due to
the missing primary key value, thus raising an uninformative
exception rather than the correct one. For 1.4 and above, a new
FlushError is added for this case that’s raised earlier than the
previous “null identity” exception was for 1.3, as a situation
where the number of rows actually INSERTed does not match what
was expected is a more critical situation in 1.4 as it prevents
batching of multiple objects from working correctly. This is
separate from the case where a newly fetched primary key is
fetched as NULL, which continues to raise the existing “null
identity” exception. References: #7594
+ [orm] [bug] Fixed issue where using a fully qualified path for
the classname in relationship() that nonetheless contained an
incorrect name for path tokens that were not the first token,
would fail to raise an informative error and would instead fail
randomly at a later step. References: #7697
* engine
+ [engine] [bug] Adjusted the logging for key SQLAlchemy
components including Engine, Connection to establish an
appropriate stack level parameter, so that the Python logging
tokens funcName and lineno when used in custom logging
formatters will report the correct information, which can be
useful when filtering log output; supported on Python 3.8 and
above. Pull request courtesy Markus Gerstel. References: #7612
* sql
+ [sql] [bug] Fixed type-related error messages that would fail
for values that were tuples, due to string formatting syntax,
including compile of unsupported literal values and invalid
boolean values. References: #7721
+ [sql] [bug] [mysql] Fixed issues in MySQL SET datatype as well
as the generic Enum datatype where the __repr__() method would
not render all optional parameters in the string output,
impacting the use of these types in Alembic autogenerate. Pull
request for MySQL courtesy Yuki Nishimine. References: #7598,
[#7720], #7789
+ [sql] [bug] The Enum datatype now emits a warning if the
Enum.length argument is specified without also specifying
Enum.native_enum as False, as the parameter is otherwise
silently ignored in this case, despite the fact that the Enum
datatype will still render VARCHAR DDL on backends that don’t
have a native ENUM datatype such as SQLite. This behavior may
change in a future release so that “length” is honored for all
non-native “enum” types regardless of the “native_enum” setting.
+ [sql] [bug] Fixed issue where the HasCTE.add_cte() method as
called upon a TextualSelect instance was not being accommodated
by the SQL compiler. The fix additionally adds more
“SELECT”-like compiler behavior to TextualSelect including that
DML CTEs such as UPDATE and INSERT may be accommodated.
References: #7760
* asyncio
+ [asyncio] [bug] Fixed issues where a descriptive error message
was not raised for some classes of event listening with an async
engine, which should instead be a sync engine instance.
+ [asyncio] [bug] Fixed issue where the AsyncSession.execute()
method failed to raise an informative exception if the
Connection.execution_options.stream_results execution option
were used, which is incompatible with a sync-style Result object
when using an asyncio calling style, as the operation to fetch
more rows would need to be awaited. An exception is now raised
in this scenario in the same way one was already raised when the
Connection.execution_options.stream_results option would be used
with the AsyncConnection.execute() method. Additionally, for
improved stability with state-sensitive database drivers such as
asyncmy, the cursor is now closed when this error condition is
raised; previously with the asyncmy dialect, the connection
would go into an invalid state with unconsumed server side
results remaining. References: #7667
* postgresql
+ [postgresql] [usecase] Added compiler support for the PostgreSQL
NOT VALID phrase when rendering DDL for the CheckConstraint,
ForeignKeyConstraint and ForeignKey schema constructs. Pull
request courtesy Gilbert Gilb’s. References: #7600
* mysql
+ [mysql] [bug] [regression] Fixed regression caused by #7518
where changing the syntax “SHOW VARIABLES” to “SELECT @@” broke
compatibility with MySQL versions older than 5.6, including
early 5.0 releases. While these are very old MySQL versions, a
change in compatibility was not planned, so version-specific
logic has been restored to fall back to “SHOW VARIABLES” for
MySQL server versions < 5.6. References: #7518
* mariadb
+ [mariadb] [bug] [regression] Fixed regression in
mariadbconnector dialect as of mariadb connector 1.0.10 where
the DBAPI no longer pre-buffers cursor.lastrowid, leading to
errors when inserting objects with the ORM as well as causing
non-availability of the CursorResult.inserted_primary_key
attribute. The dialect now fetches this value proactively for
situations where it applies. References: #7738
* sqlite
+ [sqlite] [usecase] Added support for reflecting SQLite inline
unique constraints where the column names are formatted with
SQLite “escape quotes” [] or `, which are discarded by the
database when producing the column name. References: #7736
+ [sqlite] [bug] Fixed issue where SQLite unique constraint
reflection would fail to detect a column-inline UNIQUE
constraint where the column name had an underscore in its name.
References: #7736
* oracle
+ [oracle] [bug] Fixed issue in Oracle dialect where using a
column name that requires quoting when written as a bound
parameter, such as "_id", would not correctly track a Python
generated default value due to the bound-parameter rewriting
missing this value, causing an Oracle error to be raised.
References: #7676
+ [oracle] [bug] [regression] Added support to parse “DPI” error
codes from cx_Oracle exception objects such as DPI-1080 and
DPI-1010, both of which now indicate a disconnect scenario as of
cx_Oracle 8.3. References: #7748
* tests
+ [tests] [bug] Improvements to the test suite’s integration with
pytest such that the “warnings” plugin, if manually enabled,
will not interfere with the test suite, such that third parties
can enable the warnings plugin or make use of the -W parameter
and SQLAlchemy’s test suite will continue to pass. Additionally,
modernized the detection of the “pytest-xdist” plugin so that
plugins can be globally disabled using
PYTEST_DISABLE_PLUGIN_AUTOLOAD=1 without breaking the test suite
if xdist were still installed. Warning filters that promote
deprecation warnings to errors are now localized to
SQLAlchemy-specific warnings, or within SQLAlchemy-specific
sources for general Python deprecation warnings, so that
non-SQLAlchemy deprecation warnings emitted from pytest plugins
should also not impact the test suite. References: #7599
+ [tests] [bug] Made corrections to the default pytest
configuration regarding how test discovery is configured, to fix
issue where the test suite would not configure warnings
correctly and also attempt to load example suites as tests, in
the specific case where the SQLAlchemy checkout were located in
an absolute path that had a super-directory named “test”.
References: #7045
* Sat Jan 29 2022 [email protected]
- specfile:
* update copyright year
- update to version 1.4.31:
* orm
+ [orm] [bug] Fixed issue in Session.bulk_save_objects() where the
sorting that takes place when the preserve_order parameter is
set to False would sort partially on Mapper objects, which is
rejected in Python 3.11. References: #7591
* postgresql
+ [postgresql] [bug] [regression] Fixed regression where the
change in #7148 to repair ENUM handling in PostgreSQL broke the
use case of an empty ARRAY of ENUM, preventing rows that
contained an empty array from being handled correctly when
fetching results. References: #7590
* mysql
+ [mysql] [bug] [regression] Fixed regression in asyncmy dialect
caused by #7567 where removal of the PyMySQL dependency broke
binary columns, due to the asyncmy dialect not being properly
included within CI tests. References: #7593
* mssql
+ [mssql] Added support for FILESTREAM when using VARBINARY(max)
in MSSQL. References: #7243
- changes from version 1.4.30:
* orm
+ [orm] [bug] Fixed issue in joined-inheritance load of additional
attributes functionality in deep multi-level inheritance where
an intermediary table that contained no columns would not be
included in the tables joined, instead linking those tables to
their primary key identifiers. While this works fine, it
nonetheless in 1.4 began producing the cartesian product
compiler warning. The logic has been changed so that these
intermediary tables are included regardless. While this does
include additional tables in the query that are not technically
necessary, this only occurs for the highly unusual case of deep
3+ level inheritance with intermediary tables that have no non
primary key columns, potential performance impact is therefore
expected to be negligible. References: #7507
+ [orm] [bug] Fixed issue where calling upon
registry.map_imperatively() more than once for the same class
would produce an unexpected error, rather than an informative
error that the target class is already mapped. This behavior
differed from that of the mapper() function which does report an
informative message already. References: #7579
+ [orm] [bug] [asyncio] Added missing method
AsyncSession.invalidate() to the AsyncSession class.
References: #7524
+ [orm] [bug] [regression] Fixed regression which appeared in
1.4.23 which could cause loader options to be mis-handled in
some cases, in particular when using joined table inheritance in
combination with the polymorphic_load="selectin" option as well
as relationship lazy loading, leading to a TypeError.
References: #7557
+ [orm] [bug] [regression] Fixed ORM regression where calling the
aliased() function against an existing aliased() construct would
fail to produce correct SQL if the existing construct were
against a fixed table. The fix allows that the original
aliased() construct is disregarded if it were only against a
table that’s now being replaced. It also allows for correct
behavior when constructing a aliased() without a selectable
argument against a aliased() that’s against a subuquery, to
create an alias of that subquery (i.e. to change its name). The
nesting behavior of aliased() remains in place for the case
where the outer aliased() object is against a subquery which in
turn refers to the inner aliased() object. This is a relatively
new 1.4 feature that helps to suit use cases that were
previously served by the deprecated Query.from_self() method.
References: #7576
+ [orm] [bug] Fixed issue where Select.correlate_except() method,
when passed either the None value or no arguments, would not
correlate any elements when used in an ORM context (that is,
passing ORM entities as FROM clauses), rather than causing all
FROM elements to be considered as “correlated” in the same way
which occurs when using Core-only constructs. References: #7514
+ [orm] [bug] [regression] Fixed regression from 1.3 where the
“subqueryload” loader strategy would fail with a stack trace if
used against a query that made use of Query.from_statement() or
Select.from_statement(). As subqueryload requires modifying the
original statement, it’s not compatible with the
“from_statement” use case, especially for statements made
against the text() construct. The behavior now is equivalent to
that of 1.3 and previously, which is that the loader strategy
silently degrades to not be used for such statements, typically
falling back to using the lazyload strategy. References: #7505
* sql
+ [sql] [bug] [postgresql] Added additional rule to the system
that determines TypeEngine implementations from Python literals
to apply a second level of adjustment to the type, so that a
Python datetime with or without tzinfo can set the timezone=True
parameter on the returned DateTime object, as well as Time. This
helps with some round-trip scenarios on type-sensitive
PostgreSQL dialects such as asyncpg, psycopg3 (2.0 only).
References: #7537
+ [sql] [bug] Added an informative error message when a method
object is passed to a SQL construct. Previously, when such a
callable were passed, as is a common typographical error when
dealing with method-chained SQL constructs, they were
interpreted as “lambda SQL” targets to be invoked at compilation
time, which would lead to silent failures. As this feature was
not intended to be used with methods, method objects are now
rejected. References: #7032
* mypy
+ [mypy] [bug] Fixed Mypy crash when running id daemon mode caused
by a missing attribute on an internal mypy Var instance.
References: #7321
* asyncio
+ [asyncio] [usecase] Added new method
AdaptedConnection.run_async() to the DBAPI connection interface
used by asyncio drivers, which allows methods to be called
against the underlying “driver” connection directly within a
sync-style function where the await keyword can’t be used, such
as within SQLAlchemy event handler functions. The method is
analogous to the AsyncConnection.run_sync() method which
translates async-style calls to sync-style. The method is useful
for things like connection-pool on-connect handlers that need to
invoke awaitable methods on the driver connection when it’s
first created. References: #7580
* postgresql
+ [postgresql] [usecase] Added string rendering to the UUID
datatype, so that stringifying a statement with “literal_binds”
that uses this type will render an appropriate string value for
the PostgreSQL backend. Pull request courtesy José Duarte.
References: #7561
+ [postgresql] [bug] [asyncpg] Improved support for asyncpg
handling of TIME WITH TIMEZONE, which was not fully implemented.
References: #7537
+ [postgresql] [bug] [mssql] [reflection] Fixed reflection of
covering indexes to report include_columns as part of the
dialect_options entry in the reflected index dictionary, thereby
enabling round trips from reflection->create to be
complete. Included columns continue to also be present under the
include_columns key for backwards compatibility. References:
[#7382]
+ [postgresql] [bug] Fixed handling of array of enum values which
require escape characters. References: #7418
+ mysql
+ [mysql] [change] Replace SHOW VARIABLES LIKE statement with
equivalent SELECT @@variable in MySQL and MariaDB dialect
initialization. This should avoid mutex contention caused by
SHOW VARIABLES, improving initialization performance.
References: #7518
+ [mysql] [bug] Removed unnecessary dependency on PyMySQL from the
asyncmy dialect. Pull request courtesy long2ice. References:
[#7567]
* Mon Dec 27 2021 [email protected]
- Update to 1.4.29:
- truly, just plenty of small bugfixes, see the changelog on the Web
https://docs.sqlalchemy.org/en/14/changelog/changelog_14.html#change-1.4.29
* Sat Dec 18 2021 [email protected]
- update to 1.4.28:
Bugfixes, see
* https://docs.sqlalchemy.org/en/14/changelog/changelog_14.html#change-1.4.28
* Sun Dec 05 2021 [email protected]
- update to 1.4.27:
Bugfixes
* see https://docs.sqlalchemy.org/en/14/changelog/changelog_14.html#change-1.4.27
* Wed Oct 27 2021 [email protected]
- update to version 1.4.26:
* a repair to the workings of the update() statement in an ORM context when
used with hybrid and composite attributes.
* Fixes for the with_loader_criteria() ORM option
* adjustments to the ORM Session interface to accommodate for new API features
* some new legacy warnings for lesser used patterns with Query.join()
* SQL / ORM fixes for the use case of selecting from repeated, non-labeled
column expressions, typically the null() construct when used as a
placeholder in a UNION statement.
* For PostgreSQL, refinements to the "expanding IN" SQL feature when used
with PostgreSQL ARRAY datatypes as well as fixes for the mostly
PostgreSQL-specific any_() and all_() column methods.
* For MySQL, repaired support for new behaviors in MariaDB 10.6
* For SQL Server, reflection fixes and improvements for foreign key
constraints as well table /view detection.
* Sat Oct 16 2021 [email protected]
- update to version 1.4.25:
* Fixed regression due to :ticket:`7024` where the reorganization of the
"platform machine" names used by the ``greenlet`` dependency mis-spelled
"aarch64" and additionally omitted uppercase "AMD64" as is needed for
Windows machines.
* Fixed a bug in :meth:`_asyncio.AsyncSession.execute` and
:meth:`_asyncio.AsyncSession.stream` that required ``execution_options``
to be an instance of ``immutabledict`` when defined. It now
correctly accepts any mapping.
* Improve the interface used by adapted drivers, like the asyncio ones,
to access the actual connection object returned by the driver.
* Implemented missing methods in :class:`_functions.FunctionElement` which,
while unused, would lead pylint to report them as unimplemented abstract
methods.
* Fixed an issue where :meth:`_reflection.has_table` returned
``True`` for local temporary tables that actually belonged to a
different SQL Server session (connection). An extra check is now
performed to ensure that the temp table detected is in fact owned
by the current session.
* Fixed issue where the ability of the
:meth:`_events.ConnectionEvents.before_execute` method to alter the SQL
statement object passed, returning the new object to be invoked, was
inadvertently removed. This behavior has been restored.
* Ensure that ``str()`` is called on the an
:paramref:`_url.URL.create.password` argument, allowing usage of objects
that implement the ``__str__()`` method as password attributes. Also
clarified that one such object is not appropriate to dynamically change the
password for each database connection; the approaches at
:ref:`engines_dynamic_tokens` should be used instead.
* Fixed ORM issue where column expressions passed to ``query()`` or
ORM-enabled ``select()`` would be deduplicated on the identity of the
object, such as a phrase like ``select(A.id, null(), null())`` would
produce only one "NULL" expression, which previously was not the case in
1.3. However, the change also allows for ORM expressions to render as given
as well, such as ``select(A.data, A.data)`` will produce a result row with
two columns.
* Fixed issue where mypy plugin would crash when interpreting a
``query_expression()`` construct.
* Added new methods :meth:`_orm.Session.scalars`,
* Added loader options to :meth:`_orm.Session.merge` and
:meth:`_asyncio.AsyncSession.merge` via a new
:paramref:`_orm.Session.merge.options` parameter, which will apply the
given loader options to the ``get()`` used internally by merge, allowing
eager loading of relationships etc. to be applied when the merge process
loads a new object. Pull request courtesy Daniel Stone.
* 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.
* 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.
* Thu Jul 22 2021 [email protected]
- update to version 1.4.22:
* orm
+ Fixed issue in new Table.table_valued() method where the
resulting TableValuedColumn construct would not respond
correctly to alias adaptation as is used throughout the ORM,
such as for eager loading, polymorphic loading, etc.
+ Fixed issue where usage of the Result.unique() method with an
ORM result that included column expressions with unhashable
types, such as JSON or ARRAY using non-tuples would silently
fall back to using the id() function, rather than raising an
error. This now raises an error when the Result.unique() method
is used in a 2.0 style ORM query. Additionally, hashability is
assumed to be True for result values of unknown type, such as
often happens when using SQL functions of unknown return type;
if values are truly not hashable then the hash() itself will
raise.
+ For legacy ORM queries, since the legacy Query object uniquifies
in all cases, the old rules remain in place, which is to use
id() for result values of unknown type as this legacy uniquing
is mostly for the purpose of uniquing ORM entities and not
column values.
+ Fixed an issue where clearing of mappers during things like test
suite teardowns could cause a “dictionary changed size” warning
during garbage collection, due to iteration of a
weak-referencing dictionary. A list() has been applied to
prevent concurrent GC from affecting this operation.
+ Fixed critical caching issue where the ORM’s persistence feature
using INSERT..RETURNING would cache an incorrect query when
mixing the “bulk save” and standard “flush” forms of INSERT.
* engine
+ Added some guards against KeyError in the event system to
accommodate the case that the interpreter is shutting down at
the same time Engine.dispose() is being called, which would
cause stack trace warnings.
* sql
+ Fixed issue where use of the case.whens parameter passing a
dictionary positionally and not as a keyword argument would emit
a 2.0 deprecation warning, referring to the deprecation of
passing a list positionally. The dictionary format of “whens”,
passed positionally, is still supported and was accidentally
marked as deprecated.
+ Fixed issue where type-specific bound parameter handlers would
not be called upon in the case of using the Insert.values()
method with the Python None value; in particular, this would be
noticed when using the JSON datatype as well as related
PostgreSQL specific types such as JSONB which would fail to
encode the Python None value into JSON null, however the issue
was generalized to any bound parameter handler in conjunction
with this specific method of Insert.
- changes from version 1.4.21:
* orm
+ Modified the approach used for history tracking of scalar object
relationships that are not many-to-one, i.e. one-to-one
relationships that would otherwise be one-to-many. When
replacing a one-to-one value, the “old” value that would be
replaced is no longer loaded immediately, and is instead handled
during the flush process. This eliminates an historically
troublesome lazy load that otherwise often occurs when assigning
to a one-to-one attribute, and is particularly troublesome when
using “lazy=’raise’” as well as asyncio use cases.
+ This change does cause a behavioral change within the
AttributeEvents.set() event, which is nonetheless currently
documented, which is that the event applied to such a one-to-one
attribute will no longer receive the “old” parameter if it is
unloaded and the relationship.active_history flag is not set. As
is documented in AttributeEvents.set(), if the event handler
needs to receive the “old” value when the event fires off, the
active_history flag must be established either with the event
listener or with the relationship. This is already the behavior
with other kinds of attributes such as many-to-one and column
value references.
