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SQLAlchemy 2.0 migration causes silent data loss for 1.x users

By PulseAugur Editorial · [1 sources] ·

SQLAlchemy 2.0 has removed library-level autocommit, a change that can cause silent data loss for users migrating from 1.x. While 1.x code might appear to run without errors on SQLAlchemy 2.x, inserts may be rolled back instead of committed when connections close. The recommended approach for SQLAlchemy 2.x is to use `engine.begin()` for automatic commit/rollback or to manually call `conn.commit()` when using `engine.connect()`. AI

RANK_REASON The item discusses a specific technical issue and a solution related to a software library, fitting the 'tool' category.

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AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

SQLAlchemy 2.0 migration causes silent data loss for 1.x users

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COVERAGE [1]

  1. dev.to — MCP tag TIER_1 Português(PT) · ProvenPin ·

    SQLAlchemy 1.x code on 2.x: no error, no row

    <p>SQLAlchemy 2.0 removed library level autocommit. The <a href="https://docs.sqlalchemy.org/en/20/changelog/migration_20.html#library-level-but-not-driver-level-autocommit-removed-from-both-core-and-orm" rel="noopener noreferrer">migration guide</a> says it plainly: in 1.x, <cod…

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