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Name: python311-SQLAlchemy | Distribution: SUSE Linux Enterprise 15 |
Version: 2.0.19 | Vendor: SUSE LLC <https://www.suse.com/> |
Release: 150400.6.5.12 | Build date: Thu Oct 19 12:26:31 2023 |
Group: Unspecified | Build host: h03-ch2b |
Size: 61234287 | Source RPM: python-SQLAlchemy-2.0.19-150400.6.5.12.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
* Sun Aug 13 2023 dmueller@suse.com - use generic Cython >= 3 buildrequires * Tue Jul 25 2023 dmueller@suse.com - update to 2.0.19: * Various bugfixes, see https://docs.sqlalchemy.org/en/20/changelog/changelog_20.html#change-2.0.19 * Mon Jun 19 2023 dmueller@suse.com - update to 2.0.16: * Python 3.12 support * Fixed regression in the 2.0 series where the default value of validates.include_backrefs got changed to False for the validates() function * Unified the custom PostgreSQL operator definitions * Added support for PostgreSQL 10 NULLS NOT DISTINCT feature of unique indexes and unique constraints * Use proper precedence on PostgreSQL specific operators, such as @> * see https://docs.sqlalchemy.org/en/20/changelog/changelog_20.html#change-2.0.16 * Tue May 30 2023 daniel.garcia@suse.com - Switch documentation to be within the main package. * Sat May 20 2023 code@bnavigator.de - Update to 2.0.15 [#] orm * As more projects are using new-style “2.0” ORM querying, it’s becoming apparent that the conditional nature of “autoflush”, being based on whether or not the given statement refers to ORM entities, is becoming more of a key behavior. Up until now, the “ORM” flag for a statement has been loosely based around whether or not the statement returns rows that correspond to ORM entities or columns; the original purpose of the “ORM” flag was to enable ORM-entity fetching rules which apply post-processing to Core result sets as well as ORM loader strategies to the statement. For statements that don’t build on rows that contain ORM entities, the “ORM” flag was considered to be mostly unnecessary. * It still may be the case that “autoflush” would be better taking effect for all usage of Session.execute() and related methods, even for purely Core SQL constructs. However, this still could impact legacy cases where this is not expected and may be more of a 2.1 thing. For now however, the rules for the “ORM-flag” have been opened up so that a statement that includes ORM entities or attributes anywhere within, including in the WHERE / ORDER BY / GROUP BY clause alone, within scalar subqueries, etc. will enable this flag. This will cause “autoflush” to occur for such statements and also be visible via the ORMExecuteState.is_orm_statement event-level attribute. References: #9805 [#] postgresql * Repaired the base Uuid datatype for the PostgreSQL dialect to make full use of the PG-specific UUID dialect-specific datatype when “native_uuid” is selected, so that PG driver behaviors are included. This issue became apparent due to the insertmanyvalues improvement made as part of #9618, where in a similar manner as that of #9739, the asyncpg driver is very sensitive to datatype casts being present or not, and the PostgreSQL driver-specific native UUID datatype must be invoked when this generic type is used so that these casts take place. References: #9808 - Release 2.0.13 [#] orm * Modified the JoinedLoader implementation to use a simpler approach in one particular area where it previously used a cached structure that would be shared among threads. The rationale is to avoid a potential race condition which is suspected of being the cause of a particular crash that’s been reported multiple times. The cached structure in question is still ultimately “cached” via the compiled SQL cache, so a performance degradation is not anticipated. References: #9777 * Fixed regression where use of update() or delete() within a CTE construct, then used in a select(), would raise a CompileError as a result of ORM related rules for performing ORM-level update/delete statements. References: #9767 * Fixed issue in new ORM Annotated Declarative where using a ForeignKey (or other column-level constraint) inside of mapped_column() which is then copied out to models via pep-593 Annotated would apply duplicates of each constraint to the Column as produced in the target Table, leading to incorrect CREATE TABLE DDL as well as migration directives under Alembic. References: #9766 * Fixed issue where using additional relationship criteria with the joinedload() loader option, where the additional criteria itself contained correlated subqueries that referred to the joined entities and therefore also required “adaption” to aliased entities, would be excluded from this adaption, producing the wrong ON clause for the joinedload. References: #9779 [#] sql * Generalized the MSSQL try_cast() function into the sqlalchemy. import namespace so that it may be implemented by third party dialects as well. Within SQLAlchemy, the try_cast() function remains a SQL Server-only