+ The change additionally will defer updating a backref on the
“old” value in the less common case that the “old” value is
locally present in the session, but isn’t loaded on the
relationship in question, until the next flush occurs. If this
causes an issue, again the normal relationship.active_history
flag can be set to True on the relationship.
+ Fixed regression caused in 1.4.19 due to #6503 and related
involving Query.with_entities() where the new structure used
would be inappropriately transferred to an enclosing Query when
making use of set operations such as Query.union(), causing the
JOIN instructions within to be applied to the outside query as
well.
+ Fixed regression which appeared in version 1.4.3 due to #6060
where rules that limit ORM adaptation of derived selectables
interfered with other ORM-adaptation based cases, in this case
when applying adaptations for a with_polymorphic() against a
mapping which uses a column_property() which in turn makes use
of a scalar select that includes a aliased() object of the
mapped table.
+ Fixed ORM regression where ad-hoc label names generated for
hybrid properties and potentially other similar types of
ORM-enabled expressions would usually be propagated outwards
through subqueries, allowing the name to be retained in the
final keys of the result set even when selecting from
subqueries. Additional state is now tracked in this case that
isn’t lost when a hybrid is selected out of a Core select /
subquery.
* sql
+ Added new method HasCTE.add_cte() to each of the select(),
insert(), update() and delete() constructs. This method will add
the given CTE as an “independent” CTE of the statement, meaning
it renders in the WITH clause above the statement
unconditionally even if it is not otherwise referenced in the
primary statement. This is a popular use case on the PostgreSQL
database where a CTE is used for a DML statement that runs
against database rows independently of the primary statement.
+ Fixed issue in CTE constructs where a recursive CTE that
referred to a SELECT that has duplicate column names, which are
typically deduplicated using labeling logic in 1.4, would fail
to refer to the deduplicated label name correctly within the
WITH clause.
+ Fixed regression where the tablesample() construct would fail to
be executable when constructed given a floating-point sampling
value not embedded within a SQL function.
* postgresql
+ Fixed issue in Insert.on_conflict_do_nothing() and
Insert.on_conflict_do_update() where the name of a unique
constraint passed as the constraint parameter would not be
properly truncated for length if it were based on a naming
convention that generated a too-long name for the PostgreSQL max
identifier length of 63 characters, in the same way which occurs
within a CREATE TABLE statement.
+ Fixed issue where the PostgreSQL ENUM datatype as embedded in
the ARRAY datatype would fail to emit correctly in create/drop
when the schema_translate_map feature were also in
use. Additionally repairs a related issue where the same
schema_translate_map feature would not work for the ENUM
datatype in combination with a CAST, that’s also intrinsic to
how the ARRAY(ENUM) combination works on the PostgreSQL dialect.
+ Fixed issue in Insert.on_conflict_do_nothing() and
Insert.on_conflict_do_update() where the name of a unique
constraint passed as the constraint parameter would not be
properly quoted if it contained characters which required
quoting.
* mssql
+ Fixed regression where the special dotted-schema name handling
for the SQL Server dialect would not function correctly if the
dotted schema name were used within the schema_translate_map
feature.
* Sun Jul 11 2021 [email protected]
- update to version 1.4.20:
* orm
+ [orm] [bug] [regression] Fixed regression in ORM regarding
an internal reconstitution step for the with_polymorphic()
construct, when the user-facing object is garbage collected
as the query is processed. The reconstitution was not
ensuring the sub-entities for the “polymorphic” case were
handled, leading to an AttributeError.
References: #6680
+ [orm] [bug] [regression] Adjusted Query.union() and similar
set operations to be correctly compatible with the new
capabilities just added in #6661, with SQLAlchemy 1.4.19,
such that the SELECT statements rendered as elements of the
UNION or other set operation will include directly mapped
columns that are mapped as deferred; this both fixes a
regression involving unions with multiple levels of nesting
that would produce a column mismatch, and also allows the
undefer() option to be used at the top level of such a Query
without having to apply the option to each of the elements
within the UNION.
References: #6678
+ [orm] [bug] Adjusted the check in the mapper for a callable
object that is used as a @validates validator function or a
@reconstructor reconstruction function, to check for
“callable” more liberally such as to accommodate objects
based on fundamental attributes like __func__ and __call___,
rather than testing for MethodType / FunctionType, allowing
things like cython functions to work properly. Pull request
courtesy Miłosz Stypiński.
References: #6538
* engine
+ [engine] [bug] Fixed an issue in the C extension for the Row
class which could lead to a memory leak in the unlikely case
of a Row object which referred to an ORM object that then was
mutated to refer back to the Row itself, creating a cycle.
The Python C APIs for tracking GC cycles has been added to
the native Row implementation to accommodate for this case.
References: #5348
+ [engine] [bug] Fixed old issue where a select() made against
the token “*”, which then yielded exactly one column, would
fail to correctly organize the cursor.description column name
into the keys of the result object.
References: #6665
* sql
+ [sql] [usecase] Add a impl parameter to PickleType
constructor, allowing any arbitary type to be used in place
of the default implementation of LargeBinary. Pull request
courtesy jason3gb. References: #6646
+ [sql] [bug] [orm] Fixed the class hierarchy for the Sequence
and the more general DefaultGenerator base, as these are
“executable” as statements they need to include Executable
in their hierarchy, not just StatementRole as was applied
arbitrarily to Sequence previously. The fix allows Sequence
to work in all .execute() methods including with
Session.execute() which was not working in the case that a
SessionEvents.do_orm_execute() handler was also established.
References: #6668
* schema
+ [schema] [bug] Fixed issue where passing None for the value
of Table.prefixes would not store an empty list, but rather
the constant None, which may be unexpected by third party
dialects. The issue is revealed by a usage in recent versions
of Alembic that are passing None for this value. Pull request
courtesy Kai Mueller. References: #6685
* mysql
+ [mysql] [usecase] Made a small adjustment in the table
reflection feature of the MySQL dialect to accommodate for
alternate MySQL-oriented databases such as TiDB which include
their own “comment” directives at the end of a constraint
directive within “CREATE TABLE” where the format doesn’t have
the additional space character after the comment, in this
case the TiDB “clustered index” feature. Pull request
courtesy Daniël van Eeden. References: #6659
* misc
+ [bug] [ext] [regression] Fixed regression in
sqlalchemy.ext.automap extension such that the use case of
creating an explicit mapped class to a table that is also the
relationship.secondary element of a relationship() that
automap will be generating would emit the “overlaps” warnings
introduced in 1.4 and discussed at relationship X will copy
column Q to column P, which conflicts with relationship(s):
‘Y’. While generating this case from automap is still subject
to the same caveats that the “overlaps” warning refers
towards, as automap is intended for more ad-hoc use cases,
the condition which produces the warning is disabled when a
many-to-many relationship with this particular pattern is
generated. References: #6679
- changes from version 1.4.19:
* orm
+ [orm] [bug] [regression] Fixed further regressions in the
same area as that of #6052 where loader options as well as
invocations of methods like Query.join() would fail if the
left side of the statement for which the option/join depends
upon were replaced by using the Query.with_entities() method,
or when using 2.0 style queries when using the
Select.with_only_columns() method. A new set of state has
been added to the objects which tracks the “left” entities
that the options / join were made against which is memoized
when the lead entities are changed. References: #6253, #6503
+ [orm] [bug] Refined the behavior of ORM subquery rendering
with regards to deferred columns and column properties to be
more compatible with that of 1.3 while also providing for
1.4’s newer features. As a subquery in 1.4 does not make use
of loader options, including undefer(), a subquery that is
against an ORM entity with deferred attributes will now
render those deferred attributes that refer directly to
mapped table columns, as these are needed in the outer SELECT
if that outer SELECT makes use of these columns; however a
deferred attribute that refers to a composed SQL expression
as we normally do with column_property() will not be part of
the subquery, as these can be selected explicitly if needed
in the subquery. If the entity is being SELECTed from this
subquery, the column expression can still render on “the
outside” in terms of the derived subquery columns. This
produces essentially the same behavior as when working with
1.3. However in this case the fix has to also make sure that
the .selected_columns collection of an ORM-enabled select()
also follows these rules, which in particular allows
recursive CTEs to render correctly in this scenario, which
were previously failing to render correctly due to this
issue. References: #6661
* sql
+ [sql] [bug] Fixed issue in CTE constructs mostly relevant to
ORM use cases where a recursive CTE against “anonymous”
labels such as those seen in ORM column_property() mappings
would render in the WITH RECURSIVE xyz(...) section as their
raw internal label and not a cleanly anonymized name.
References: #6663
* mypy
+ [mypy] [bug] Fixed issue in mypy plugin where class info for
a custom declarative base would not be handled correctly on a
cached mypy pass, leading to an AssertionError being raised.
References: #6476
* asyncio
+ [asyncio] [usecase] Implemented async_scoped_session to
address some asyncio-related incompatibilities between
scoped_session and AsyncSession, in which some methods
(notably the async_scoped_session.remove() method) should
be used with the await keyword. References: #6583
+ [asyncio] [bug] [postgresql] Fixed bug in asyncio
implementation where the greenlet adaptation system failed
to propagate BaseException subclasses, most notably including
asyncio.CancelledError, to the exception handling logic used
by the engine to invalidate and clean up the connection, thus
preventing connections from being correctly disposed when a
task was cancelled. References: #6652
* postgresql
+ [postgresql] [bug] [oracle] Fixed issue where the INTERVAL
datatype on PostgreSQL and Oracle would produce an
AttributeError when used in the context of a comparison
operation against a timedelta() object. Pull request courtesy
MajorDallas. References: #6649
+ [postgresql] [bug] Fixed issue where the pool “pre ping”
feature would implicitly start a transaction, which would
then interfere with custom transactional flags such as
PostgreSQL’s “read only” mode when used with the psycopg2
driver. References: #6621
* mysql
+ [mysql] [usecase] Added new construct match, which provides
for the full range of MySQL’s MATCH operator including
multiple column support and modifiers. Pull request courtesy
Anton Kovalevich. References: #6132
* mssql
+ [mssql] [change] Made improvements to the server version
regexp used by the pymssql dialect to prevent a regexp
overflow in case of an invalid version string.
References: #6253, #6503
+ [mssql] [bug] Fixed bug where the “schema_translate_map”
feature would fail to function correctly in conjunction with
an INSERT into a table that has an IDENTITY column, where the
value of the IDENTITY column were specified in the values of
the INSERT thus triggering SQLAlchemy’s feature of setting
IDENTITY INSERT to “on”; it’s in this directive where the
schema translate map would fail to be honored.
References: #6658
- changes from version 1.4.18:
* orm
+ [orm] [performance] [bug] [regression] Fixed regression
involving how the ORM would resolve a given mapped column to
a result row, where under cases such as joined eager loading,
a slightly more expensive “fallback” could take place to set
up this resolution due to some logic that was removed since
1.3. The issue could also cause deprecation warnings
involving column resolution to be emitted when using a 1.4
style query with joined eager loading. References: #6596
+ [orm] [bug] Clarified the current purpose of the
relationship.bake_queries flag, which in 1.4 is to enable or
disable “lambda caching” of statements within the “lazyload”
and “selectinload” loader strategies; this is separate from
the more foundational SQL query cache that is used for most
statements. Additionally, the lazy loader no longer uses its
own cache for many-to-one SQL queries, which was an
implementation quirk that doesn’t exist for any other loader
scenario. Finally, the “lru cache” warning that the
lazyloader and selectinloader strategies could emit when
handling a wide array of class/relationship combinations has
been removed; based on analysis of some end-user cases, this
warning doesn’t suggest any significant issue. While setting
bake_queries=False for such a relationship will remove this
cache from being used, there’s no particular performance gain
in this case as using no caching vs. using a cache that needs
to refresh often likely still wins out on the caching being
used side. References: #6072, #6487
+ [orm] [bug] [regression] Adjusted the means by which classes
such as scoped_session and AsyncSession are generated from
the base Session class, such that custom Session subclasses
such as that used by Flask-SQLAlchemy don’t need to implement
positional arguments when they call into the superclass
method, and can continue using the same argument styles as in
previous releases. References: #6285
+ [orm] [bug] [regression] Fixed issue where query production
for joinedload against a complex left hand side involving
joined-table inheritance could fail to produce a correct
query, due to a clause adaption issue. References: #6595
+ [orm] [bug] Fixed issue in experimental “select ORM objects
from INSERT/UPDATE” use case where an error was raised if
the statement were against a single-table-inheritance
subclass. References: #6591
+ [orm] [bug] The warning that’s emitted for relationship()
when multiple relationships would overlap with each other as
far as foreign key attributes written towards, now includes
the specific “overlaps” argument to use for each warning in
order to silence the warning without changing the mapping.
References: #6400
* asyncio
+ [asyncio] [usecase] Implemented a new registry architecture
that allows the Async version of an object, like
AsyncSession, AsyncConnection, etc., to be locatable given
the proxied “sync” object, i.e. Session, Connection.
Previously, to the degree such lookup functions were used,
an Async object would be re-created each time, which was
less than ideal as the identity and state of the “async”
object would not be preserved across calls.
From there, new helper functions async_object_session(),
async_session() as well as a new InstanceState attribute
InstanceState.async_session have been added, which are used
to retrieve the original AsyncSession associated with an ORM
mapped object, a Session associated with an AsyncSession,
and an AsyncSession associated with an InstanceState,
respectively. This patch also implements new methods
AsyncSession.in_nested_transaction(),
AsyncSession.get_transaction(),
AsyncSession.get_nested_transaction(). References: #6319
+ [asyncio] [bug] Fixed an issue that presented itself when
using the NullPool or the StaticPool with an async engine.
This mostly affected the aiosqlite dialect.
References: #6575
+ [asyncio] [bug] Added asyncio.exceptions.TimeoutError,
asyncio.exceptions.CancelledError as so-called “exit
exceptions”, a class of exceptions that include things
like GreenletExit and KeyboardInterrupt, which are
considered to be events that warrant considering a DBAPI
connection to be in an unusable state where it should be
recycled. References: #6592
* postgresql
+ [postgresql] [bug] [regression] Fixed regression where using
the PostgreSQL “INSERT..ON CONFLICT” structure would fail to
work with the psycopg2 driver if it were used in an
“executemany” context along with bound parameters in the
“SET” clause, due to the implicit use of the psycopg2 fast
execution helpers which are not appropriate for this style of
INSERT statement; as these helpers are the default in 1.4
this is effectively a regression. Additional checks to
exclude this kind of statement from that particular extension
have been added. References: #6581
* sqlite
+ [sqlite] [bug] Add note regarding encryption-related pragmas
for pysqlcipher passed in the url. This change is also
backported to: 1.3.25. References: #6589
+ [sqlite] [bug] [regression] The fix for pysqlcipher released
in version 1.4.3 #5848 was unfortunately non-working, in that
the new on_connect_url hook was erroneously not receiving a
URL object under normal usage of create_engine() and instead
received a string that was unhandled; the test suite failed
to fully set up the actual conditions under which this hook
is called. This has been fixed. References: #6586
- changes from version 1.4.17:
* orm
+ [orm] [bug] [regression] Fixed regression caused by
just-released performance fix mentioned in #6550 where a
query.join() to a relationship could produce an
AttributeError if the query were made against non-ORM
structures only, a fairly unusual calling pattern.
References: #6558
- changes from version 1.4.16:
* general
+ [general] [bug] Resolved various deprecation warnings which
were appearing as of Python version 3.10.0b1.
References: #6540, #6543
* orm
+ [orm] [bug] Fixed issue when using
relationship.cascade_backrefs parameter set to False, which
per cascade_backrefs behavior deprecated for removal in 2.0
is set to become the standard behavior in SQLAlchemy 2.0,
where adding the item to a collection that uniquifies, such
as set or dict would fail to fire a cascade event if the
object were already associated in that collection via the
backref. This fix represents a fundamental change in the
collection mechanics by introducing a new event state which
can fire off for a collection mutation even if there is no
net change on the collection; the action is now suited using
a new event hook AttributeEvents.append_wo_mutation().
References: #6471
+ [orm] [bug] [regression] Fixed regression involving clause
adaption of labeled ORM compound elements, such as
single-table inheritance discriminator expressions with
conditionals or CASE expressions, which could cause aliased
expressions such as those used in ORM join / joinedload
operations to not be adapted correctly, such as referring
to the wrong table in the ON clause in a join.
This change also improves a performance bump that was located
within the process of invoking Select.join() given an ORM
attribute as a target. References: #6550
+ [orm] [bug] [regression] Fixed regression where the full
combination of joined inheritance, global with_polymorphic,
self-referential relationship and joined loading would fail
to be able to produce a query with the scope of lazy loads
and object refresh operations that also attempted to render
the joined loader. References: #6495
+ [orm] [bug] Enhanced the bind resolution rules for
Session.execute() so that when a non-ORM statement such as
an insert() construct nonetheless is built against ORM
objects, to the greatest degree possible the ORM entity will
be used to resolve the bind, such as for a Session that has
a bind map set up on a common superclass without specific
mappers or tables named in the map. References: #6484
* engine
+ [engine] [bug] Fixed issue where an @ sign in the database
portion of a URL would not be interpreted correctly if the
URL also had a username:password section. References: #6482
+ [engine] [bug] Fixed a long-standing issue with URL where
query parameters following the question mark would not be
parsed correctly if the URL did not contain a database
portion with a backslash. References: #6329
* sql
+ [sql] [bug] [regression] Fixed regression in dynamic loader
strategy and relationship() overall where the
relationship.order_by parameter were stored as a mutable
list, which could then be mutated when combined with
additional “order_by” methods used against the dynamic
query object, causing the ORDER BY criteria to continue
to grow repetitively. References: #6549
* mssql
+ [mssql] [usecase] Implemented support for a CTE construct to
be used directly as the target of a delete() construct, i.e.
“WITH … AS cte DELETE FROM cte”. This appears to be a useful
feature of SQL Server. References: #6464
* misc
+ [bug] [ext] Fixed a deprecation warning that was emitted
when using automap_base() without passing an existing Base.
References: #6529
+ [bug] [pep484] Remove pep484 types from the code. Current
effort is around the stub package, and having typing in two
places makes thing worse, since the types in the SQLAlchemy
source were usually outdated compared to the version in the
stubs. References: #6461
+ [bug] [ext] [regression] Fixed regression in the
sqlalchemy.ext.instrumentation extension that prevented
instrumentation disposal from working completely. This fix
includes both a 1.4 regression fix as well as a fix for a
related issue that existed in 1.3 also. As part of this
change, the
sqlalchemy.ext.instrumentation.InstrumentationManager class
now has a new method unregister(), which replaces the
previous method dispose(), which was not called as of
version 1.4. References: #6390
- Drop patch:
* tests_overcome_bpo42967.patch
* Fri May 14 2021 [email protected]
- updated line numbers in patch
- update to version 1.4.15:
* general
+ [general] [feature] A new approach has been applied to the
warnings system in SQLAlchemy to accurately predict the
appropriate stack level for each warning dynamically. This
allows evaluating the source of SQLAlchemy-generated warnings
and deprecation warnings to be more straightforward as the
warning will indicate the source line within end-user code,
rather than from an arbitrary level within SQLAlchemy’s own
source code.
* orm
+ [orm] [bug] [regression] Fixed additional regression caused by
“eager loaders run on unexpire” feature #1763 where the feature
would run for a contains_eager() eagerload option in the case
that the contains_eager() were chained to an additional eager
loader option, which would then produce an incorrect query as
the original query-bound join criteria were no longer present.
