News and Updates

SQLAlchemy 2.0.52 is now available.

This is a larger than usual maintenance release with fixes across the ORM, Core, and dialects. Items of note include:

• Python 3.15 support - Python 3.15 is now supported and tested.
• Literal execute processor audit - The test suite now exercises literal execute processors, used when bindparam(..., literal_execute=True) is given, across all datatypes and dialects to ensure string input is either rejected or correctly escaped. Fixes were made to SQL Server Uuid rendering, the PostgreSQL JSONPATH type, and the Float / Numeric family of types.
• ORM UPDATE with synchronize_session="fetch" - Fixed a result column misalignment where rows returned by .returning() could be delivered under incorrect keys, a problem most likely to appear under concurrent workloads.
• Wildcard loader options and pickling - Fixed failures unpickling ORM objects loaded with wildcard-based loader options such as load_only() or raiseload("*"), which could raise KeyError or IndexError when the unpickling process had not yet constructed a matching loader path. This is most likely to be seen with the forkserver multiprocessing start method, which became the default on POSIX platforms as of Python 3.14.

Links to the detailed changelog for 2.0.52 is at Changelog.

SQLAlchemy 2.0.52 is available on the Download Page.