GitHub user dosubot[bot] added a comment to the discussion: How can I downgrade the schema of superset from v4.0.0 to v3.0.0
<!-- Answer --> Downgrading the Superset schema from v4.0.0 to v3.0.0 is not officially supported and is highly risky. Many migrations in Superset are destructive (removing tables, columns, or features), and while some Alembic migration scripts include `downgrade()` functions, many are empty or only partially reverse changes. Attempting a downgrade can easily leave your database in an inconsistent or broken state, potentially causing data loss or application errors. The official documentation and changelogs do not provide any supported downgrade procedure and instead emphasize taking a full backup of your metadata database before any major upgrade as the only reliable way to revert to a previous schema version [[source]](https://github.com/apache/superset/blob/829e4d92d91ceae4b43b1ed3b063ffe45377799c/UPDATING.md) [[source]](https://github.com/apache/superset/wiki/Semantic-Versioning). If you need to revert to v3.0.0, the best practice is to restore your PostgreSQL RDS instance from a backup taken before the upgrade. This is the only safe and reliable method. Attempting to use Alembic to downgrade is not recommended and may result in unrecoverable issues. <!-- Dosu Comment Footer --> *To reply, just mention [@dosu](https://go.dosu.dev/dosubot).* --- <sup>How did I do? [Good](https://app.dosu.dev/response-feedback/54495342-7a38-498d-9b2d-f8872fa0dfd8?feedback_type=great_response) | [Irrelevant](https://app.dosu.dev/response-feedback/54495342-7a38-498d-9b2d-f8872fa0dfd8?feedback_type=irrelevant_answer) | [Incorrect](https://app.dosu.dev/response-feedback/54495342-7a38-498d-9b2d-f8872fa0dfd8?feedback_type=incorrect_sources) | [Verbose](https://app.dosu.dev/response-feedback/54495342-7a38-498d-9b2d-f8872fa0dfd8?feedback_type=too_verbose) | [Hallucination](https://app.dosu.dev/response-feedback/54495342-7a38-498d-9b2d-f8872fa0dfd8?feedback_type=hallucination) | [Report 🐛](https://app.dosu.dev/response-feedback/54495342-7a38-498d-9b2d-f8872fa0dfd8?feedback_type=bug_report) | [Other](https://app.dosu.dev/response-feedback/54495342-7a38-498d-9b2d-f8872fa0dfd8?feedback_type=other)</sup> [](https://app.dosu.dev/a28d3c7e-a9d3-459e-9fb6-3a6f9ff4f357/ask?utm_source=github)& nbsp;[](https://go.dosu.dev/discord-bot) [](https://twitter.com/intent/tweet?text=%40dosu_ai%20helped%20me%20solve%20this%20issue!&url=https%3A//github.com/apache/superset/discussions/34981) GitHub link: https://github.com/apache/superset/discussions/34981#discussioncomment-14282286 ---- This is an automatically sent email for [email protected]. To unsubscribe, please send an email to: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