+ [orm] [bug] Fixed issue in subquery loader strategy which
prevented caching from working correctly. This would have been
seen in the logs as a “generated” message instead of “cached”
for all subqueryload SQL emitted, which by saturating the cache
with new keys would degrade overall performance; it also would
produce “LRU size alert” warnings.
* sql
+ [sql] [bug] Adjusted the logic added as part of #6397 in 1.4.12
so that internal mutation of the BindParameter object occurs
within the clause construction phase as it did before, rather
than in the compilation phase. In the latter case, the mutation
still produced side effects against the incoming construct and
additionally could potentially interfere with other internal
mutation routines.
* mysql
+ [mysql] [bug] [documentation] Added support for the
ssl_check_hostname= parameter in mysql connection URIs and
updated the mysql dialect documentation regarding secure
connections. Original pull request courtesy of Jerry Zhao.
- changes from version 1.4.14:
* orm
+ [orm] [bug] [regression] Fixed regression involving
lazy='dynamic' loader in conjunction with a detached object. The
previous behavior was that the dynamic loader upon calling
methods like .all() returns empty lists for detached objects
without error, this has been restored; however a warning is now
emitted as this is not the correct result. Other dynamic loader
scenarios correctly raise DetachedInstanceError.
* engine
+ [engine] [usecase] [orm] Applied consistent behavior to the use
case of calling .commit() or .rollback() inside of an existing
.begin() context manager, with the addition of potentially
emitting SQL within the block subsequent to the commit or
rollback. This change continues upon the change first added in
[#6155] where the use case of calling “rollback” inside of a
.begin() contextmanager block was proposed:
o calling .commit() or .rollback() will now be allowed without
error or warning within all scopes, including that of legacy
and future Engine, ORM Session, asyncio
AsyncEngine. Previously, the Session disallowed this.
o The remaining scope of the context manager is then closed;
when the block ends, a check is emitted to see if the
transaction was already ended, and if so the block returns
without action.
o It will now raise an error if subsequent SQL of any kind is
emitted within the block, after .commit() or .rollback() is
called. The block should be closed as the state of the
executable object would otherwise be undefined in this
state.
+ [engine] [bug] [regression] Established a deprecation path for
calling upon the CursorResult.keys() method for a statement that
returns no rows to provide support for legacy patterns used by
the “records” package as well as any other non-migrated
applications. Previously, this would raise
ResourceClosedException unconditionally in the same way as it
does when attempting to fetch rows. While this is the correct
behavior going forward, the _cursor.LegacyCursorResult object
will now in this case return an empty list for .keys() as it did
in 1.3, while also emitting a 2.0 deprecation warning. The
_cursor.CursorResult, used when using a 2.0-style “future”
engine, will continue to raise as it does now.
* sql
+ [sql] [bug] [regression] Fixed regression caused by the “empty
in” change just made in #6397 1.4.12 where the expression needs
to be parenthesized for the “not in” use case, otherwise the
condition will interfere with the other filtering criteria.
+ [sql] [bug] [regression] The TypeDecorator class will now emit a
warning when used in SQL compilation with caching unless the
.cache_ok flag is set to True or False. A new class-level
attribute TypeDecorator.cache_ok may be set which will be used
as an indication that all the parameters passed to the object
are safe to be used as a cache key if set to True, False means
they are not.
* Thu May 06 2021 [email protected]
- Remove %ifpython2 (python2 flavor is disabled).
- Do not use %if %{python_version_nodots} for BuildRequires.
* Wed May 05 2021 [email protected]
- Remove broken %ifpython3 since the python2 flavor is disabled
anyway.
* Tue May 04 2021 [email protected]
- update to 1.4.13:
orm
* Fixed regression in selectinload loader strategy that would
cause it to cache its internal state incorrectly when handling
relationships that join across more than one column, such as
when using a composite foreign key. The invalid caching would
then cause other unrelated loader operations to fail.
References: #6410
* Fixed regression where Query.filter_by() would not work if the
lead entity were a SQL function or other expression derived
from the primary entity in question, rather than a simple
entity or column of that entity. Additionally, improved the
behavior of Select.filter_by() overall to work with column
expressions even in a non-ORM context. References: #6414
* Fixed regression where using selectinload() and subqueryload()
to load a two-level-deep path would lead to an attribute error.
References: #6419
* Fixed regression where using the noload() loader strategy in
conjunction with a “dynamic” relationship would lead to an
attribute error as the noload strategy would attempt to apply
itself to the dynamic loader. References: #6420
engine
* Restored a legacy transactional behavior that was inadvertently
removed from the Connection as it was never tested as a known
use case in previous versions, where calling upon the
Connection.begin_nested() method, when no transaction is
present, does not create a SAVEPOINT at all and instead starts
an outer transaction, returning a RootTransaction object
instead of a NestedTransaction object. This RootTransaction
then will emit a real COMMIT on the database connection when
committed. Previously, the 2.0 style behavior was present in
all cases that would autobegin a transaction but not commit
it, which is a behavioral change. When using a 2.0 style
connection object, the behavior is unchanged from previous
1.4 versions; calling Connection.begin_nested() will
“autobegin” the outer transaction if not already present,
and then as instructed emit a SAVEPOINT, returning the
NestedTransaction object. The outer transaction is committed
by calling upon Connection.commit(), as is “commit-as-you-go”
style usage.
In non-“future” mode, while the old behavior is restored,
it also emits a 2.0 deprecation warning as this is a legacy
behavior. References: #6408
asyncio
* Fixed a regression introduced by #6337 that would create an
asyncio.Lock which could be attached to the wrong loop when
instantiating the async engine before any asyncio loop was
started, leading to an asyncio error message when attempting
to use the engine under certain circumstances.
References: #6409
postgresql
* Add support for server side cursors in the pg8000 dialect
for PostgreSQL. This allows use of the
Connection.execution_options.stream_results option.
References: #6198
* Tue May 04 2021 [email protected]
- Removed use of pytest-xdist which is giving intermitent
failed builds with internal errors like:
INTERNALERROR> E RuntimeError: There is no current
event loop in thread 'Dummy-1'.
[...]
INTERNALERROR> /usr/lib/python3.9/site-packages/xdist/
dsession.py:190: AssertionError
[gw6] node down: Not properly terminated
* Fri Apr 30 2021 [email protected]
- Update to 1.4.12:
* There are many changes between the 1.4 and 1.3 branch so please
check the full list at:
https://docs.sqlalchemy.org/en/14/changelog/changelog_14.html
- Update to the 1.4 branch:
Version 1.4 is taking on a different focus than other SQLAlchemy
releases in that it is in many ways attempting to serve as a
potential migration point for a more dramatic series of API
changes currently planned for release 2.0 of SQLAlchemy.
* Python 3.6 is the minimum Python 3 version; Python 2.7 still
supported
* ORM Query is internally unified with select, update, delete;
2.0 style execution available.
* Transparent SQL Compilation Caching added to All DQL,
DML Statements in Core, ORM.
* Declarative is now integrated into the ORM with new features
* Python Dataclasses, attrs Supported w/ Declarative,
Imperative Mappings.
* Asynchronous IO Support for Core and ORM
* Many Core and ORM statement objects now perform much of their
construction and validation in the compile phase
* Repaired internal importing conventions such that code linters
may work correctly
* Support for SQL Regular Expression operators
* SQLAlchemy 2.0 Deprecations Mode
* API and Behavioral Changes - Core
- A SELECT statement is no longer implicitly considered to be
a FROM clause
- select().join() and outerjoin() add JOIN criteria to the
current query, rather than creating a subquery
- The URL object is now immutable
- Changes to CreateEnginePlugin
- select(), case() now accept positional expressions
- All IN expressions render parameters for each value in the
list on the fly (e.g. expanding parameters)
- Built-in FROM linting will warn for any potential cartesian
products in a SELECT statement
- New Result object
- RowProxy is no longer a “proxy”; is now called Row and
behaves like an enhanced named tuple
- Rationale: To behave more like a named tuple rather than
a mapping
- Proxying behavior goes away, was also unnecessary in
modern usage
- SELECT objects and derived FROM clauses allow for duplicate
columns and column labels
- Improved column labeling for simple column expressions using
CAST or similar
- New "post compile" bound parameters used for LIMIT/OFFSET
in Oracle, SQL Server
- Connection-level transactions can now be inactive based on
subtransaction
- Enum and Boolean datatypes no longer default to "create
constraint"
* New Features - ORM
- Raiseload for Columns
- ORM Batch inserts with psycopg2 now batch statements with
RETURNING in most cases
- ORM Bulk Update and Delete use RETURNING for "fetch"
strategy when available
* Behavioral Changes - ORM
- The "KeyedTuple" object returned by Query is replaced by Row
- Session features new “autobegin” behavior
- Viewonly relationships don’t synchronize backrefs
- cascade_backrefs behavior deprecated for removal in 2.0
- Eager loaders emit during unexpire operations
- Accessing an uninitialized collection attribute on a
transient object no longer mutates __dict__
- The "New instance conflicts with existing identity" error
is now a warning
- Persistence-related cascade operations disallowed with
viewonly=True
- Stricter behavior when querying inheritance mappings using
custom queries
* Dialect Changes
- psycopg2 version 2.7 or higher is required for the
PostgreSQL psycopg2 dialect
- psycopg2 dialect no longer has limitations regarding bound
parameter names
- psycopg2 dialect features "execute_values" with RETURNING
for INSERT statements by default
- Removed “join rewriting” logic from SQLite dialect;
updated imports
- Added Sequence support for MariaDB 10.3
- Added Sequence support distinct from IDENTITY to SQL Server
* For an explanation of each of those changes, check
- https://docs.sqlalchemy.org/en/14/changelog/migration_14.html
- For the full list of changes in each revision in the 1.4 branch
please read:
* https://docs.sqlalchemy.org/en/14/changelog/changelog_14.html
- Do not build the python2 flavor. Python 2.7 is supposed to be
supported but currently fails to build.
- Rebase patch:
* tests_overcome_bpo42967.patch
* Tue Feb 23 2021 [email protected]
- Add tests_overcome_bpo42967.patch to over effects of bpo#42967,
which forbade mixing amps and semicolons in query strings as
separators (gh#sqlalchemy/sqlalchemy#5969).
* Tue Feb 23 2021 [email protected]
- update to 1.3.23:
* Release 1.3.23 contains an array of bugfixes specific to dialects such as
Oracle, PostgreSQL, and MySQL.
* Wed Jan 20 2021 [email protected]
- Skip one failing test on Python 3.6
* Sat Dec 19 2020 [email protected]
- update to 1.3.22:
* Fixed regression which occured due to #5755 which implemented isolation
level support for Oracle
* bugfixes for various engines, see
https://docs.sqlalchemy.org/en/14/changelog/changelog_13.html#change-1.3.21
* Mon Oct 19 2020 [email protected]
- added gpg pub key for source validation
- Update to version 1.3.20
pytest_depr_from_parent.patch is obsolete again
orm
* An ArgumentError with more detail is now raised if the target
parameter for Query.join() is set to an unmapped object. Prior
to this change a less detailed AttributeError was raised. Pull
request courtesy Ramon Williams. References: #4428
* Fixed issue where using a loader option against a string attribute
name that is not actually a mapped attribute, such as a plain
Python descriptor, would raise an uninformative AttributeError;
a descriptive error is now raised. References: #4589
engine
* Fixed issue where a non-string object sent to SQLAlchemyError or a
subclass, as occurs with some third party dialects, would fail to
stringify correctly. Pull request courtesy Andrzej Bartosiński.
References: #5599
* Repaired a function-level import that was not using SQLAlchemy’s
standard late-import system within the sqlalchemy.exc module.
References: #5632
sql
* Fixed issue where the pickle.dumps() operation against Over construct
would produce a recursion overflow. References: #5644
* Fixed bug where an error was not raised in the case where a column()
were added to more than one table() at a time. This raised correctly
for the Column and Table objects. An ArgumentError is now raised when
this occurs. References: #5618
postgresql
* The psycopg2 dialect now support PostgreSQL multiple host connections,
by passing host/port combinations to the query string.
References: #4392
* Adjusted the Comparator.any() and Comparator.all() methods to implement
a straight “NOT” operation for negation, rather than negating the
comparison operator. References: #5518
* Fixed issue where the ENUM type would not consult the schema translate
map when emitting a CREATE TYPE or DROP TYPE during the test to see if
the type exists or not. Additionally, repaired an issue where if the
same enum were encountered multiple times in a single DDL sequence,
the “check” query would run repeatedly rather than relying upon a cached value.
References: #5520
mysql
* Adjusted the MySQL dialect to correctly parenthesize functional index
expressions as accepted by MySQL 8. Pull request courtesy Ramon Williams.
References: #5462
* The “skip_locked” keyword used with with_for_update() will emit a warning
when used on MariaDB backends, and will then be ignored. This is a
deprecated behavior that will raise in SQLAlchemy 1.4, as an application
that requests “skip locked” is looking for a non-blocking operation which
is not available on those backends.
References: #5568
* Fixed bug where an UPDATE statement against a JOIN using MySQL multi-table
format would fail to include the table prefix for the target table if the
statement had no WHERE clause, as only the WHERE clause were scanned to
detect a “multi table update” at that particular point. The target is now
also scanned if it’s a JOIN to get the leftmost table as the primary table
and the additional entries as additional FROM entries.
References: #5617
* Add new MySQL reserved words: cube, lateral added in MySQL 8.0.1 and 8.0.14,
respectively; this indicates that these terms will be quoted if used as table
or column identifier names.
References: #5539
* Fri Oct 09 2020 [email protected]
- Replace pytest_depr_from_parent.patch with the upstream commit resolving
same issue (gh#sqlalchemy/sqlalchemy#commit40cdb9c0bf4d).
* Thu Oct 08 2020 [email protected]
- Add pytest_depr_from_parent.patch to fix FTBGS with pytest 6.*
(gh#sqlalchemy/sqlalchemy#5635)
* Thu Aug 20 2020 [email protected]
- update to 1.3.19
* Adjusted the workings of the Mapper.all_orm_descriptors()
* The name of the virtual column used when using the AbstractConcreteBase
and ConcreteBase classes can now be customized
* Repaired an issue where the “ORDER BY” clause rendering a label name rather
than a complete expression
* The LookupError message will now provide the user with up to four possible
values that a column is constrained to via the Enum
* Fixed issue where the Connection.execution_options.schema_translate_map
feature would not take effect when the Sequence.next_value() function
for a Sequence were used in the Column.server_default parameter
and the create table DDL were emitted.
* Added a **kw argument to the DeclarativeMeta.__init__() method
* Sun Jun 28 2020 [email protected]
- update to version 1.3.18:
* orm
+ Improve error message when using Query.filter_by() in a query
where the first entity is not a mapped class. References: #5326
+ Added a new parameter query_expression.default_expr to the
query_expression() construct, which will be appled to queries
automatically if the with_expression() option is not used. Pull
request courtesy Haoyu Sun. References: #5198
* engine
+ Further refinements to the fixes to the “reset” agent fixed in
[#5326], which now emits a warning when it is not being correctly
invoked and corrects for the behavior. Additional scenarios have
been identified and fixed where this warning was being emitted.
References: #5326
+ Fixed issue in URL object where stringifying the object would
not URL encode special characters, preventing the URL from being
re-consumable as a real URL. Pull request courtesy Miguel
Grinberg. References: #5341
* sql
+ Added a “.schema” parameter to the table() construct, allowing
ad-hoc table expressions to also include a schema name. Pull
request courtesy Dylan Modesitt. References: #5309
+ Correctly apply self_group in type_coerce element. The type
coerce element did not correctly apply grouping rules when using
in an expression References: #5344
+ Added Select.with_hint() output to the generic SQL string that
is produced when calling str() on a statement. Previously, this
clause would be omitted under the assumption that it was dialect
specific. The hint text is presented within brackets to indicate
the rendering of such hints varies among backends. References:
[#5353]
+ Introduce IdentityOptions to store common parameters for
sequences and identity columns. References: #5324
+ Added .offset support to sybase dialect. Pull request courtesy
Alan D. Snow. References: #5294
* schema
+ Fixed issue where dialect_options were omitted when a database
object (e.g., Table) was copied using tometadata(). References:
[#5276]
* mysql
+ Implemented row-level locking support for mysql. Pull request
courtesy Quentin Somerville. References: #4860
* sqlite
+ SQLite 3.31 added support for computed column. This change
enables their support in SQLAlchemy when targeting SQLite.
References: #5297
+ Added “exists” to the list of reserved words for SQLite so that
this word will be quoted when used as a label or column
name. Pull request courtesy Thodoris Sotiropoulos. References:
[#5395]
* mssql
+ Refined the logic used by the SQL Server dialect to interpret
multi-part schema names that contain many dots, to not actually
lose any dots if the name does not have bracking or quoting
used, and additionally to support a “dbname” token that has many
parts including that it may have multiple,
independently-bracketed sections. References: #5364, #5366
+ Fixed an issue in the pyodbc connector such that a warning about
pyodbc “drivername” would be emitted when using a totally empty
URL. Empty URLs are normal when producing a non-connected
dialect object or when using the “creator” argument to
create_engine(). The warning now only emits if the driver name
is missing but other parameters are still present. References:
[#5346]
+ Fixed issue with assembling the ODBC connection string for the
pyodbc DBAPI. Tokens containing semicolons and/or braces “{}”
were not being correctly escaped, causing the ODBC driver to
misinterpret the connection string attributes. References:
[#5373]
+ Fixed issue where datetime.time parameters were being converted
to datetime.datetime, making them incompatible with comparisons
like >= against an actual TIME column. References: #5339
+ Fixed an issue where the is_disconnect function in the SQL
Server pyodbc dialect was incorrectly reporting the disconnect
state when the exception messsage had a substring that matched a
SQL Server ODBC error code. References: #5359
+ Moved the supports_sane_rowcount_returning = False requirement
from the PyODBCConnector level to the MSDialect_pyodbc since
pyodbc does work properly in some circumstances. References:
[#5321]
* oracle
+ Fixed bug in Oracle dialect where indexes that contain the full
set of primary key columns would be mistaken as the primary key
index itself, which is omitted, even if there were
multiples. The check has been refined to compare the name of the
primary key constraint against the index name itself, rather
than trying to guess based on the columns present in the index.
References: #5421
* misc
+ Added new option --raw to the examples.performance suite which
will dump the raw profile test for consumption by any number of
profiling visualizer tools. Removed the “runsnake” option as
runsnake is very hard to build at this point;
* Sat May 23 2020 [email protected]
- update to version 1.3.17:
* orm
+ Added an accessor Comparator.expressions which provides access
to the group of columns mapped under a multi-column
ColumnProperty attribute. References: #5262
+ Introduce relationship.sync_backref flag in a relationship to
control if the synchronization events that mutate the in-Python
attributes are added. This supersedes the previous change #5149,
which warned that viewonly=True relationship target of a
back_populates or backref configuration would be disallowed.
References: #5237
+ Fixed bug where using with_polymorphic() as the target of a join
via RelationshipComparator.of_type() on a mapper that already
has a subquery-based with_polymorphic setting that’s equivalent
to the one requested would not correctly alias the ON clause in
the join. References: #5288
+ Fixed issue in the area of where loader options such as
selectinload() interact with the baked query system, such that
the caching of a query is not supposed to occur if the loader
options themselves have elements such as with_polymorphic()
objects in them that currently are not cache-compatible. The
baked loader could sometimes not fully invalidate itself in
these some of these scenarios leading to missed eager loads.
