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python312-SQLAlchemy-2.0.28-1.2 RPM for riscv64

From OpenSuSE Ports Tumbleweed for riscv64

Name: python312-SQLAlchemy Distribution: openSUSE Tumbleweed
Version: 2.0.28 Vendor: openSUSE
Release: 1.2 Build date: Thu Mar 7 09:30:24 2024
Group: Unspecified Build host: reproducible
Size: 23426933 Source RPM: python-SQLAlchemy-2.0.28-1.2.src.rpm
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






* Thu Mar 07 2024 Adrian Schröter <>
  - update to 2.0.28:
* Sun Jan 21 2024 Dirk Müller <>
  - update to 2.0.25:
    * preliminary support for Python 3.12 pep-695 type alias
    * see
* Fri Dec 29 2023 Dirk Müller <>
  - update to 2.0.24:
* Mon Nov 27 2023 Dirk Müller <>
  - update to 2.0.23:
* Fri Sep 29 2023 Martin Schreiner <>
  - Update to 2.0.21:
    * Changes from 2.0.21:
    * Changes from 2.0.20:
  - Remove .gitignore files from source tree, removes all rpmlint
* Sun Aug 13 2023 Dirk Müller <>
  - use generic Cython >= 3 buildrequires
* Tue Jul 25 2023 Dirk Müller <>
  - update to 2.0.19:
    * Various bugfixes, see
* Mon Jun 19 2023 Dirk Müller <>
  - 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
* Tue May 30 2023 Daniel Garcia <>
  - Switch documentation to be within the main package.
* Sat May 20 2023 Ben Greiner <>
  - 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
      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 Dirk Müller <>
  - update to 2.0.13:
* Fri May 12 2023 Dirk Müller <>
  - drop unnecessary mypy dependency
* Thu May 04 2023 Dirk Müller <>
  - update to SQLalchemy 2.0.x:
    * 1.x remains available as SQLAlchemy1
    Long list of changes, see
* Fri Apr 21 2023 Dirk Müller <>
  - add sle15_python_module_pythons (jsc#PED-68)
* Thu Apr 13 2023 Matej Cepl <>
  - Make calling of %{sle15modernpython} optional.
* Wed Feb 15 2023 Dirk Müller <>
  - 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.
* Mon Jan 02 2023 Dirk Müller <>
  - update to 1.4.45:
* Sat Oct 22 2022 Arun Persaud <>
  - 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:
    * 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:
    * 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 Dirk Müller <>
  - 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 Persaud <>
  - 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 Persaud <>
  - 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:
      + [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:
    * 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:
    * 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 Dirk Müller <>
  - update to 1.4.37
    * details on
    * 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 Dirk Müller <>
  - update to 1.4.36:
    * details on
    * 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
  - python-mock is not required for build
* Sun Apr 10 2022 Arun Persaud <>
  - 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
      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
      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:
    * 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 Persaud <>
  - 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 Persaud <>
  - 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:
      + [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:
* Mon Dec 27 2021 Matej Cepl <>
  - Update to 1.4.29:
    - truly, just plenty of small bugfixes, see the changelog on the Web
* Sat Dec 18 2021 Dirk Müller <>
  - update to 1.4.28:
    Bugfixes, see
* Sun Dec 05 2021 Dirk Müller <>
  - update to 1.4.27:
    * see
* Wed Oct 27 2021 Dirk Müller <>
  - 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 Dirk Müller <>
  - 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:`` 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
    * 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(, 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(,`` 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
* Thu Jul 22 2021 Arun Persaud <>
  - 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
      + 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
      + 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 /
    * 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
    * 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
* Sun Jul 11 2021 Antonio Larrosa <>
  - 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.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 Persaud <>
  - 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
      + [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 Antonio Larrosa <>
  - Remove %ifpython2 (python2 flavor is disabled).
  - Do not use %if %{python_version_nodots} for BuildRequires.
* Wed May 05 2021 Antonio Larrosa <>
  - Remove broken %ifpython3 since the python2 flavor is disabled
* Tue May 04 2021 Antonio Larrosa <>
  - update to 1.4.13:
    * 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
    * 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
    * 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
    * 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 Antonio Larrosa <>
  - 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/ AssertionError
    [gw6] node down: Not properly terminated
* Fri Apr 30 2021 Antonio Larrosa <>
  - 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:
    * 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
    * 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
    - Enum and Boolean datatypes no longer default to "create
    * 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
    - 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
  - For the full list of changes in each revision in the 1.4 branch
    please read:
  - 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 Matej Cepl <>
  - 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 Dirk Müller <>
  - 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 John Vandenberg <>
  - Skip one failing test on Python 3.6



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Fabrice Bellet, Sat Jun 15 00:20:25 2024