construct that will raise CompileError if used with backends that don’t support it. * try_cast() implements a CAST where un-castable conversions are returned as NULL, instead of raising an error. Theoretically, the construct could be implemented by third party dialects for Google BigQuery, DuckDB, and Snowflake, and possibly others. Pull request courtesy Nick Crews. References: #9752 * Fixed issue in values() construct where an internal compilation error would occur if the construct were used inside of a scalar subquery. References: #9772 [#] postgresql * Fixed apparently very old issue where the ENUM.create_type parameter, when set to its non-default of False, would not be propagated when the Column which it’s a part of were copied, as is common when using ORM Declarative mixins. References: #9773 [#] tests * Fixed test that relied on the sys.getsizeof() function to not run on pypy, where this function appears to have different behavior than it does on cpython. References: #9789 - PEP517 - Add missing runtime requirement * Sun May 14 2023 dmueller@suse.com - update to 2.0.13: * https://docs.sqlalchemy.org/en/20/changelog/changelog_20.html#change-2.0.13 * Fri May 12 2023 dmueller@suse.com - drop unnecessary mypy dependency * Thu May 04 2023 dmueller@suse.com - update to SQLalchemy 2.0.x: * 1.x remains available as SQLAlchemy1 Long list of changes, see https://docs.sqlalchemy.org/en/20/changelog/changelog_20.html#change-2.0.12 https://docs.sqlalchemy.org/en/20/changelog/changelog_20.html#change-2.0.11 https://docs.sqlalchemy.org/en/20/changelog/changelog_20.html#change-2.0.10 https://docs.sqlalchemy.org/en/20/changelog/changelog_20.html#change-2.0.9 https://docs.sqlalchemy.org/en/20/changelog/changelog_20.html#change-2.0.8 https://docs.sqlalchemy.org/en/20/changelog/changelog_20.html#change-2.0.7 https://docs.sqlalchemy.org/en/20/changelog/changelog_20.html#change-2.0.6 https://docs.sqlalchemy.org/en/20/changelog/changelog_20.html#change-2.0.5 https://docs.sqlalchemy.org/en/20/changelog/changelog_20.html#change-2.0.4 https://docs.sqlalchemy.org/en/20/changelog/changelog_20.html#change-2.0.3 https://docs.sqlalchemy.org/en/20/changelog/changelog_20.html#change-2.0.2 https://docs.sqlalchemy.org/en/20/changelog/changelog_20.html#change-2.0.1 * Fri Apr 21 2023 dmueller@suse.com - add sle15_python_module_pythons (jsc#PED-68) * Thu Apr 13 2023 mcepl@suse.com - Make calling of %{sle15modernpython} optional. * Wed Feb 15 2023 dmueller@suse.com - 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 dmueller@suse.com - update to 1.4.45: see https://docs.sqlalchemy.org/en/20/changelog/changelog_14.html#change-1.4.45 * Sat Oct 22 2022 arun@gmx.de - 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 dmueller@suse.com - 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 arun@gmx.de - 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 arun@gmx.de - 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 dmueller@suse.com - 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 dmueller@suse.com - 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 pgajdos@suse.com - python-mock is not required for build * Sun Apr 10 2022 arun@gmx.de - 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 arun@gmx.de - 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 arun@gmx.de - 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 mcepl@suse.com - 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 dmueller@suse.com - 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 dmueller@suse.com - 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 dmueller@suse.com - 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 dmueller@suse.com - 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 arun@gmx.de - 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 alarrosa@suse.com - 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 arun@gmx.de - 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 alarrosa@suse.com - Remove %ifpython2 (python2 flavor is disabled). - Do not use %if %{python_version_nodots} for BuildRequires. * Wed May 05 2021 alarrosa@suse.com - Remove broken %ifpython3 since the python2 flavor is disabled anyway. * Tue May 04 2021 alarrosa@suse.com - 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 alarrosa@suse.com - 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 alarrosa@suse.com - Update to 1.4.12 (bsc#1184038): * 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 * obsoletes sqlalchemy-7293b3dc0e9eb3dae84ffd831494b85355df8e73.patch in older dists - 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 mcepl@suse.com - 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 dmueller@suse.com - 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 jayvdb@gmail.com - Skip one failing test on Python 3.6 * Sat Dec 19 2020 dmueller@suse.com - 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 adrian@suse.de - 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 mcepl@suse.com - Replace pytest_depr_from_parent.patch with the upstream commit resolving same issue (gh#sqlalchemy/sqlalchemy#commit40cdb9c0bf4d). * Thu Oct 08 2020 mcepl@suse.com - Add pytest_depr_from_parent.patch to fix FTBGS with pytest 6.