References: #5303
+ Modified the internal “identity set” implementation, which is a
set that hashes objects on their id() rather than their hash
values, to not actually call the __hash__() method of the
objects, which are typically user-mapped objects. Some methods
were calling this method as a side effect of the implementation.
References: #5304
+ An informative error message is raised when an ORM many-to-one
comparison is attempted against an object that is not an actual
mapped instance. Comparisons such as those to scalar subqueries
aren’t supported; generalized comparison with subqueries is
better achieved using Comparator.has(). References: #5269
* engine
+ Fixed fairly critical issue where the DBAPI connection could be
returned to the connection pool while still in an un-rolled-back
state. The reset agent responsible for rolling back the
connection could be corrupted in the case that the transaction
was “closed” without being rolled back or committed, which can
occur in some scenarios when using ORM sessions and emitting
.close() in a certain pattern involving savepoints. The fix
ensures that the reset agent is always active. References:
[#5326]
* schema
+ Fixed issue where an Index that is deferred in being associated
with a table, such as as when it contains a Column that is not
associated with any Table yet, would fail to attach correctly if
it also contained a non table-oriented expession. References:
[#5298]
+ A warning is emitted when making use of the
MetaData.sorted_tables attribute as well as the sort_tables()
function, and the given tables cannot be correctly sorted due to
a cyclic dependency between foreign key constraints. In this
case, the functions will no longer sort the involved tables by
foreign key, and a warning will be emitted. Other tables that
are not part of the cycle will still be returned in dependency
order. Previously, the sorted_table routines would return a
collection that would unconditionally omit all foreign keys when
a cycle was detected, and no warning was emitted. References:
[#5316]
+ Add comment attribute to Column __repr__ method. References:
[#4138]
* postgresql
+ Added support for columns or type ARRAY of Enum, JSON or JSONB
in PostgreSQL. Previously a workaround was required in these use
cases. References: #5265
+ Raise an explicit CompileError when adding a table with a column
of type ARRAY of Enum configured with Enum.native_enum set to
False when Enum.create_constraint is not set to False
References: #5266
* mssql
+ Fix a regression introduced by the reflection of computed column
in MSSQL when using the legacy TDS version 4.2. The dialect will
try to detect the protocol version of first connect and run in
compatibility mode if it cannot detect it. References: #5255
+ Fix a regression introduced by the reflection of computed column
in MSSQL when using SQL server versions before 2012, which does
not support the concat function. References: #5271
* oracle
+ Some modifications to how the cx_oracle dialect sets up
per-column outputtype handlers for LOB and numeric datatypes to
adjust for potential changes coming in cx_Oracle 8. References:
[#5246]
+ Changed the implementation of fetching CLOB and BLOB objects to
use cx_Oracle’s native implementation which fetches CLOB/BLOB
objects inline with other result columns, rather than performing
a separate fetch. As always, this can be disabled by setting
auto_convert_lobs to False.
+ As part of this change, the behavior of a CLOB that was given a
blank string on INSERT now returns None on SELECT, which is now
consistent with that of VARCHAR on Oracle. References: #5314
* firebird
+ Adjusted dialect loading for firebird:// URIs so the external
sqlalchemy-firebird dialect will be used if it has been
installed, otherwise fall back to the (now deprecated) internal
Firebird dialect. References: #5278
* Thu Apr 09 2020 [email protected]
- update to version 1.3.16:
* orm
+ Fixed bug in orm.selectinload() loading option where two or more
loaders that represent different relationships with the same
string key name as referenced from a single
orm.with_polymorphic() construct with multiple subclass mappers
would fail to invoke each subqueryload separately, instead
making use of a single string-based slot that would prevent the
other loaders from being invoked. References: #5228
+ Fixed issue where a lazyload that uses session-local “get”
against a target many-to-one relationship where an object with
the correct primary key is present, however it’s an instance of
a sibling class, does not correctly return None as is the case
when the lazy loader actually emits a load for that row.
References: #5210
+ Modified the queries used by subqueryload and selectinload to no
longer ORDER BY the primary key of the parent entity; this
ordering was there to allow the rows as they come in to be
copied into lists directly with a minimal level of Python-side
collation. However, these ORDER BY clauses can negatively impact
the performance of the query as in many scenarios these columns
are derived from a subquery or are otherwise not actual primary
key columns such that SQL planners cannot make use of
indexes. The Python-side collation uses the native
itertools.group_by() to collate the incoming rows, and has been
modified to allow multiple row-groups-per-parent to be assembled
together using list.extend(), which should still allow for
relatively fast Python-side performance. There will still be an
ORDER BY present for a relationship that includes an explicit
order_by parameter, however this is the only ORDER BY that will
be added to the query for both kinds of loading. References:
[#5162]
* orm declarative
+ The string argument accepted as the first positional argument by
the relationship() function when using the Declarative API is no
longer interpreted using the Python eval() function; instead,
the name is dot separated and the names are looked up directly
in the name resolution dictionary without treating the value as
a Python expression. However, passing a string argument to the
other relationship() parameters that necessarily must accept
Python expressions will still use eval(); the documentation has
been clarified to ensure that there is no ambiguity that this is
in use. See also Evaluation of relationship arguments - details
on string evaluation References: #5238
* sql
+ Add ability to literal compile a DateTime, Date or :class:”Time”
when using the string dialect for debugging purposes. This
change does not impact real dialect implementation that retain
their current behavior. References: #5052
* schema
+ Added support for reflection of “computed” columns, which are
now returned as part of the structure returned by
Inspector.get_columns(). When reflecting full Table objects,
computed columns will be represented using the Computed
construct. References: #5063
* postgresql
+ Fixed issue where a “covering” index, e.g. those which have an
INCLUDE clause, would be reflected including all the columns in
INCLUDE clause as regular columns. A warning is now emitted if
these additional columns are detected indicating that they are
currently ignored. Note that full support for “covering” indexes
is part of #4458. Pull request courtesy Marat Sharafutdinov.
References: #5205
* mysql
+ Fixed issue in MySQL dialect when connecting to a psuedo-MySQL
database such as that provided by ProxySQL, the up front check
for isolation level when it returns no row will not prevent the
dialect from continuing to connect. A warning is emitted that
the isolation level could not be detected. References: #5239
* sqlite
+ Implemented AUTOCOMMIT isolation level for SQLite when using
pysqlite. References: #5164
* mssql
+ Added support for ColumnOperators.is_distinct_from() and
ColumnOperators.isnot_distinct_from() to SQL Server, MySQL, and
Oracle. References: #5137
* oracle
+ Implemented AUTOCOMMIT isolation level for Oracle when using
cx_Oracle. Also added a fixed default isolation level of READ
COMMITTED for Oracle. References: #5200
+ Fixed regression / incorrect fix caused by fix for #5146 where
the Oracle dialect reads from the “all_tab_comments” view to get
table comments but fails to accommodate for the current owner of
the table being requested, causing it to read the wrong comment
if multiple tables of the same name exist in multiple schemas.
References: #5146
* misc
+ Fixed an issue that prevented the test suite from running with
the recently released py.test 5.4.0. References: #5201
+ Enum type now supports the parameter Enum.length to specify the
length of the VARCHAR column to create when using non native
enums by setting Enum.native_enum to False References: #5183
+ Ensured that the “pyproject.toml” file is not included in
builds, as the presence of this file indicates to pip that a
pep-517 installation process should be used. As this mode of
operation appears to be not well supported by current tools /
distros, these problems are avoided within the scope of
SQLAlchemy installation by omitting the file. References: #5207
* Sat Mar 14 2020 [email protected]
- update to 1.3.15:
* Adjusted the error message emitted by :meth:`.Query.join` when a left hand
side can't be located that the :meth:`.Query.select_from` method is the
best way to resolve the issue. Also, within the 1.3 series, used a
deterministic ordering when determining the FROM clause from a given column
entity passed to :class:`.Query` so that the same expression is determined
each time.
* Fixed regression in 1.3.14 due to :ticket:`4849` where a sys.exc_info()
call failed to be invoked correctly when a flush error would occur. Test
coverage has been added for this exception case.
* Fixed bug where a CTE of an INSERT/UPDATE/DELETE that also uses RETURNING
could then not be SELECTed from directly, as the internal state of the
compiler would try to treat the outer SELECT as a DELETE statement itself
and access nonexistent state.
* Fixed regression caused in 1.3.13 by :ticket:`5056` where a refactor of the
ORM path registry system made it such that a path could no longer be
compared to an empty tuple, which can occur in a particular kind of joined
eager loading path. The "empty tuple" use case has been resolved so that
the path registry is compared to a path registry in all cases;
- Fix build for older distributions by buildrequiring a new-enough pytest
* Thu Mar 12 2020 [email protected]
- Fix build without python2
* Sun Jan 26 2020 [email protected]
- specfile:
* update copyright year
- update to version 1.3.13:
* orm
+ Added test support and repaired a wide variety of unnecessary
reference cycles created for short-lived objects, mostly in the
area of ORM queries. Thanks much to Carson Ip for the help on
this. References: #5050, #5056, #5071
+ Fixed regression in loader options introduced in 1.3.0b3 via
[#4468] where the ability to create a loader option using
PropComparator.of_type() targeting an aliased entity that is an
inheriting subclass of the entity which the preceding
relationship refers to would fail to produce a matching
path. See also #5082 fixed in this same release which involves a
similar kind of issue. References: #5107
+ Fixed regression in joined eager loading introduced in 1.3.0b3
via #4468 where the ability to create a joined option across a
with_polymorphic() into a polymorphic subclass using
RelationshipProperty.of_type() and then further along regular
mapped relationships would fail as the polymorphic subclass
would not add itself to the load path in a way that could be
located by the loader strategy. A tweak has been made to resolve
this scenario. References: #5082
+ Repaired a warning in the ORM flush process that was not covered
by test coverage when deleting objects that use the “version_id”
feature. This warning is generally unreachable unless using a
dialect that sets the “supports_sane_rowcount” flag to False,
which is not typically the case however is possible for some
MySQL configurations as well as older Firebird drivers, and
likely some third party dialects. References: #5068
+ Fixed bug where usage of joined eager loading would not properly
wrap the query inside of a subquery when Query.group_by() were
used against the query. When any kind of result-limiting
approach is used, such as DISTINCT, LIMIT, OFFSET, joined eager
loading embeds the row-limited query inside of a subquery so
that the collection results are not impacted. For some reason,
the presence of GROUP BY was never included in this criterion,
even though it has a similar effect as using
DISTINCT. Additionally, the bug would prevent using GROUP BY at
all for a joined eager load query for most database platforms
which forbid non-aggregated, non-grouped columns from being in
the query, as the additional columns for the joined eager load
would not be accepted by the database. References: #5065
+ Identified a performance issue in the system by which a join is
constructed based on a mapped relationship. The clause adaption
system would be used for the majority of join expressions
including in the common case where no adaptation is needed. The
conditions under which this adaptation occur have been refined
so that average non-aliased joins along a simple relationship
without a “secondary” table use about 70% less function calls.
* engine
+ Fixed issue where the collection of value processors on a
Compiled object would be mutated when “expanding IN” parameters
were used with a datatype that has bind value processors; in
particular, this would mean that when using statement caching
and/or baked queries, the same compiled._bind_processors
collection would be mutated concurrently. Since these processors
are the same function for a given bind parameter namespace every
time, there was no actual negative effect of this issue,
however, the execution of a Compiled object should never be
causing any changes in its state, especially given that they are
intended to be thread-safe and reusable once fully constructed.
References: #5048
* sql
+ A function created using GenericFunction can now specify that
the name of the function should be rendered with or without
quotes by assigning the quoted_name construct to the .name
element of the object. Prior to 1.3.4, quoting was never applied
to function names, and some quoting was introduced in #4467 but
no means to force quoting for a mixed case name was
available. Additionally, the quoted_name construct when used as
the name will properly register its lowercase name in the
function registry so that the name continues to be available via
the func. registry. See also GenericFunction References: #5079
* postgresql
+ Added support for prefixes to the CTE construct, to allow
support for Postgresql 12 “MATERIALIZED” and “NOT MATERIALIZED”
phrases. Pull request courtesy Marat Sharafutdinov. See also:
HasCTE.cte() References: #5040
+ Fixed issue where the PostgreSQL dialect would fail to parse a
reflected CHECK constraint that was a boolean-valued function
(as opposed to a boolean-valued expression). References: #5039
+ Improved detection of two phase transactions requirement for the
PostgreSQL database by testing that max_prepared_transactions is
set to a value greater than 0. Pull request courtesy Federico
Caselli. References: #5057
* mssql
+ Fixed issue where a timezone-aware datetime value being
converted to string for use as a parameter value of a
mssql.DATETIMEOFFSET column was omitting the fractional seconds.
References: #5045
* misc
+ Fixed bug in sqlalchemy.ext.serializer where a unique
BindParameter object could conflict with itself if it were
present in the mapping itself, as well as the filter condition
of the query, as one side would be used against the
non-deserialized version and the other side would use the
deserialized version. Logic is added to BindParameter similar to
its “clone” method which will uniquify the parameter name upon
deserialize so that it doesn’t conflict with its original.
References: #5086
+ Fixed a few test failures which would occur on Windows due to
SQLite file locking issues, as well as some timing issues in
connection pool related tests; pull request courtesy Federico
Caselli. References: #4946
* Fri Dec 20 2019 [email protected]
- update to version 1.3.12:
* [orm] [bug] Fixed issue involving lazy="raise" strategy where an ORM delete
of an object would raise for a simple “use-get” style many-to-one relationship
that had lazy=”raise” configured. This is inconsistent vs. the change
introduced in 1.3 as part of #4353, where it was established that a history
operation that does not expect emit SQL should bypass the lazy="raise" check,
and instead effectively treat it as lazy="raise_on_sql" for this case. The fix
adjusts the lazy loader strategy to not raise for the case where the lazy load
was instructed that it should not emit SQL if the object were not present.
* [orm] [bug] Fixed regression introduced in 1.3.0 related to the association
proxy refactor in #4351 that prevented composite() attributes from working in
terms of an association proxy that references them.
* [orm] [bug] Setting persistence-related flags on relationship() while also
setting viewonly=True will now emit a regular warning, as these flags do not
make sense for a viewonly=True relationship. In particular, the “cascade”
settings have their own warning that is generated based on the individual
values, such as “delete, delete-orphan”, that should not apply to a viewonly
relationship. Note however that in the case of “cascade”, these settings are
still erroneously taking effect even though the relationship is set up as
“viewonly”. In 1.4, all persistence-related cascade settings will be disallowed
on a viewonly=True relationship in order to resolve this issue.
* [orm] [bug] [py3k] Fixed issue where when assigning a collection to itself
as a slice, the mutation operation would fail as it would first erase the
assigned collection inadvertently. As an assignment that does not change the
contents should not generate events, the operation is now a no-op. Note that
the fix only applies to Python 3; in Python 2, the __setitem__ hook isn’t
called in this case; __setslice__ is used instead which recreates the list
item-by-item in all cases.
* [orm] [bug] Fixed issue where by if the “begin” of a transaction failed at
the Core engine/connection level, such as due to network error or database is
locked for some transactional recipes, within the context of the Session
procuring that connection from the conneciton pool and then immediately
returning it, the ORM Session would not close the connection despite this
connection not being stored within the state of that Session. This would lead
to the connection being cleaned out by the connection pool weakref handler
within garbage collection which is an unpreferred codepath that in some special
configurations can emit errors in standard error.
* sql [sql] [bug] Fixed bug where “distinct” keyword passed to select() would
not treat a string value as a “label reference” in the same way that the
select.distinct() does; it would instead raise unconditionally. This keyword
argument and the others passed to select() will ultimately be deprecated for
SQLAlchemy 2.0.
* [sql] [bug] Changed the text of the exception for “Can’t resolve label
reference” to include other kinds of label coercions, namely that “DISTINCT” is
also in this category under the PostgreSQL dialect.
* Sat Nov 16 2019 [email protected]
- update to version 1.3.11:
* orm
+ [orm] [bug] The relationship.omit_join flag was not intended to
be manually set to True, and will now emit a warning when this
occurs. The omit_join optimization is detected automatically,
and the omit_join flag was only intended to disable the
optimization in the hypothetical case that the optimization may
have interfered with correct results, which has not been
observed with the modern version of this feature. Setting the
flag to True when it is not automatically detected may cause the
selectin load feature to not work correctly when a non-default
primary join condition is in use. References: #4954
+ [orm] [bug] A warning is emitted if a primary key value is
passed to Query.get() that consists of None for all primary key
column positions. Previously, passing a single None outside of a
tuple would raise a TypeError and passing a composite None
(tuple of None values) would silently pass through. The fix now
coerces the single None into a tuple where it is handled
consistently with the other None conditions. Thanks to Lev
Izraelit for the help with this. References: #4915
+ [orm] [bug] The BakedQuery will not cache a query that was
modified by a QueryEvents.before_compile() event, so that
compilation hooks that may be applying ad-hoc modifications to
queries will take effect on each run. In particular this is
helpful for events that modify queries used in lazy loading as
well as eager loading such as “select in” loading. In order to
re-enable caching for a query modified by this event, a new flag
bake_ok is added; see Using the before_compile event for
details. A longer term plan to provide a new form of SQL
caching should solve this kind of issue more comprehensively.
