Bump sqlalchemy from 1.4.52 to 2.0.45

[dependabot]

Bumps sqlalchemy from 1.4.52 to 2.0.45.

Release notes

Sourced from sqlalchemy's releases.

2.0.45

Released: December 9, 2025

orm

• [orm] [bug] Fixed issue where calling Mapper.add_property() within mapper event hooks such as MapperEvents.instrument_class(), MapperEvents.after_mapper_constructed(), or MapperEvents.before_mapper_configured() would raise an AttributeError because the mapper's internal property collections were not yet initialized. The Mapper.add_property() method now handles early-stage property additions correctly, allowing properties including column properties, deferred columns, and relationships to be added during mapper initialization events. Pull request courtesy G Allajmi.

  References: #12858

• [orm] [bug] Fixed issue in Python 3.14 where dataclass transformation would fail when a mapped class using MappedAsDataclass included a relationship() referencing a class that was not available at runtime (e.g., within a TYPE_CHECKING block). This occurred when using Python 3.14's PEP 649 deferred annotations feature, which is the default behavior without a from __future__ import annotations directive.

  References: #12952

examples

• [examples] [bug] Fixed the "short_selects" performance example where the cache was being used in all the examples, making it impossible to compare performance with and without the cache. Less important comparisons like "lambdas" and "baked queries" have been removed.

sql

• [sql] [bug] Some improvements to the _sql.ClauseElement.params() method to replace bound parameters in a query were made, however the ultimate issue in #12915 involving ORM _orm.aliased() cannot be fixed fully until 2.1, where the method is being rewritten to work without relying on Core cloned traversal.

  References: #12915

• [sql] [bug] Fixed issue where using the ColumnOperators.in_() operator with a nested CompoundSelect statement (e.g. an INTERSECT of UNION queries) would raise a NotImplementedError when the

... (truncated)

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[xiangfu0]

@dependabot rebase

[xiangfu0]

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[xiangfu0]

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[Copilot]

Pull request overview

This PR upgrades SQLAlchemy from version 1.4.52 to 2.0.45, implementing necessary API changes to maintain compatibility with SQLAlchemy 2.x. The upgrade includes updates to the dialect implementation and migration of deprecated APIs in example scripts.

Key changes:

• Updated SQLAlchemy version constraint from >=1.4,<2 to >=2.0,<3
• Modified dialect implementation to support SQLAlchemy 2.x initialization patterns
• Migrated example scripts from deprecated SQLAlchemy 1.x APIs to 2.x equivalents
• Removed Python 3.9 from CI test matrix

Reviewed changes

Copilot reviewed 10 out of 11 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
pyproject.toml	Updated SQLAlchemy version constraint to 2.x
pinotdb/sqlalchemy.py	Added SQLAlchemy 2.x compatibility methods and updated identifier preparer initialization
examples/pinot_quickstart_multi_stage.py	Fixed query endpoint URL
examples/pinot_quickstart_json_batch.py	Migrated to SQLAlchemy 2.x query APIs and connection patterns
examples/pinot_quickstart_hybrid.py	Migrated to SQLAlchemy 2.x query APIs and connection patterns
examples/pinot_quickstart_batch.py	Migrated to SQLAlchemy 2.x query APIs and connection patterns
examples/pinot_quickstart_auth_zk.py	Migrated to SQLAlchemy 2.x query APIs and connection patterns
examples/pinot_live.py	Migrated to SQLAlchemy 2.x query APIs and connection patterns
README.md	Updated documentation to reflect SQLAlchemy 2.x usage patterns
.github/workflows/pinot_dbapi_test.yml	Removed Python 3.9 from test matrix

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