* (gh#sqlalchemy/sqlalchemy#5635) * Thu Aug 20 2020 mimi.vx@gmail.com - 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 arun@gmx.de - 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 arun@gmx.de - 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 arun@gmx.de - 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 dmueller@suse.com - 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 tchvatal@suse.com - Fix build without python2 * Sun Jan 26 2020 arun@gmx.de - 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 dmueller@suse.com - 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 arun@gmx.de - 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 tchvatal@suse.com - This package needs full fledged python on runtime so make sure we require it * Wed Oct 30 2019 tchvatal@suse.com - 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 arun@gmx.de - 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 arun@gmx.de - 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 toddrme2178@gmail.com - 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 arun@gmx.de - 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 arun@gmx.de - 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 arun@gmx.de - 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 arun@gmx.de - 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 arun@gmx.de - 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 tchvatal@suse.com - Add patch to fix test failure from upstream test.patch * Wed Mar 06 2019 tchvatal@suse.com - 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 jayvdb@gmail.com - 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 adrian@suse.de - version update to 1.2.17 https://docs.sqlalchemy.org/en/latest/changelog/changelog_12.html * Sat Feb 09 2019 adrian@suse.de - 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 mcepl@suse.com - Remove superfluous devel dependency for noarch package * Mon Nov 12 2018 arun@gmx.de - 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 arun@gmx.de - 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 arun@gmx.de - 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 arun@gmx.de - 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 arun@gmx.de - 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 arun@gmx.de - 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 mimi.vx@gmail.com - add upstream fix_test_reflection.patch to fix tests with new sqlite * Thu Jun 21 2018 hpj@urpla.net - 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 arun@gmx.de - 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 arun@gmx.de - 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 arun@gmx.de - 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 arun@gmx.de - 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 arun@gmx.de - 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 arun@gmx.de - 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 arun@gmx.de - 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 arun@gmx.de - specfile: * updated test requirements * Sun Dec 31 2017 arun@gmx.de - update to version 1.2.0: * See https://docs.sqlalchemy.org/en/latest/changelog/changelog_12.html * Mon Sep 25 2017 arun@gmx.de - 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 tbechtold@suse.com - update to 1.1.12: * See http://docs.sqlalchemy.org/en/latest/changelog/changelog_11.html#change-1.1.12 * Fri Jul 07 2017 tbechtold@suse.com - 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 toddrme2178@gmail.com - Don't provide python2-sqlalchemy, singlespec packages should use correct name. * Mon May 01 2017 toddrme2178@gmail.com - Add literal python-sqlalchemy provides. * Tue Apr 18 2017 toddrme2178@gmail.com - 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 toddrme2178@gmail.com - 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 dmueller@suse.com - fix source url * Fri Jun 03 2016 tbechtold@suse.com - 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 aplanas@suse.com - Add 0001-fix-sqlite3.10.0-test.patch Backport fix after SQLite3.10 upgrade * Mon Jan 11 2016 bwiedemann@suse.com - update to 1.0.11: * see http://docs.sqlalchemy.org/en/latest/changelog/changelog_10.html#change-1.0.11 * Sun Oct 04 2015 tbechtold@suse.com - update to 1.0.8: * see http://docs.sqlalchemy.org/en/latest/changelog/changelog_10.html#change-1.0.8 * Mon Jun 15 2015 bruno@ioda-net.ch - 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 bruno@ioda-net.ch - 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 tbechtold@suse.com - update to 0.9.9: + See http://docs.sqlalchemy.org/en/latest/changelog/changelog_09.html#change-0.9.9 * Thu Jan 08 2015 tbechtold@suse.com - 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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