References: #4947
+ [orm] [bug] Fixed ORM bug where a “secondary” table that
referred to a selectable which in some way would refer to the
local primary table would apply aliasing to both sides of the
join condition when a relationship-related join, either via
Query.join() or by joinedload(), were generated. The “local”
side is now excluded. References: #4974
+ [orm] [usecase] Added accessor Query.is_single_entity() to
Query, which will indicate if the results returned by this Query
will be a list of ORM entities, or a tuple of entities or column
expressions. SQLAlchemy hopes to improve upon the behavior of
single entity / tuples in future releases such that the behavior
would be explicit up front, however this attribute should be
helpful with the current behavior. Pull request courtesy Patrick
Hayes. References: #4934
* engine
+ [engine] [bug] Fixed bug where parameter repr as used in logging
and error reporting needs additional context in order to
distinguish between a list of parameters for a single statement
and a list of parameter lists, as the “list of lists” structure
could also indicate a single parameter list where the first
parameter itself is a list, such as for an array parameter. The
engine/connection now passes in an additional boolean indicating
how the parameters should be considered. The only SQLAlchemy
backend that expects arrays as parameters is that of psycopg2
which uses pyformat parameters, so this issue has not been too
apparent, however as other drivers that use positional gain more
features it is important that this be supported. It also
eliminates the need for the parameter repr function to guess
based on the parameter structure passed. References: #4902
+ [engine] [bug] [postgresql] Fixed bug in Inspector where the
cache key generation did not take into account arguments passed
in the form of tuples, such as the tuple of view name styles to
return for the PostgreSQL dialect. This would lead the inspector
to cache too generally for a more specific set of criteria. The
logic has been adjusted to include every keyword element in the
cache, as every argument is expected to be appropriate for a
cache else the caching decorator should be bypassed by the
dialect. References: #4955
* sql
+ [sql] [bug] [py3k] Changed the repr() of the quoted_name
construct to use regular string repr() under Python 3, rather
than running it through “backslashreplace” escaping, which can
be misleading. References: #4931
+ [sql] [usecase] Added new accessors to expressions of type JSON
to allow for specific datatype access and comparison, covering
strings, integers, numeric, boolean elements. This revises the
documented approach of CASTing to string when comparing values,
instead adding specific functionality into the PostgreSQL,
SQlite, MySQL dialects to reliably deliver these basic types in
all cases. See also: JSON, JSON.Comparator.as_string(),
JSON.Comparator.as_boolean(), JSON.Comparator.as_float(),
JSON.Comparator.as_integer(), References: #4276
+ [sql] [usecase] The text() construct now supports “unique” bound
parameters, which will dynamically uniquify themselves on
compilation thus allowing multiple text() constructs with the
same bound parameter names to be combined together. References:
[#4933]
* schema
+ [schema] [bug] Fixed bug where a table that would have a column
label overlap with a plain column name, such as “foo.id AS
foo_id” vs. “foo.foo_id”, would prematurely generate the ._label
attribute for a column before this overlap could be detected due
to the use of the index=True or unique=True flag on the column
in conjunction with the default naming convention of
"column_0_label". This would then lead to failures when ._label
were used later to generate a bound parameter name, in
particular those used by the ORM when generating the WHERE
clause for an UPDATE statement. The issue has been fixed by
using an alternate ._label accessor for DDL generation that does
not affect the state of the Column. The accessor also bypasses
the key-deduplication step as it is not necessary for DDL, the
naming is now consistently "<tablename>_<columnname>" without
any subsequent numeric symbols when used in DDL. References:
[#4911]
+ [schema] [usecase] Added DDL support for “computed columns”;
these are DDL column specifications for columns that have a
server-computed value, either upon SELECT (known as “virtual”)
or at the point of which they are INSERTed or UPDATEd (known as
“stored”). Support is established for Postgresql, MySQL, Oracle
SQL Server and Firebird. Thanks to Federico Caselli for lots of
work on this one. See also: Computed (GENERATED ALWAYS AS)
Columns References: #4894
* mysql
+ [mysql] [bug] Added “Connection was killed” message interpreted
from the base pymysql.Error class in order to detect closed
connection, based on reports that this message is arriving via a
pymysql.InternalError() object which indicates pymysql is not
handling it correctly. References: #4945
* mssql
+ [mssql] [bug] Fixed issue in MSSQL dialect where an
expression-based OFFSET value in a SELECT would be rejected,
even though the dialect can render this expression inside of a
ROW NUMBER-oriented LIMIT/OFFSET construct. References: #4973
+ [mssql] [bug] Fixed an issue in the Engine.table_names() method
where it would feed the dialect’s default schema name back into
the dialect level table function, which in the case of SQL
Server would interpret it as a dot-tokenized schema name as
viewed by the mssql dialect, which would cause the method to
fail in the case where the database username actually had a dot
inside of it. In 1.3, this method is still used by the
MetaData.reflect() function so is a prominent codepath. In 1.4,
which is the current master development branch, this issue
doesn’t exist, both because MetaData.reflect() isn’t using this
method nor does the method pass the default schema name
explicitly. The fix nonetheless guards against the default
server name value returned by the dialect from being interpreted
as dot-tokenized name under any circumstances by wrapping it in
quoted_name(). References: #4923
* oracle
+ [oracle] [bug] [firebird] Modified the approach of “name
normalization” for the Oracle and Firebird dialects, which
converts from the UPPERCASE-as-case-insensitive convention of
these dialects into lowercase-as-case-insensitive for
SQLAlchemy, to not automatically apply the quoted_name construct
to a name that matches itself under upper or lower case
conversion, as is the case for many non-european characters. All
names used within metadata structures are converted to
quoted_name objects in any case; the change here would only
affect the output of some inspection functions. References:
[#4931]
+ [oracle] [bug] The sqltypes.NCHAR datatype will now bind to the
cx_Oracle.FIXED_NCHAR DBAPI data bindings when used in a bound
parameter, which supplies proper comparison behavior against a
variable-length string. Previously, the sqltypes.NCHAR datatype
would bind to cx_oracle.NCHAR which is not fixed length; the
sqltypes.CHAR datatype already binds to cx_Oracle.FIXED_CHAR so
it is now consistent that sqltypes.NCHAR binds to
cx_Oracle.FIXED_NCHAR. References: #4913
+ [oracle] [usecase] Added dialect-level flag encoding_errors to
the cx_Oracle dialect, which can be specified as part of
create_engine(). This is passed to SQLAlchemy’s unicode decoding
converter under Python 2, and to cx_Oracle’s cursor.var() object
as the encodingErrors parameter under Python 3, for the very
unusual case that broken encodings are present in the target
database which cannot be fetched unless error handling is
relaxed. The value is ultimately one of the Python “encoding
errors” parameters passed to decode(). References: #4799
* firebird
+ [firebird] [bug] Added additional “disconnect” message “Error
writing data to the connection” to Firebird disconnection
detection. Pull request courtesy lukens. References: #4903
* misc
+ [bug] [tests] Fixed test failures which would occur with newer
SQLite as of version 3.30 or greater, due to their addition of
nulls ordering syntax as well as new restrictions on aggregate
functions. Pull request courtesy Nils Philippsen. References:
[#4920]
+ [bug] [installation] [windows] Added a workaround for a
setuptools-related failure that has been observed as occurring
on Windows installations, where setuptools is not correctly
reporting a build error when the MSVC build dependencies are not
installed and therefore not allowing graceful degradation into
non C extensions builds. References: #4967
* Thu Nov 14 2019 [email protected]
- This package needs full fledged python on runtime so make sure
we require it
* Wed Oct 30 2019 [email protected]
- Update to 1.3.10:
* Fixed regression in selectinload loader strategy
* Passing a plain string expression to Session.query() is deprecated
* A warning is emitted for a condition in which the Session may
implicitly swap an object out of the identity map for another one
with the same primary key
* Sat Aug 31 2019 [email protected]
- update to version 1.3.8:
* orm
+ Fixed bug where Load objects were not pickleable due to
mapper/relationship state in the internal context
dictionary. These objects are now converted to picklable using
similar techniques as that of other elements within the loader
option system that have long been serializable. References:
[#4823]
+ Added support for the use of an Enum datatype using Python
pep-435 enumeration objects as values for use as a primary key
column mapped by the ORM. As these values are not inherently
sortable, as required by the ORM for primary keys, a new
TypeEngine.sort_key_function attribute is added to the typing
system which allows any SQL type to implement a sorting for
Python objects of its type which is consulted by the unit of
work. The Enum type then defines this using the database value
of a given enumeration. The sorting scheme can be also be
redefined by passing a callable to the Enum.sort_key_function
parameter. Pull request courtesy Nicolas Caniart. References:
[#4285]
* engine
+ Added new parameter create_engine.hide_parameters which when set
to True will cause SQL parameters to no longer be logged, nor
rendered in the string representation of a StatementError
object. References: #4815
+ Fixed an issue whereby if the dialect “initialize” process which
occurs on first connect would encounter an unexpected exception,
the initialize process would fail to complete and then no longer
attempt on subsequent connection attempts, leaving the dialect
in an un-initialized, or partially initialized state, within the
scope of parameters that need to be established based on
inspection of a live connection. The “invoke once” logic in the
event system has been reworked to accommodate for this
occurrence using new, private API features that establish an
“exec once” hook that will continue to allow the initializer to
fire off on subsequent connections, until it completes without
raising an exception. This does not impact the behavior of the
existing once=True flag within the event system. References:
[#4807]
* postgresql
+ Revised the approach for the just added support for the psycopg2
“execute_values()” feature added in 1.3.7 for #4623. The
approach relied upon a regular expression that would fail to
match for a more complex INSERT statement such as one which had
subqueries involved. The new approach matches exactly the string
that was rendered as the VALUES clause. References: #4623
+ Fixed bug where Postgresql operators such as
postgresql.ARRAY.Comparator.contains() and
postgresql.ARRAY.Comparator.contained_by() would fail to
function correctly for non-integer values when used against a
postgresql.array object, due to an erroneous assert statement.
References: #4822
+ Added support for reflection of CHECK constraints that include
the special PostgreSQL qualifier “NOT VALID”, which can be
present for CHECK constraints that were added to an exsiting
table with the directive that they not be applied to existing
data in the table. The PostgreSQL dictionary for CHECK
constraints as returned by Inspector.get_check_constraints() may
include an additional entry dialect_options which within will
contain an entry "not_valid": True if this symbol is
detected. Pull request courtesy Bill Finn. References: #4824
* sqlite
+ Fixed bug where a FOREIGN KEY that was set up to refer to the
parent table by table name only without the column names would
not correctly be reflected as far as setting up the “referred
columns”, since SQLite’s PRAGMA does not report on these columns
if they weren’t given explicitly. For some reason this was
harcoded to assume the name of the local column, which might
work for some cases but is not correct. The new approach
reflects the primary key of the referred table and uses the
constraint columns list as the referred columns list, if the
remote column(s) aren’t present in the reflected pragma
directly. References: #4810
* Sun Aug 25 2019 [email protected]
- update to version 1.3.7:
* orm
+ Fixed regression caused by new selectinload for many-to-one
logic where a primaryjoin condition not based on real foreign
keys would cause KeyError if a related object did not exist for
a given key value on the parent object. References: #4777
+ Fixed bug where using Query.first() or a slice expression in
conjunction with a query that has an expression based “offset”
applied would raise TypeError, due to an “or” conditional
against “offset” that did not expect it to be a SQL expression
as opposed to an integer or None. References: #4803
* sql
+ Fixed issue where Index object which contained a mixture of
functional expressions which were not resolvable to a particular
column, in combination with string-based column names, would
fail to initialize its internal state correctly leading to
failures during DDL compilation. References: #4778
+ Fixed bug where TypeEngine.column_expression() method would not
be applied to subsequent SELECT statements inside of a UNION or
other CompoundSelect, even though the SELECT statements are
rendered at the topmost level of the statement. New logic now
differentiates between rendering the column expression, which is
needed for all SELECTs in the list, vs. gathering the returned
data type for the result row, which is needed only for the first
SELECT. References: #4787
+ Fixed issue where internal cloning of SELECT constructs could
lead to a key error if the copy of the SELECT changed its state
such that its list of columns changed. This was observed to be
occurring in some ORM scenarios which may be unique to 1.3 and
above, so is partially a regression fix. References: #4780
* postgresql
+ Added new dialect flag for the psycopg2 dialect,
executemany_mode which supersedes the previous experimental
use_batch_mode flag. executemany_mode supports both the “execute
batch” and “execute values” functions provided by psycopg2, the
latter which is used for compiled insert() constructs. Pull
request courtesy Yuval Dinari. See also: Psycopg2 Fast
Execution Helpers; References: #4623
* mysql
+ The MySQL dialects will emit “SET NAMES” at the start of a
connection when charset is given to the MySQL driver, to appease
an apparent behavior observed in MySQL 8.0 that raises a
collation error when a UNION includes string columns unioned
against columns of the form CAST(NULL AS CHAR(..)), which is
what SQLAlchemy’s polymorphic_union function does. The issue
seems to have affected PyMySQL for at least a year, however has
recently appeared as of mysqlclient 1.4.4 based on changes in
how this DBAPI creates a connection. As the presence of this
directive impacts three separate MySQL charset settings which
each have intricate effects based on their presense, SQLAlchemy
will now emit the directive on new connections to ensure correct
behavior. References: #4804
+ Added another fix for an upstream MySQL 8 issue where a case
sensitive table name is reported incorrectly in foreign key
constraint reflection, this is an extension of the fix first
added for #4344 which affects a case sensitive column name. The
new issue occurs through MySQL 8.0.17, so the general logic of
the 88718 fix remains in place. See also:
https://bugs.mysql.com/bug.php?id=96365 - upstream bug;
References: #4751
+ Added reserved words ARRAY and MEMBER to the MySQL reserved
words list, as MySQL 8.0 has now made these reserved.
References: #4783
* sqlite
+ The dialects that support json are supposed to take arguments
json_serializer and json_deserializer at the create_engine()
level, however the SQLite dialect calls them _json_serilizer and
_json_deserilalizer. The names have been corrected, the old
names are accepted with a change warning, and these parameters
are now documented as create_engine.json_serializer and
create_engine.json_deserializer. References: #4798
+ Fixed bug where usage of “PRAGMA table_info” in SQLite dialect
meant that reflection features to detect for table existence,
list of table columns, and list of foreign keys, would default
to any table in any attached database, when no schema name was
given and the table did not exist in the base schema. The fix
explicitly runs PRAGMA for the ‘main’ schema and then the ‘temp’
schema if the ‘main’ returned no rows, to maintain the behavior
of tables + temp tables in the “no schema” namespace, attached
tables only in the “schema” namespace. References: #4793
* mssql
+ Added new mssql.try_cast() construct for SQL Server which emits
“TRY_CAST” syntax. Pull request courtesy Leonel Atencio.
References: #4782
* misc
+ Fixed issue in event system where using the once=True flag with
dynamically generated listener functions would cause event
registration of future events to fail if those listener
functions were garbage collected after they were used, due to an
assumption that a listened function is strongly referenced. The
“once” wrapped is now modified to strongly reference the inner
function persistently, and documentation is updated that using
“once” does not imply automatic de-registration of listener
functions. References: #4794
* Mon Jul 22 2019 [email protected]
- update to version 1.3.6
+ orm
* [feature] Added new loader option method Load.options()
which allows loader options to be constructed hierarchically,
so that many sub-options can be applied to a particular path
without needing to call defaultload() many times.
* [bug] Fixed regression caused by #4365 where a join from an
entity to itself without using aliases no longer raises an
informative error message, instead failing on an assertion.
The informative error condition has been restored.
* [bug] Fixed an issue where the orm._ORMJoin.join() method,
which is a not-internally-used ORM-level method that exposes
what is normally an internal process of Query.join(), did
not propagate the full and outerjoin keyword arguments
correctly.
* [bug] Fixed bug where a many-to-one relationship that
specified uselist=True would fail to update correctly during
a primary key change where a related column needs to change.
* [bug] Fixed bug where the detection for many-to-one or
one-to-one use with a “dynamic” relationship, which is an
invalid configuration, would fail to raise if the
relationship were configured with uselist=True. The current
fix is that it warns, instead of raises, as this would
otherwise be backwards incompatible, however in a future
release it will be a raise.
* [bug] Fixed bug where a synonym created against a mapped
attribute that does not exist yet, as is the case when it
refers to backref before mappers are configured, would raise
recursion errors when trying to test for attributes on it
which ultimately don’t exist (as occurs when the classes are
run through Sphinx autodoc), as the unconfigured state of
the synonym would put it into an attribute not found loop.
* [performance] The optimzation applied to selectin loading
in #4340 where a JOIN is not needed to eagerly load related
items is now applied to many-to-one relationships as well,
so that only the related table is queried for a simple join
condition. In this case, the related items are queried based
on the value of a foreign key column on the parent; if these
columns are deferred or otherwise not loaded on any of the
parent objects in the collection, the loader falls back to the
JOIN method.
+ engine
* [bug] Fixed bug where using reflection function such as
MetaData.reflect() with an Engine object that had execution
options applied to it would fail, as the resulting
OptionEngine proxy object failed to include a .engine
attribute used within the reflection routines.
+ sql
* [bug] Adjusted the initialization for Enum to minimize how
often it invokes the .__members__ attribute of a given
PEP-435 enumeration object, to suit the case where this
attribute is expensive to invoke, as is the case for some
popular third party enumeration libraries.
* [bug] [postgresql] Fixed issue where the array_agg construct
in combination with FunctionElement.filter() would not
produce the correct operator precedence in combination
with the array index operator.
* [bug] Fixed an unlikely issue where the “corresponding
column” routine for unions and other CompoundSelect objects
could return the wrong column in some overlapping column
situtations, thus potentially impacting some ORM operations
when set operations are in use, if the underlying select()
constructs were used previously in other similar kinds of
routines, due to a cached value not being cleared.
+ postgresql
* [usecase] Added support for reflection of indexes on
PostgreSQL partitioned tables, which was added to PostgreSQL
as of version 11.
* [usecase] Added support for multidimensional Postgresql array
literals via nesting the postgresql.array object within
another one. The multidimensional array type is detected
automatically.
+ mysql
* [bug] Fixed bug where the special logic to render “NULL” for
the TIMESTAMP datatype when nullable=True would not work if the
column’s datatype were a TypeDecorator or a Variant. The logic
now ensures that it unwraps down to the original TIMESTAMP so
that this special case NULL keyword is correctly rendered when
requested.
* [bug] Enhanced MySQL/MariaDB version string parsing to
accommodate for exotic MariaDB version strings where the
“MariaDB” word is embedded among other alphanumeric
characters such as “MariaDBV1”. This detection is critical
in order to correctly accommodate for API features that have
split between MySQL and MariaDB such as the
“transaction_isolation” system variable.
+ sqlite
* [usecase] Added support for composite (tuple) IN operators
with SQLite, by rendering the VALUES keyword for this backend.
As other backends such as DB2 are known to use the same syntax,
the syntax is enabled in the base compiler using a dialect-level
flag tuple_in_values. The change also includes support for
“empty IN tuple” expressions for SQLite when using “in_()”
between a tuple value and an empty set.
+ mssql
* [bug] Ensured that the queries used to reflect indexes and
view definitions will explicitly CAST string parameters into
NVARCHAR, as many SQL Server drivers frequently treat string
values, particularly those with non-ascii characters or
larger string values, as TEXT which often don’t compare
correctly against VARCHAR characters in SQL Server’s
information schema tables for some reason. These CAST
operations already take place for reflection queries against
SQL Server information_schema. tables but were missing from
three additional queries that are against sys.tables.
* Mon Jun 24 2019 [email protected]
- update to version 1.3.5:
* orm
+ Fixed a series of related bugs regarding joined table
inheritance more than two levels deep, in conjunction with
modification to primary key values, where those primary key
columns are also linked together in a foreign key relationship
as is typical for joined table inheritance. The intermediary
table in a three-level inheritance hierachy will now get its
UPDATE if only the primary key value has changed and
passive_updates=False (e.g. foreign key constraints not being
enforced), whereas before it would be skipped; similarly, with
passive_updates=True (e.g. ON UPDATE CASCADE in effect), the
third-level table will not receive an UPDATE statement as was
the case earlier which would fail since CASCADE already modified
it. In a related issue, a relationship linked to a three-level
inheritance hierarchy on the primary key of an intermediary
table of a joined-inheritance hierarchy will also correctly have
its foreign key column updated when the parent object’s primary
key is modified, even if that parent object is a subclass of the
linked parent class, whereas before these classes would not be
counted. References: #4723
+ Fixed bug where the Mapper.all_orm_descriptors accessor would
return an entry for the Mapper itself under the declarative
__mapper___ key, when this is not a descriptor. The
.is_attribute flag that’s present on all InspectionAttr objects
is now consulted, which has also been modified to be True for an
association proxy, as it was erroneously set to False for this
object. References: #4729
+ Fixed regression in Query.join() where the aliased=True flag
would not properly apply clause adaptation to filter criteria,
if a previous join were made to the same entity. This is because
the adapters were placed in the wrong order. The order has been
reversed so that the adapter for the most recent aliased=True
call takes precedence as was the case in 1.2 and earlier. This
broke the “elementtree” examples among other things.
References: #4704
+ Replaced the Python compatbility routines for getfullargspec()
with a fully vendored version from Python 3.3. Originally,
Python was emitting deprecation warnings for this function in
Python 3.8 alphas. While this change was reverted, it was
observed that Python 3 implementations for getfullargspec() are
an order of magnitude slower as of the 3.4 series where it was
rewritten against Signature. While Python plans to improve upon
this situation, SQLAlchemy projects for now are using a simple
replacement to avoid any future issues. References: #4674
+ Reworked the attribute mechanics used by AliasedClass to no
longer rely upon calling __getattribute__ on the MRO of the
wrapped class, and to instead resolve the attribute normally on
the wrapped class using getattr(), and then unwrap/adapt
that. This allows a greater range of attribute styles on the
mapped class including special __getattr__() schemes; but it
also makes the code simpler and more resilient in general.
References: #4694
* sql
+ Fixed a series of quoting issues which all stemmed from the
concept of the literal_column() construct, which when being
“proxied” through a subquery to be referred towards by a label
that matches its text, the label would not have quoting rules
applied to it, even if the string in the Label were set up as a
quoted_name construct. Not applying quoting to the text of the
Label is a bug because this text is strictly a SQL identifier
name and not a SQL expression, and the string should not have
quotes embedded into it already unlike the literal_column()
which it may be applied towards. The existing behavior of a
non-labeled literal_column() being propagated as is on the
outside of a subquery is maintained in order to help with manual
quoting schemes, although it’s not clear if valid SQL can be
generated for such a construct in any case. References: #4730
* postgresql
+ Fixed bug where PostgreSQL dialect could not correctly reflect
an ENUM datatype that has no members, returning a list with None
for the get_enums() call and raising a TypeError when reflecting
a column which has such a datatype. The inspection now returns
an empty list. References: #4701
+ Added support for column sorting flags when reflecting indexes
for PostgreSQL, including ASC, DESC, NULLSFIRST, NULLSLAST. Also
adds this facility to the reflection system in general which can
be applied to other dialects in future releases. Pull request
courtesy Eli Collins. References: #4717
* mysql
+ Fixed bug where MySQL ON DUPLICATE KEY UPDATE would not
accommodate setting a column to the value NULL. Pull request
courtesy Lukáš Banič. References: #4715
* Sat Jun 08 2019 [email protected]
- update to version 1.3.4:
* orm
+ Fixed issue where the AttributeEvents.active_history flag would
not be set for an event listener that propgated to a subclass
via the AttributeEvents.propagate flag. This bug has been
present for the full span of the AttributeEvents system.
References: #4695
+ Fixed regression where new association proxy system was still
not proxying hybrid attributes when they made use of the
@hybrid_property.expression decorator to return an alternate SQL
expression, or when the hybrid returned an arbitrary
PropComparator, at the expression level. This involved futher
generalization of the heuristics used to detect the type of
object being proxied at the level of QueryableAttribute, to
better detect if the descriptor ultimately serves mapped classes
or column expressions. References: #4690
+ Applied the mapper “configure mutex” against the declarative
class mapping process, to guard against the race which can occur
if mappers are used while dynamic module import schemes are
still in the process of configuring mappers for related
classes. This does not guard against all possible race
conditions, such as if the concurrent import has not yet
encountered the dependent classes as of yet, however it guards
against as much as possible within the SQLAlchemy declarative
process. References: #4686
+ A warning is now emitted for the case where a transient object
is being merged into the session with Session.merge() when that
object is already transient in the Session. This warns for the
case where the object would normally be double-inserted.
References: #4647
+ Fixed regression in new relationship m2o comparison logic first
introduced at Improvement to the behavior of many-to-one query
expressions when comparing to an attribute that is persisted as
NULL and is in an un-fetched state in the mapped instance. Since
the attribute has no explicit default, it needs to default to
NULL when accessed in a persistent setting. References: #4676
* engine
+ Moved the “rollback” which occurs during dialect initialization
so that it occurs after additional dialect-specific initialize
steps, in particular those of the psycopg2 dialect which would
inadvertently leave transactional state on the first new
connection, which could interfere with some psycopg2-specific
APIs which require that no transaction is started. Pull request
courtesy Matthew Wilkes. References: #4663
* sql
+ Fixed that the GenericFunction class was inadvertently
registering itself as one of the named functions. Pull request
courtesy Adrien Berchet. References: #4653
+ Fixed issue where double negation of a boolean column wouldn’t
reset the “NOT” operator. References: #4618
+ The GenericFunction namespace is being migrated so that function
names are looked up in a case-insensitive manner, as SQL
functions do not collide on case sensitive differences nor is
this something which would occur with user-defined functions or
stored procedures. Lookups for functions declared with
GenericFunction now use a case insensitive scheme, however a
deprecation case is supported which allows two or more
GenericFunction objects with the same name of different cases to
exist, which will cause case sensitive lookups to occur for that
particular name, while emitting a warning at function
registration time. Thanks to Adrien Berchet for a lot of work on
this complicated feature. References: #4569
* postgresql
+ Fixed an issue where the “number of rows matched” warning would
emit even if the dialect reported
“supports_sane_multi_rowcount=False”, as is the case for
psycogp2 with use_batch_mode=True and others. References: #4661
* mysql
+ Added support for DROP CHECK constraint which is required by
MySQL 8.0.16 to drop a CHECK constraint; MariaDB supports plain
DROP CONSTRAINT. The logic distinguishes between the two
syntaxes by checking the server version string for MariaDB
presence. Alembic migrations has already worked around this
issue by implementing its own DROP for MySQL / MariaDB CHECK
constraints, however this change implements it straight in Core
so that its available for general use. Pull request courtesy
Hannes Hansen. References: #4650
* mssql
+ Added support for SQL Server filtered indexes, via the
mssql_where parameter which works similarly to that of the
postgresql_where index function in the PostgreSQL dialect. See
also: Filtered Indexes References: #4657
+ Added error code 20047 to “is_disconnect” for pymssql. Pull
request courtesy Jon Schuff. References: #4680
* misc
+ Removed errant “sqla_nose.py” symbol from MANIFEST.in which
created an undesirable warning message. References: #4625
* Sun Apr 21 2019 [email protected]
- update to version 1.3.3:
* orm
+ Fixed 1.3 regression in new “ambiguous FROMs” query logic
introduced in Query.join() handles ambiguity in deciding the
“left” side more explicitly where a Query that explicitly places
an entity in the FROM clause with Query.select_from() and also
joins to it using Query.join() would later cause an “ambiguous
FROM” error if that entity were used in additional joins, as the
entity appears twice in the “from” list of the Query. The fix
resolves this ambiguity by folding the standalone entity into
the join that it’s already a part of in the same way that
ultimately happens when the SELECT statement is rendered.
References: #4584
+ Adjusted the Query.filter_by() method to not call and()
internally against multiple criteria, instead passing it off to
Query.filter() as a series of criteria, instead of a single
criteria. This allows Query.filter_by() to defer to
Query.filter()’s treatment of variable numbers of clauses,
including the case where the list is empty. In this case, the
Query object will not have a .whereclause, which allows
subsequent “no whereclause” methods like Query.select_from() to
behave consistently. References: #4606
* postgresql
+ Fixed regression from release 1.3.2 caused by #4562 where a URL
that contained only a query string and no hostname, such as for
the purposes of specifying a service file with connection
information, would no longer be propagated to psycopg2
properly. The change in #4562 has been adjusted to further suit
psycopg2’s exact requirements, which is that if there are any
connection parameters whatsoever, the “dsn” parameter is no
longer required, so in this case the query string parameters are
passed alone. References: #4601
* mssql
+ Fixed issue in SQL Server dialect where if a bound parameter
were present in an ORDER BY expression that would ultimately not
be rendered in the SQL Server version of the statement, the
parameters would still be part of the execution parameters,
leading to DBAPI-level errors. Pull request courtesy Matt
Lewellyn. References: #4587
* misc
+ Fixed behavioral regression as a result of deprecating the
“use_threadlocal” flag for Pool, where the SingletonThreadPool
no longer makes use of this option which causes the “rollback on
return” logic to take place when the same Engine is used
multiple times in the context of a transaction to connect or
implicitly execute, thereby cancelling the transaction. While
this is not the recommended way to work with engines and
connections, it is nonetheless a confusing behavioral change as
when using SingletonThreadPool, the transaction should stay open
regardless of what else is done with the same engine in the same
thread. The use_threadlocal flag remains deprecated however the
SingletonThreadPool now implements its own version of the same
logic. References: #4585
+ Fixed bug where using copy.copy() or copy.deepcopy() on
MutableList would cause the items within the list to be
duplicated, due to an inconsistency in how Python pickle and
copy both make use of __getstate__() and __setstate__()
regarding lists. In order to resolve, a __reduce_ex__ method had
to be added to MutableList. In order to maintain backwards
compatibility with existing pickles based on __getstate__(), the
__setstate__() method remains as well; the test suite asserts
that pickles made against the old version of the class can still
be deserialized by the pickle module. References: #4603
* Wed Apr 10 2019 [email protected]
- update to version 1.3.2:
* orm
+ [orm] [bug] [ext] Restored instance-level support for plain
Python descriptors, e.g. @property objects, in conjunction with
association proxies, in that if the proxied object is not within
ORM scope at all, it gets classified as “ambiguous” but is
proxed directly. For class level access, a basic class
level"__get__()" now returns the
AmbiguousAssociationProxyInstance directly, rather than raising
its exception, which is the closest approximation to the
previous behavior that returned the AssociationProxy itself
that’s possible. Also improved the stringification of these
objects to be more descriptive of current state. References:
[#4573], #4574
+ [orm] [bug] Fixed bug where use of with_polymorphic() or other
aliased construct would not properly adapt when the aliased
target were used as the Select.correlate_except() target of a
subquery used inside of a column_property(). This required a fix
to the clause adaption mechanics to properly handle a selectable
that shows up in the “correlate except” list, in a similar
manner as which occurs for selectables that show up in the
“correlate” list. This is ultimately a fairly fundamental bug
that has lasted for a long time but it is hard to come across
it. References: #4537
+ [orm] [bug] Fixed regression where a new error message that was
supposed to raise when attempting to link a relationship option
to an AliasedClass without using PropComparator.of_type() would
instead raise an AttributeError. Note that in 1.3, it is no
longer valid to create an option path from a plain mapper
relationship to an AliasedClass without using
PropComparator.of_type(). References: #4566
* sql
+ [sql] [bug] [documentation] Thanks to TypeEngine methods
bind_expression, column_expression work with Variant,
type-specific types, we no longer need to rely on recipes that
subclass dialect-specific types directly, TypeDecorator can now
handle all cases. Additionally, the above change made it
slightly less likely that a direct subclass of a base SQLAlchemy
type would work as expected, which could be
misleading. Documentation has been updated to use TypeDecorator
for these examples including the PostgreSQL “ArrayOfEnum”
example datatype and direct support for the “subclass a type
directly” has been removed. References: #4580
* postgresql
+ [postgresql] [feature] Added support for parameter-less
connection URLs for the psycopg2 dialect, meaning, the URL can
be passed to create_engine() as "postgresql+psycopg2://" with no
additional arguments to indicate an empty DSN passed to libpq,
which indicates to connect to “localhost” with no username,
password, or database given. Pull request courtesy Julian
Mehnle. References: #4562
+ [postgresql] [bug] Modified the Select.with_for_update.of
parameter so that if a join or other composed selectable is
passed, the individual Table objects will be filtered from it,
allowing one to pass a join() object to the parameter, as occurs
normally when using joined table inheritance with the ORM. Pull
request courtesy Raymond Lu. References: #4550
* Sun Mar 10 2019 [email protected]
- specfile:
* removed test.patch (included upstream)
- update to version 1.3.1:
* orm
+ [orm] [bug] [ext] Fixed regression where an association proxy
linked to a synonym would no longer work, both at instance level
and at class level. References: #4522
* mssql
+ [mssql] [bug] A commit() is emitted after an isolation level
change to SNAPSHOT, as both pyodbc and pymssql open an implicit
transaction which blocks subsequent SQL from being emitted in
the current transaction. References: #4536
+ [mssql] [bug] Fixed regression in SQL Server reflection due to
[#4393] where the removal of open-ended **kw from the Float
datatype caused reflection of this type to fail due to a “scale”
argument being passed. References: #4525
* Wed Mar 06 2019 [email protected]
- Add patch to fix test failure from upstream test.patch
* Wed Mar 06 2019 [email protected]
- Update to versrion 1.3.0 (bsc#1124593, CVE-2019-7164, CVE-2019-7548):
* See https://docs.sqlalchemy.org/en/latest/changelog/migration_13.html
for deprecation list with this version
* For the changes see https://docs.sqlalchemy.org/en/latest/changelog/changelog_13.html
* Fri Feb 22 2019 [email protected]
- Re-add build dependency on python-devel, removed December 2018,
used for optional C extensions cprocessors.so, cresultproxy.so and cutils.so.
- update to v1.2.18
Bugfix releases, find details at
https://docs.sqlalchemy.org/en/latest/changelog/changelog_12.html#change-1.2.18
* Thu Feb 21 2019 [email protected]
- version update to 1.2.17
https://docs.sqlalchemy.org/en/latest/changelog/changelog_12.html
* Sat Feb 09 2019 [email protected]
- update to version 1.2.16:
Bugfix releases, find details at
https://docs.sqlalchemy.org/en/latest/changelog/changelog_12.html#change-1.2.16
https://docs.sqlalchemy.org/en/latest/changelog/changelog_12.html#change-1.2.15
- 1.2.16 includes the fix to maintain compiled_params / replacement_expressions
within expanding IN (bsc#1176953)
* Tue Dec 04 2018 [email protected]
- Remove superfluous devel dependency for noarch package
* Mon Nov 12 2018 [email protected]
- update to version 1.2.14:
* orm
+ [orm] [bug] Fixed bug in Session.bulk_update_mappings() where
alternate mapped attribute names would result in the primary key
column of the UPDATE statement being included in the SET clause,
as well as the WHERE clause; while usually harmless, for SQL
Server this can raise an error due to the IDENTITY column. This
is a continuation of the same bug that was fixed in #3849, where
testing was insufficient to catch this additional flaw.
References: #4357
+ [orm] [bug] Fixed a minor performance issue which could in some
cases add unnecessary overhead to result fetching, involving the
use of ORM columns and entities that include those same columns
at the same time within a query. The issue has to do with hash /
eq overhead when referring to the column in different ways.
References: #4347
* mysql
+ [mysql] [bug] Fixed regression caused by #4344 released in
1.2.13, where the fix for MySQL 8.0’s case sensitivity problem
with referenced column names when reflecting foreign key
referents is worked around using the information_schema.columns
view. The workaround was failing on OSX /
lower_case_table_names=2 which produces non-matching casing for
the information_schema.columns vs. that of SHOW CREATE TABLE, so
in case-insensitive SQL modes case-insensitive matching is now
used. References: #4361
* Thu Nov 01 2018 [email protected]
- update to version 1.2.13:
* orm
+ [orm] [bug] Fixed bug where “dynamic” loader needs to explicitly
set the “secondary” table in the FROM clause of the query, to
suit the case where the secondary is a join object that is
otherwise not pulled into the query from its columns alone.
References: #4349
* orm declarative
+ [bug] [declarative] [orm] Fixed regression caused by #4326 in
version 1.2.12 where using declared_attr with a mixin in
conjunction with orm.synonym() would fail to map the synonym
properly to an inherited subclass. References: #4350
+ [bug] [declarative] [orm] The column conflict resolution
technique discussed at Resolving Column Conflicts is now
functional for a Column that is also a primary key
column. Previously, a check for primary key columns declared on
a single-inheritance subclass would occur before the column copy
were allowed to pass. References: #4352
* sql
+ [sql] [feature] Refactored SQLCompiler to expose a
SQLCompiler.group_by_clause() method similar to the
SQLCompiler.order_by_clause() and SQLCompiler.limit_clause()
methods, which can be overridden by dialects to customize how
GROUP BY renders. Pull request courtesy Samuel Chou.
+ [sql] [bug] Fixed bug where the Enum.create_constraint flag on
the Enum datatype would not be propagated to copies of the type,
which affects use cases such as declarative mixins and abstract
bases. References: #4341
* postgresql
+ [postgresql] [bug] Added support for the aggregate_order_by
function to receive multiple ORDER BY elements, previously only
a single element was accepted. References: #4337
* mysql
+ [mysql] [bug] Added word function to the list of reserved words
for MySQL, which is now a keyword in MySQL 8.0 References: #4348
+ [mysql] [bug] Added a workaround for a MySQL bug #88718
introduced in the 8.0 series, where the reflection of a foreign
key constraint is not reporting the correct case sensitivity for
the referred column, leading to errors during use of the
reflected constraint such as when using the automap
extension. The workaround emits an additional query to the
information_schema tables in order to retrieve the correct case
sensitive name. References: #4344
* misc
+ [misc] [bug] Fixed issue where part of the utility language
helper internals was passing the wrong kind of argument to the
Python __import__ builtin as the list of modules to be
imported. The issue produced no symptoms within the core library
but could cause issues with external applications that redefine
the __import__ builtin or otherwise instrument it. Pull request
courtesy Joe Urciuoli.
+ [misc] [bug] [py3k] Fixed additional warnings generated by
Python 3.7 due to changes in the organization of the Python
collections and collections.abc packages. Previous collections
warnings were fixed in version 1.2.11. Pull request courtesy
xtreak. References: #4339
+ [bug] [ext] Added missing .index() method to list-based
association collections in the association proxy extension.
* Sat Sep 22 2018 [email protected]
- update to version 1.2.12:
* orm
+ [orm] [bug] Added a check within the weakref cleanup for the
InstanceState object to check for the presence of the dict
builtin, in an effort to reduce error messages generated when
these cleanups occur during interpreter shutdown. Pull request
courtesy Romuald Brunet.
+ [orm] [bug] Fixed bug where use of Lateral construct in
conjunction with Query.join() as well as
Query.select_entity_from() would not apply clause adaption to
the right side of the join. “lateral” introduces the use case of
the right side of a join being correlatable. Previously,
adaptation of this clause wasn’t considered. Note that in 1.2
only, a selectable introduced by Query.subquery() is still not
adapted due to #4304; the selectable needs to be produced by the
select() function to be the right side of the “lateral” join.
References: #4334
+ [orm] [bug] Fixed 1.2 regression caused by #3472 where the
handling of an “updated_at” style column within the context of a
post-update operation would also occur for a row that is to be
deleted following the update, meaning both that a column with a
Python-side value generator would show the now-deleted value
that was emitted for the UPDATE before the DELETE (which was not
the previous behavor), as well as that a SQL- emitted value
generator would have the attribute expired, meaning the previous
value would be unreachable due to the row having been deleted
and the object detached from the session.The “postfetch” logic
that was added as part of #3472 is now skipped entirely for an
object that ultimately is to be deleted. References: #4327
* orm declarative
+ [bug] [declarative] [orm] Fixed bug where the declarative scan
for attributes would receive the expression proxy delivered by a
hybrid attribute at the class level, and not the hybrid
attribute itself, when receiving the descriptor via the
@declared_attr callable on a subclass of an already-mapped
class. This would lead to an attribute that did not report
itself as a hybrid when viewed within
Mapper.all_orm_descriptors. References: #4326
* postgresql
+ [postgresql] [bug] Fixed bug in PostgreSQL dialect where
compiler keyword arguments such as literal_binds=True were not
being propagated to a DISTINCT ON expression. References: #4325
+ [postgresql] [bug] Fixed the postgresql.array_agg() function,
which is a slightly altered version of the usual
functions.array_agg() function, to also accept an incoming
“type” argument without forcing an ARRAY around it, essentially
the same thing that was fixed for the generic function in 1.1 in
[#4107]. References: #4324
+ [postgresql] [bug] Fixed bug in PostgreSQL ENUM reflection where
a case-sensitive, quoted name would be reported by the query
including quotes, which would not match a target column during
table reflection as the quotes needed to be stripped off.
References: #4323
* oracle
+ [oracle] [bug] Fixed issue for cx_Oracle 7.0 where the behavior
of Oracle param.getvalue() now returns a list, rather than a
single scalar value, breaking autoincrement logic throughout the
Core and ORM. The dml_ret_array_val compatibility flag is used
for cx_Oracle 6.3 and 6.4 to establish compatible behavior with
7.0 and forward, for cx_Oracle 6.2.1 and prior a version number
check falls back to the old logic. References: #4335
* misc
+ [bug] [ext] Fixed issue where BakedQuery did not include the
specific query class used by the Session as part of the cache
key, leading to incompatibilities when using custom query
classes, in particular the ShardedQuery which has some different
argument signatures. References: #4328
* Sat Aug 25 2018 [email protected]
- update to version 1.2.11:
* orm declarative
+ [bug] [declarative] [orm] Fixed issue in previously untested use
case, allowing a declarative mapped class to inherit from a
classically-mapped class outside of the declarative base,
including that it accommodates for unmapped intermediate
classes. An unmapped intermediate class may specify
__abstract__, which is now interpreted correctly, or the
intermediate class can remain unmarked, and the classically
mapped base class will be detected within the hierarchy
regardless. In order to anticipate existing scenarios which may
be mixing in classical mappings into existing declarative
hierarchies, an error is now raised if multiple mapped bases are
detected for a given class. References: #4321
* sql
+ [sql] [bug] Fixed issue that is closely related to #3639 where
an expression rendered in a boolean context on a non-native
boolean backend would be compared to 1/0 even though it is
already an implcitly boolean expression, when
ColumnElement.self_group() were used. While this does not affect
the user-friendly backends (MySQL, SQLite) it was not handled by
Oracle (and possibly SQL Server). Whether or not the expression
is implicitly boolean on any database is now determined up front
as an additional check to not generate the integer comparison
within the compliation of the statement. References: #4320
+ [sql] [bug] Added missing window function parameters
WithinGroup.over.range_ and WithinGroup.over.rows parameters to
the WithinGroup.over() and FunctionFilter.over() methods, to
correspond to the range/rows feature added to the “over” method
of SQL functions as part of #3049 in version 1.1. References:
[#4322]
+ [sql] [bug] Fixed bug where the multi-table support for UPDATE
and DELETE statements did not consider the additional FROM
elements as targets for correlation, when a correlated SELECT
were also combined with the statement. This change now includes
that a SELECT statement in the WHERE clause for such a statement
will try to auto-correlate back to these additional tables in
the parent UPDATE/DELETE or unconditionally correlate if
Select.correlate() is used. Note that auto-correlation raises an
error if the SELECT statement would have no FROM clauses as a
result, which can now occur if the parent UPDATE/DELETE
specifies the same tables in its additional set of tables;
specify Select.correlate() explicitly to resolve. References:
[#4313]
* oracle
+ [oracle] [bug] For cx_Oracle, Integer datatypes will now be
bound to “int”, per advice from the cx_Oracle
developers. Previously, using cx_Oracle.NUMBER caused a loss in
precision within the cx_Oracle 6.x series. References: #4309
* misc
+ [bug] [py3k] Started importing “collections” from
“collections.abc” under Python 3.3 and greater for Python 3.8
compatibility. Pull request courtesy Nathaniel Knight.
+ Fixed issue where the “schema” name used for a SQLite database
within table reflection would not quote the schema name
correctly. Pull request courtesy Phillip Cloud.
* Sat Jul 14 2018 [email protected]
- update to version 1.2.10:
* orm
+ [orm] [bug] Fixed bug in Bundle construct where placing two
columns of the same name would be de-duplicated, when the Bundle
were used as part of the rendered SQL, such as in the ORDER BY
or GROUP BY of the statement. References: #4295
+ [orm] [bug] Fixed regression in 1.2.9 due to #4287 where using a
Load option in conjunction with a string wildcard would result
in a TypeError. References: #4298
* sql
+ [sql] [bug] Fixed bug where a Sequence would be dropped
explicitly before any Table that refers to it, which breaks in
the case when the sequence is also involved in a server-side
default for that table, when using MetaData.drop_all(). The step
which processes sequences to be dropped via non server-side
column default functions is now invoked after the table itself
is dropped. References: #4300
* Sun Jul 01 2018 [email protected]
- removed patch fix_test_reflection.patch (included upstream)
- update to version 1.2.9:
* orm
+ [orm] [bug] Fixed issue where chaining multiple join elements
inside of Query.join() might not correctly adapt to the previous
left-hand side, when chaining joined inheritance classes that
share the same base class.
References: #3505
+ [orm] [bug] Fixed bug in cache key generation for baked queries
which could cause a too-short cache key to be generated for the
case of eager loads across subclasses. This could in turn cause
the eagerload query to be cached in place of a non-eagerload
query, or vice versa, for a polymorhic “selectin” load, or
possibly for lazy loads or selectin loads as well.
References: #4287
+ [orm] [bug] Fixed bug in new polymorphic selectin loading where
the BakedQuery used internally would be mutated by the given
loader options, which would both inappropriately mutate the
subclass query as well as carry over the effect to subsequent
queries.
References: #4286
+ [orm] [bug] Fixed regression caused by #4256 (itself a
regression fix for #4228) which breaks an undocumented behavior
which converted for a non-sequence of entities passed directly
to the Query constructor into a single-element sequence. While
this behavior was never supported or documented, it’s already in
use so has been added as a behavioral contract to Query.
References: #4269
+ [orm] [bug] Fixed an issue that was both a performance
regression in 1.2 as well as an incorrect result regarding the
“baked” lazy loader, involving the generation of cache keys from
the original Query object’s loader options. If the loader
options were built up in a “branched” style using common base
elements for multiple options, the same options would be
rendered into the cache key repeatedly, causing both a
performance issue as well as generating the wrong cache
key. This is fixed, along with a performance improvement when
such “branched” options are applied via Query.options() to
prevent the same option objects from being applied repeatedly.
References: #4270
* sql
+ [sql] [bug] Fixed regression in 1.2 due to #4147 where a Table
that has had some of its indexed columns redefined with new
ones, as would occur when overriding columns during reflection
or when using Table.extend_existing, such that the
Table.tometadata() method would fail when attempting to copy
those indexes as they still referred to the replaced column. The
copy logic now accommodates for this condition.
References: #4279
* mysql
+ [mysql] [bug] Fixed percent-sign doubling in
mysql-connector-python dialect, which does not require
de-doubling of percent signs. Additionally, the mysql-
connector-python driver is inconsistent in how it passes the
column names in cursor.description, so a workaround decoder has
been added to conditionally decode these
randomly-sometimes-bytes values to unicode only if needed. Also
improved test support for mysql-connector-python, however it
should be noted that this driver still has issues with unicode
that continue to be unresolved as of yet.
+ [mysql] [bug] Fixed bug in index reflection where on MySQL 8.0
an index that includes ASC or DESC in an indexed column
specfication would not be correctly reflected, as MySQL 8.0
introduces support for returning this information in a table
definition string.
References: #4293
+ [mysql] [bug] Fixed bug in MySQLdb dialect and variants such as
PyMySQL where an additional “unicode returns” check upon
connection makes explicit use of the “utf8” character set, which
in MySQL 8.0 emits a warning that utf8mb4 should be used. This
is now replaced with a utf8mb4 equivalent. Documentation is also
updated for the MySQL dialect to specify utf8mb4 in all
examples. Additional changes have been made to the test suite to
use utf8mb3 charsets and databases (there seem to be collation
issues in some edge cases with utf8mb4), and to support
configuration default changes made in MySQL 8.0 such as
explicit_defaults_for_timestamp as well as new errors raised for
invalid MyISAM indexes.
References: #4283
+ [mysql] [bug] The Update construct now accommodates a Join
object as supported by MySQL for UPDATE..FROM. As the construct
already accepted an alias object for a similar purpose, the
feature of UPDATE against a non-table was already implied so
this has been added.
References: #3645
* sqlite
+ [sqlite] [bug] Fixed issue in test suite where SQLite 3.24 added
a new reserved word that conflicted with a usage in
TypeReflectionTest. Pull request courtesy Nils Philippsen.
* mssql
+ [mssql] [bug] Fixed bug in MSSQL reflection where when two
same-named tables in different schemas had same-named primary
key constraints, foreign key constraints referring to one of the
tables would have their columns doubled, causing errors. Pull
request courtesy Sean Dunn.
References: #4228
+ [mssql] [bug] [py3k] Fixed issue within the SQL Server dialect
under Python 3 where when running against a non-standard SQL
server database that does not contain either the
“sys.dm_exec_sessions” or “sys.dm_pdw_nodes_exec_sessions”
views, leading to a failure to fetch the isolation level, the
error raise would fail due to an UnboundLocalError.
References: #4273
* oracle
+ [oracle] [feature] Added a new event currently used only by the
cx_Oracle dialect, DialectEvents.setiputsizes(). The event
passes a dictionary of BindParameter objects to DBAPI-specific
type objects that will be passed, after conversion to parameter
names, to the cx_Oracle cursor.setinputsizes() method. This
allows both visibility into the setinputsizes process as well as
the ability to alter the behavior of what datatypes are passed
to this method.
See als Fine grained control over cx_Oracle data binding and performance with setinputsizes
References: #4290
+ [oracle] [bug] [mysql] Fixed INSERT FROM SELECT with CTEs for
the Oracle and MySQL dialects, where the CTE was being placed
above the entire statement as is typical with other databases,
however Oracle and MariaDB 10.2 wants the CTE underneath the
“INSERT” segment. Note that the Oracle and MySQL dialects don’t
yet work when a CTE is applied to a subquery inside of an UPDATE
or DELETE statement, as the CTE is still applied to the top
rather than inside the subquery.
References: #4275
* misc
+ [feature] [ext] Added new attribute Query.lazy_loaded_from which
is populated with an InstanceState that is using this Query in
order to lazy load a relationship. The rationale for this is
that it serves as a hint for the horizontal sharding feature to
use, such that the identity token of the state can be used as
the default identity token to use for the query within
id_chooser().
References: #4243
+ [bug] [py3k] Replaced the usage of inspect.formatargspec() with
a vendored version copied from the Python standard library, as
inspect.formatargspec() is deprecated and as of Python 3.7.0 is
emitting a warning.
References: #4291
* Tue Jun 26 2018 [email protected]
- add upstream fix_test_reflection.patch to fix tests with new sqlite
* Thu Jun 21 2018 [email protected]
- update to version 1.2.8:
* orm
+ [orm] [bug] Fixed regression in 1.2.7 caused by #4228, which
itself was fixing a 1.2-level regression, where the query_cls
callable passed to a Session was assumed to be a subclass of
Query with class method availability, as opposed to an
arbitrary callable. In particular, the dogpile caching example
illustrates query_cls as a function and not a Query subclass.
References: #4256
+ [orm] [bug] Fixed a long-standing regression that occurred in
version 1.0, which prevented the use of a custom MapperOption
that alters the _params of a Query object for a lazy load,
since the lazy loader itself would overwrite those parameters.
This applies to the “temporal range” example on the wiki. Note
however that the Query.populate_existing() method is now
required in order to rewrite the mapper options associated with
an object already loaded in the identity map.
As part of this change, a custom defined MapperOption will now
cause lazy loaders related to the target object to use a non-
baked query by default unless the
MapperOption._generate_cache_key() method is implemented. In
particular, this repairs one regression which occured when
using the dogpile.cache “advanced” example, which was not
returning cached results and instead emitting SQL due to an
incompatibility with the baked query loader; with the change,
the RelationshipCache option included for many releases in the
dogpile example will disable the “baked” query altogether. Note
that the dogpile example is also modernized to avoid both of
these issues as part of issue #4258. References: #4128
+ [orm] [bug] Fixed bug where the new
baked.Result.with_post_criteria() method would not interact
with a subquery-eager loader correctly, in that the “post
criteria” would not be applied to embedded subquery
eager loaders. This is related to #4128 in that the post
criteria feature is now used by the lazy loader.
+ [orm] [bug] Updated the dogpile.caching example to include new
structures that accommodate for the “baked” query system, which
is used by default within lazy loaders and some eager
relationship loaders. The dogpile.caching “relationship_caching”
and “advanced” examples were also broken due to #4256. The
issue here is also worked-around by the fix in #4128.
References: #4258
* engine
+ [engine] [bug] Fixed connection pool issue whereby if a
disconnection error were raised during the connection pool’s
“reset on return” sequence in conjunction with an explicit
transaction opened against the enclosing Connection object
(such as from calling Session.close() without a rollback or
commit, or calling Connection.close() without first closing a
transaction declared with Connection.begin()), a double-checkin
would result, which could then lead towards concurrent
checkouts of the same connection. The double-checkin condition
is now prevented overall by an assertion, as well as the
specific double-checkin scenario has been fixed.
References: #4252
+ [engine] [bug] Fixed a reference leak issue where the values of
the parameter dictionary used in a statement execution would
remain referenced by the “compiled cache”, as a result of
storing the key view used by Python 3 dictionary keys(). Pull
request courtesy Olivier Grisel.
* sql
+ [sql] [bug] Fixed issue where the “ambiguous literal” error
message used when interpreting literal values as SQL expression
values would encounter a tuple value, and fail to format the
message properly. Pull request courtesy Miguel Ventura.
* mssql
+ [mssql] [bug] Fixed a 1.2 regression caused by #4061 where the
SQL Server “BIT” type would be considered to be “native
boolean”. The goal here was to avoid creating a CHECK
constraint on the column, however the bigger issue is that the
BIT value does not behave like a true/false constant and cannot
be interpreted as a standalone expression, e.g. “WHERE
<column>”. The SQL Server dialect now goes back to being non-
native boolean, but with an extra flag that still avoids
creating the CHECK constraint. References: #4250
* oracle
+ [oracle] [bug] The Oracle BINARY_FLOAT and BINARY_DOUBLE
datatypes now participate within cx_Oracle.setinputsizes(),
passing along NATIVE_FLOAT, so as to support the NaN value.
Additionally, oracle.BINARY_FLOAT, oracle.BINARY_DOUBLE and
oracle.DOUBLE_PRECISION now subclass Float, since these are
floating point datatypes, not decimal. These datatypes were
already defaulting the Float.asdecimal flag to False in line
with what Float already does. References: #4264
+ [oracle] [bug] Added reflection capabilities for the
oracle.BINARY_FLOAT, oracle.BINARY_DOUBLE datatypes.
+ [oracle] [bug] Altered the Oracle dialect such that when an
Integer type is in use, the cx_Oracle.NUMERIC type is set up
for setinputsizes(). In SQLAlchemy 1.1 and earlier,
cx_Oracle.NUMERIC was passed for all numeric types
unconditionally, and in 1.2 this was removed to allow for
better numeric precision. However, for integers, some
database/client setups will fail to coerce boolean values
True/False into integers which introduces regressive behavior
when using SQLAlchemy 1.2. Overall, the setinputsizes logic
seems like it will need a lot more flexibility going forward so
this is a start for that. References: #4259
* misc
+ [bug] [ext] The horizontal sharding extension now makes use of
the identity token added to ORM identity keys as part of #4137,
when an object refresh or column-based deferred load or
unexpiration operation occurs. Since we know the “shard” that
the object originated from, we make use of this value when
refreshing, thereby avoiding queries against other shards that
don’t match this object’s identity in any case.
References: #4247
+ [bug] [ext] Fixed a race condition which could occur if automap
AutomapBase.prepare() were used within a multi-threaded context
against other threads which may call configure_mappers() as a
result of use of other mappers. The unfinished mapping work of
automap is particularly sensitive to being pulled in by a
configure_mappers() step leading to errors. References: #4266
+ [bug] [tests] Fixed a bug in the test suite where if an
external dialect returned None for server_version_info, the
exclusion logic would raise an AttributeError.
References: #4249
* Sat Apr 21 2018 [email protected]
- update to version 1.2.7:
* orm
+ [orm] [bug] Fixed regression in 1.2 within sharded query feature
where the new “identity_token” element was not being correctly
considered within the scope of a lazy load operation, when
searching the identity map for a related many-to-one
element. The new behavior will allow for making use of the
“id_chooser” in order to determine the best identity key to
retrieve from the identity map. In order to achieve this, some
refactoring of 1.2’s “identity_token” approach has made some
slight changes to the implementation of ShardedQuery which
should be noted for other derivations of this class.
References: #4228
+ [orm] [bug] Fixed issue in single-inheritance loading where the
use of an aliased entity against a single-inheritance subclass
in conjunction with the Query.select_from() method would cause
the SQL to be rendered with the unaliased table mixed in to the
query, causing a cartesian product. In particular this was
affecting the new “selectin” loader when used against a
single-inheritance subclass. References: #4241
* sql
+ [sql] [bug] Fixed issue where the compilation of an INSERT
statement with the “literal_binds” option that also uses an
explicit sequence and “inline” generation, as on Postgresql and
Oracle, would fail to accommodate the extra keyword argument
within the sequence processing routine. References: #4231
* postgresql
+ [postgresql] [feature] Added new PG type postgresql.REGCLASS
which assists in casting table names to OID values. Pull request
courtesy Sebastian Bank. References: #4160
+ [postgresql] [bug] Fixed bug where the special “not equals”
operator for the Postgresql “range” datatypes such as DATERANGE
would fail to render “IS NOT NULL” when compared to the Python
None value. References: #4229
* mssql
+ [mssql] [bug] Fixed 1.2 regression caused by #4060 where the
query used to reflect SQL Server cross-schema foreign keys was
limiting the criteria incorrectly. References: #4234
* oracle
+ [oracle] [bug] The Oracle NUMBER datatype is reflected as
INTEGER if the precision is NULL and the scale is zero, as this
is how INTEGER values come back when reflected from Oracle’s
tables. Pull request courtesy Kent Bower.
* Sun Apr 01 2018 [email protected]
- specfile:
* run spec-cleaner
- update to version 1.2.6:
* orm
+ [orm] [bug] Fixed bug where using Mutable.associate_with() or
Mutable.as_mutable() in conjunction with a class that has non-
primary mappers set up with alternatively-named attributes would
produce an attribute error. Since non-primary mappers are not
used for persistence, the mutable extension now excludes
non-primary mappers from its instrumentation steps. References:
[#4215]
* engine
+ [engine] [bug] Fixed bug in connection pool where a connection
could be present in the pool without all of its “connect” event
handlers called, if a previous “connect” handler threw an
exception; note that the dialects themselves have connect
handlers that emit SQL, such as those which set transaction
isolation, which can fail if the database is in a non-available
state, but still allows a connection. The connection is now
invalidated first if any of the connect handlers fail.
References: #4225
* sql
+ [sql] [bug] Fixed a regression that occurred from the previous
fix to #4204 in version 1.2.5, where a CTE that refers to itself
after the CTE.alias() method has been called would not refer to
iself correctly. References: #4204
* postgresql
+ [postgresql] [feature] Added support for “PARTITION BY” in
Postgresql table definitions, using
“postgresql_partition_by”. Pull request courtesy Vsevolod
Solovyov.
* mssql
+ [mssql] [bug] Adjusted the SQL Server version detection for
pyodbc to only allow for numeric tokens, filtering out
non-integers, since the dialect does tuple- numeric comparisons
with this value. This is normally true for all known SQL Server
/ pyodbc drivers in any case. References: #4227
* oracle
+ [oracle] [bug] The minimum cx_Oracle version supported is 5.2
(June 2015). Previously, the dialect asserted against version
5.0 but as of 1.2.2 we are using some symbols that did not
appear until 5.2. References: #4211
* misc
+ [bug] [declarative] Removed a warning that would be emitted when
calling upon __table_args__, __mapper_args__ as named with a
@declared_attr method, when called from a non-mapped declarative
mixin. Calling these directly is documented as the approach to
use when one is overidding one of these methods on a mapped
class. The warning still emits for regular attribute names.
References: #4221
* Thu Mar 08 2018 [email protected]
- update to version 1.2.5:
* orm
+ [orm] [feature] Added new feature
Query.only_return_tuples(). Causes the Query object to return
keyed tuple objects unconditionally even if the query is against
a single entity. Pull request courtesy Eric Atkin.
+ [orm] [bug] Fixed bug in new “polymorphic selectin” loading when
a selection of polymorphic objects were to be partially loaded
from a relationship lazy loader, leading to an “empty IN”
condition within the load that raises an error for the “inline”
form of “IN”. References: #4199
+ [orm] [bug] Fixed 1.2 regression where a mapper option that
contains an AliasedClass object, as is typical when using the
QueryableAttribute.of_type() method, could not be pickled. 1.1’s
behavior was to omit the aliased class objects from the path, so
this behavior is restored. References: #4209
* sql
+ [sql] [bug] Fixed bug in :class:.`CTE` construct along the same
lines as that of #4204 where a CTE that was aliased would not
copy itself correctly during a “clone” operation as is frequent
within the ORM as well as when using the ClauseElement.params()
method. References: #4210
+ [sql] [bug] Fixed bug in CTE rendering where a CTE that was also
turned into an Alias would not render its “ctename AS aliasname”
clause appropriately if there were more than one reference to
the CTE in a FROM clause. References: #4204
+ [sql] [bug] Fixed bug in new “expanding IN parameter” feature
where the bind parameter processors for values wasn’t working at
all, tests failed to cover this pretty basic case which includes
that ENUM values weren’t working. References: #4198
* postgresql
+ [postgresql] [bug] [py3k] Fixed bug in Postgresql COLLATE /
ARRAY adjustment first introduced in #4006 where new behaviors
in Python 3.7 regular expressions caused the fix to fail. This
change is also backported to: 1.1.18 References: #4208
* mysql
+ [mysql] [bug] MySQL dialects now query the server version using
SELECT @@version explicitly to the server to ensure we are
getting the correct version information back. Proxy servers like
MaxScale interfere with the value that is passed to the DBAPI’s
connection.server_version value so this is no longer reliable.
This change is also backported to: 1.1.18 References: #4205
* Fri Feb 23 2018 [email protected]
- update to version 1.2.4:
* orm
+ [orm] [bug] Fixed 1.2 regression in ORM versioning feature where
a mapping against a select() or alias() that also used a
versioning column against the underlying table would fail due to
the check added as part of #3673. References: #4193
* engine
+ [engine] [bug] Fixed regression caused in 1.2.3 due to fix from
[#4181] where the changes to the event system involving Engine and
OptionEngine did not accommodate for event removals, which would
raise an AttributeError when invoked at the class level.
References: #4190
* sql
+ [sql] [bug] Fixed bug where CTE expressions would not have their
name or alias name quoted when the given name is case sensitive
or otherwise requires quoting. Pull request courtesy Eric Atkin.
References: #4197
* Sun Feb 18 2018 [email protected]
- update to version 1.2.3:
* orm
+ [orm] [feature] Added new argument
attributes.set_attribute.inititator to the
attributes.set_attribute() function, allowing an event token
received from a listener function to be propagated to subsequent
set events.
+ [orm] [bug] Fixed issue in post_update feature where an UPDATE
is emitted when the parent object has been deleted but the
dependent object is not. This issue has existed for a long time
however since 1.2 now asserts rows matched for post_update, this
was raising an error. This change is also backported to: 1.1.16
References: #4187
+ [orm] [bug] Fixed regression caused by fix for issue #4116
affecting versions 1.2.2 as well as 1.1.15, which had the effect
of mis-calculation of the “owning class” of an AssociationProxy
as the NoneType class in some declarative mixin/inheritance
situations as well as if the association proxy were accessed off
of an un-mapped class. The “figure out the owner” logic has been
replaced by an in-depth routine that searches through the
complete mapper hierarchy assigned to the class or subclass to
determine the correct (we hope) match; will not assign the owner
if no match is found. An exception is now raised if the proxy is
used against an un-mapped instance. This change is also
backported to: 1.1.16 References: #4185
+ [orm] [bug] Fixed bug where the Bundle object did not correctly
report upon the primary Mapper object represened by the bundle,
if any. An immediate side effect of this issue was that the new
selectinload loader strategy wouldn’t work with the horizontal
sharding extension. References: #4175
+ [orm] [bug] Fixed bug in concrete inheritance mapping where
user-defined attributes such as hybrid properties that mirror
the names of mapped attributes from sibling classes would be
overwritten by the mapper as non-accessible at the instance
level. Additionally ensured that user-bound descriptors are not
implicitly invoked at the class level during the mapper
configuration stage. References: #4188
+ [orm] [bug] Fixed bug where the orm.reconstructor() event helper
would not be recognized if it were applied to the __init__()
method of the mapped class. References: #4178
* engine
+ [engine] [bug] Fixed bug where events associated with an Engine
at the class level would be doubled when the
Engine.execution_options() method were used. To achieve this,
the semi-private class OptionEngine no longer accepts events
directly at the class level and will raise an error; the class
only propagates class-level events from its parent
Engine. Instance-level events continue to work as before.
References: #4181
+ [engine] [bug] The URL object now allows query keys to be
specified multiple times where their values will be joined into
a list. This is to support the plugins feature documented at
CreateEnginePlugin which documents that “plugin” can be passed
multiple times. Additionally, the plugin names can be passed to
create_engine() outside of the URL using the new
create_engine.plugins parameter. References: #4170
* sql
+ [sql] [feature] Added support for Enum to persist the values of
the enumeration, rather than the keys, when using a Python
pep-435 style enumerated object. The user supplies a callable
function that will return the string values to be
persisted. This allows enumerations against non-string values to
be value-persistable as well. Pull request courtesy Jon Snyder.
References: #3906
+ [sql] [bug] Fixed bug where the Enum type wouldn’t handle enum
“aliases” correctly, when more than one key refers to the same
value. Pull request courtesy Daniel Knell. References: #4180
* postgresql
+ [postgresql] [bug] Added “SSL SYSCALL error: Operation timed
out” to the list of messages that trigger a “disconnect”
scenario for the psycopg2 driver. Pull request courtesy André
Cruz. This change is also backported to: 1.1.16
+ [postgresql] [bug] Added “TRUNCATE” to the list of keywords
accepted by the Postgresql dialect as an “autocommit”-triggering
keyword. Pull request courtesy Jacob Hayes. This change is also
backported to: 1.1.16
* sqlite
+ [sqlite] [bug] Fixed the import error raised when a platform has
neither pysqlite2 nor sqlite3 installed, such that the
sqlite3-related import error is raised, not the pysqlite2 one
which is not the actual failure mode. Pull request courtesy
Robin.
* oracle
+ [oracle] [feature] The ON DELETE options for foreign keys are
now part of Oracle reflection. Oracle does not support ON UPDATE
cascades. Pull request courtesy Miroslav Shubernetskiy.
+ [oracle] [bug] Fixed bug in cx_Oracle disconnect detection, used
by pre_ping and other features, where an error could be raised
as DatabaseError which includes a numeric error code; previously
we weren’t checking in this case for a disconnect code.
References: #4182
* misc
+ [bug] [pool] Fixed a fairly serious connection pool bug where a
connection that is acquired after being refreshed as a result of
a user-defined DisconnectionError or due to the 1.2-released
“pre_ping” feature would not be correctly reset if the
connection were returned to the pool by weakref cleanup
(e.g. the front-facing object is garbage collected); the weakref
would still refer to the previously invalidated DBAPI connection
which would have the reset operation erroneously called upon it
instead. This would lead to stack traces in the logs and a
connection being checked into the pool without being reset,
which can cause locking issues. This change is also backported
to: 1.1.16 References: #4184
+ [bug] [tests] A test added in 1.2 thought to confirm a Python
2.7 behavior turns out to be confirming the behavior only as of
Python 2.7.8. Python bug #8743 still impacts set comparison in
Python 2.7.7 and earlier, so the test in question involving
AssociationSet no longer runs for these older Python 2.7
versions. References: #3265
* Sun Jan 28 2018 [email protected]
- update to version 1.2.2:
* orm
+ [orm] [bug] Fixed 1.2 regression regarding new bulk_replace
event where a backref would fail to remove an object from the
previous owner when a bulk-assignment assigned the object to a
new owner. References: #4171
* mysql
+ [mysql] [bug] Added more MySQL 8.0 reserved words to the MySQL
dialect for quoting purposes. Pull request courtesy Riccardo
Magliocchetti.
* mssql
+ [mssql] [bug] Added ODBC error code 10054 to the list of error
codes that count as a disconnect for ODBC / MSSQL server.
References: #4164
* oracle
+ [oracle] [bug] The cx_Oracle dialect now calls setinputsizes()
with cx_Oracle.NCHAR unconditionally when the NVARCHAR2
datatype, in SQLAlchemy corresponding to sqltypes.Unicode(), is
in use. Per cx_Oracle’s author this allows the correct
conversions to occur within the Oracle client regardless of the
setting for NLS_NCHAR_CHARACTERSET. References: #4163
* Wed Jan 17 2018 [email protected]
- update to version 1.2.1:
* orm
+ [orm] [bug] Fixed bug where an object that is expunged during a
rollback of a nested or subtransaction which also had its
primary key mutated would not be correctly removed from the
session, causing subsequent issues in using the session.
+ [orm] [bug] Fixed regression where pickle format of a Load /
_UnboundLoad object (e.g. loader options) changed and
__setstate__() was raising an UnboundLocalError for an object
received from the legacy format, even though an attempt was made
to do so. tests are now added to ensure this works.
+ [orm] [bug] Fixed regression caused by new lazyload caching
scheme in #3954 where a query that makes use of loader options
with of_type would cause lazy loads of unrelated paths to fail
with a TypeError.
+ [orm] [bug] Fixed bug in new “selectin” relationship loader
where the loader could try to load a non-existent relationship
when loading a collection of polymorphic objects, where only
some of the mappers include that relationship, typically when
PropComparator.of_type() is being used.
* sql
+ [sql] [bug] Fixed bug in Insert.values() where using the
“multi-values” format in combination with Column objects as keys
rather than strings would fail. Pull request courtesy Aubrey
Stark-Toller.
* mssql
+ [mssql] [bug] Fixed regression in 1.2 where newly repaired
quoting of collation names in #3785 breaks SQL Server, which
explicitly does not understand a quoted collation name. Whether
or not mixed-case collation names are quoted or not is now
deferred down to a dialect-level decision so that each dialect
can prepare these identifiers directly.
* oracle
+ [oracle] [bug] Fixed regression where the removal of most
setinputsizes rules from cx_Oracle dialect impacted the
TIMESTAMP datatype’s ability to retrieve fractional seconds.
+ [oracle] [bug] Fixed regression in Oracle imports where a
missing comma caused an undefined symbol to be present. Pull
request courtesy Miroslav Shubernetskiy.
* misc
+ [bug] [ext] Fixed regression in association proxy due to #3769
(allow for chained any() / has()) where contains() against an
association proxy chained in the form (o2m relationship,
associationproxy(m2o relationship, m2o relationship)) would
raise an error regarding the re-application of contains() on the
final link of the chain.
+ [bug] [tests] Removed an oracle-specific requirements rule from
the public test suite that was interfering with third party
dialect suites.
+ [bug] [tests] Added a new exclusion rule
group_by_complex_expression which disables tests that use “GROUP
BY <expr>”, which seems to be not viable for at least two third
party dialects.
* Wed Jan 03 2018 [email protected]
- specfile:
* updated test requirements
* Sun Dec 31 2017 [email protected]
- update to version 1.2.0:
* See https://docs.sqlalchemy.org/en/latest/changelog/changelog_12.html
* Mon Sep 25 2017 [email protected]
- update to version 1.1.14:
* orm
+ [orm] [bug] Fixed bug in Session.merge() following along similar
lines as that of #4030, where an internal check for a target
object in the identity map could lead to an error if it were to
be garbage collected immediately before the merge routine
actually retrieves the object. References: #4069
+ [orm] [bug] Fixed bug where an undefer_group() option would not
be recognized if it extended from a relationship that was
loading using joined eager loading. Additionally, as the bug led
to excess work being performed, Python function call counts are
also improved by 20% within the initial calculation of result
set columns, complementing the joined eager load improvements of
[#3915]. References: #4048
+ [orm] [bug] Fixed race condition in ORM identity map which would
cause objects to be inappropriately removed during a load
operation, causing duplicate object identities to occur,
particularly under joined eager loading which involves
deduplication of objects. The issue is specific to garbage
collection of weak references and is observed only under the
Pypy interpreter. References: #4068
+ [orm] [bug] Fixed bug in Session.merge() where objects in a
collection that had the primary key attribute set to None for a
key that is typically autoincrementing would be considered to be
a database-persisted key for part of the internal deduplication
process, causing only one object to actually be inserted in the
database. References: #4056
+ [orm] [bug] An InvalidRequestError is raised when a synonym() is
used against an attribute that is not against a MapperProperty,
such as an association proxy. Previously, a recursion overflow
would occur trying to locate non-existent attributes. References: #4067
* sql
+ [sql] [bug] Altered the range specification for window functions
to allow for two of the same PRECEDING or FOLLOWING keywords in
a range by allowing for the left side of the range to be
positive and for the right to be negative, e.g. (1, 3) is “1
FOLLOWING AND 3 FOLLOWING”. References: #4053
- changes from version 1.1.13:
* oracle
+ [oracle] [bug] [py2k] [performance] Fixed performance regression
caused by the fix for #3937 where cx_Oracle as of version 5.3
dropped the .UNICODE symbol from its namespace, which was
interpreted as cx_Oracle’s “WITH_UNICODE” mode being turned on
unconditionally, which invokes functions on the SQLAlchemy side
which convert all strings to unicode unconditionally and causing
a performance impact. In fact, per cx_Oracle’s author the
“WITH_UNICODE” mode has been removed entirely as of 5.1, so the
expensive unicode conversion functions are no longer necessary
and are disabled if cx_Oracle 5.1 or greater is detected under
Python 2. The warning against “WITH_UNICODE” mode that was
removed under #3937 is also restored.
This change is also backported to: 1.0.19
References: #4035
* Tue Aug 08 2017 [email protected]
- update to 1.1.12:
* See http://docs.sqlalchemy.org/en/latest/changelog/changelog_11.html#change-1.1.12
* Fri Jul 07 2017 [email protected]
- Update to 1.1.11:
* See http://docs.sqlalchemy.org/en/latest/changelog/changelog_11.html#change-1.1.11
- Update to 1.1.10:
* See http://docs.sqlalchemy.org/en/latest/changelog/changelog_11.html#change-1.1.10
* Sat May 06 2017 [email protected]
- Don't provide python2-sqlalchemy, singlespec packages should use
correct name.
* Mon May 01 2017 [email protected]
- Add literal python-sqlalchemy provides.
* Tue Apr 18 2017 [email protected]
- Update to 1.1.9:
* See http://docs.sqlalchemy.org/en/latest/changelog/changelog_11.html#change-1.1.9
- Update to 1.1.8:
* See http://docs.sqlalchemy.org/en/latest/changelog/changelog_11.html#change-1.1.8
- Update to 1.1.7:
* See http://docs.sqlalchemy.org/en/latest/changelog/changelog_11.html#change-1.1.7
- Update to 1.1.6:
* See http://docs.sqlalchemy.org/en/latest/changelog/changelog_11.html#change-1.1.6
- Update to 1.1.5:
* See http://docs.sqlalchemy.org/en/latest/changelog/changelog_11.html#change-1.1.5
- Update to 1.1.4:
* See http://docs.sqlalchemy.org/en/latest/changelog/changelog_11.html#change-1.1.4
- Update to 1.1.3:
* See http://docs.sqlalchemy.org/en/latest/changelog/changelog_11.html#change-1.1.3
- Update to 1.1.2:
* See http://docs.sqlalchemy.org/en/latest/changelog/changelog_11.html#change-1.1.2
- Update to 1.1.1:
* See http://docs.sqlalchemy.org/en/latest/changelog/changelog_11.html#change-1.1.1
- Update to 1.1.0:
* See http://docs.sqlalchemy.org/en/latest/changelog/changelog_11.html#change-1.1.0
- Update to 1.0.18:
* See http://docs.sqlalchemy.org/en/latest/changelog/changelog_10.html#change-1.0.18
- Update to 1.0.17:
* See http://docs.sqlalchemy.org/en/latest/changelog/changelog_10.html#change-1.0.17
- Update to 1.0.16:
* See http://docs.sqlalchemy.org/en/latest/changelog/changelog_10.html#change-1.0.16
- Implement single-spec version.
* Thu Sep 15 2016 [email protected]
- Update to 1.0.15:
* See http://docs.sqlalchemy.org/en/latest/changelog/changelog_10.html#change-1.0.15
http://docs.sqlalchemy.org/en/latest/changelog/changelog_10.html#change-1.0.14
* Mon Jun 06 2016 [email protected]
- fix source url
* Fri Jun 03 2016 [email protected]
- update to 1.0.13:
* see http://docs.sqlalchemy.org/en/latest/changelog/changelog_10.html#change-1.0.12
and http://docs.sqlalchemy.org/en/latest/changelog/changelog_10.html#change-1.0.13
Remove 0001-fix-sqlite3.10.0-test.patch. Applied upstream.
* Thu Feb 11 2016 [email protected]
- Add 0001-fix-sqlite3.10.0-test.patch
Backport fix after SQLite3.10 upgrade
* Mon Jan 11 2016 [email protected]
- update to 1.0.11:
* see http://docs.sqlalchemy.org/en/latest/changelog/changelog_10.html#change-1.0.11
* Sun Oct 04 2015 [email protected]
- update to 1.0.8:
* see http://docs.sqlalchemy.org/en/latest/changelog/changelog_10.html#change-1.0.8
* Mon Jun 15 2015 [email protected]
- update to version 1.0.5:
* see http://docs.sqlalchemy.org/en/latest/changelog/changelog_10.html#change-1.0.5
* Sun May 24 2015 [email protected]
- update to 1.0.4:
+ see http://docs.sqlalchemy.org/en/latest/changelog/changelog_10.html#change-1.0.4
+ see http://docs.sqlalchemy.org/en/latest/changelog/migration_10.html
* Wed Apr 22 2015 [email protected]
- update to 0.9.9:
+ See http://docs.sqlalchemy.org/en/latest/changelog/changelog_09.html#change-0.9.9
* Thu Jan 08 2015 [email protected]
- Update to version 0.9.8:
+ See http://docs.sqlalchemy.org/en/latest/changelog/changelog_09.html#change-0.9.8
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