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# DBLift

> Flyway-style raw-SQL migrations for Python teams. No JVM, and you see the exact SQL before it runs. Open-source core under Apache 2.0 (https://github.com/dblift/dblift, https://pypi.org/project/dblift/). Pro adds SQL review and schema comparison; Enterprise adds offline plan, preflight rehearsal, and retained release evidence.

Install: pip install "dblift[postgresql]". Preview before applying: dblift migrate --dry-run --show-sql.

## Pages

- [Python Database Migration Tool, Open Source | DBLift](https://dblift.com/): Run SQL and Python migrations with pip. Preview SQL, track changes and undo with your own scripts. Start free with the Apache 2.0 core.
- [About DBLift](https://dblift.com/about/): About DBLift, an information technology software company building developer tools for Python-native database migrations, review, CI, and release workflows.
- [DBLift Blog](https://dblift.com/blog/): Comparisons and tutorials for Python database migrations, with real CLI output: Flyway, Alembic, MongoDB, getting started, SQL review, CI/CD, and release safety.
- [DBLift Compliance - Audit readiness for database change](https://dblift.com/compliance/): How DBLift maps schema history, SQL policy, schema comparison, offline plans, preflight evidence, and data audit ledgers to change-management and audit questions.
- [Contact DBLift](https://dblift.com/contact/): Contact DBLift for product questions, Pro and Enterprise evaluations, and database release workflow discussions. Email contact@dblift.com.
- [Install DBLift OSS](https://dblift.com/download/): Install DBLift OSS with pip driver extras for PostgreSQL, MySQL, Oracle, SQL Server, DuckDB, Cosmos DB, and more.
- [DBLift FAQ](https://dblift.com/faq/): Answers about DBLift: install and pip extras, the 20 supported engines, validate vs validate-sql, undo and rollback, CI gates, report formats, and how OSS, Pro, and Enterprise licences work.
- [SQL Migration Review and Schema Comparison | DBLift Pro](https://dblift.com/features/): SQL review, schema comparison and audited data fixes, on top of the free migration core.
- [Database Release Governance and Evidence | DBLift](https://dblift.com/governance/): Policy checks, offline plans, preflight rehearsal, data-path audit controls, and portable release evidence for Python teams.
- [DBLift Legal](https://dblift.com/legal/): DBLift publisher details, licensing notes, and legal information for OSS and commercial distributions.
- [Database Migration MCP Server for AI Agents | DBLift](https://dblift.com/mcp/): DBLift's MCP server lets Claude Code, Cursor, GitHub Copilot, and Windsurf call validate, diff, and preflight checks directly, in-process, with no LLM in the apply path.
- [DBLift Pricing - OSS, Pro, and Enterprise tiers](https://dblift.com/pricing/): Compare DBLift OSS (free, including undo), Pro (SQL, schema, and data review), and Enterprise (offline plan, preflight, policy packs, secrets, retained evidence) developer software tiers.
- [DBLift Privacy Policy](https://dblift.com/privacy/): Privacy information for the DBLift website and related product communications. Contact: contact@dblift.com.
- [DBLift Pro License Terms](https://dblift.com/pro-license/): Proprietary license for DBLift Pro: named seats, one organization key, licensed production-database capacity, CI use, term, and restrictions. OSS remains Apache 2.0.
- [DBLift Releases & Changelog | Python Database Migrations](https://dblift.com/releases/): What's new in each DBLift release: added features, CLI changes and fixes for the Python-native, Flyway-compatible SQL migration tool. Install with pip.
- [DBLift Report Examples](https://dblift.com/reports/): Sample HTML, JSON, SARIF, and CI outputs from SQL Review, offline plans, and preflight rehearsal for change records and audit stores.
- [DBLift Tutorials](https://dblift.com/tutorials/): Start with a free OSS migration, adopt an existing database, or add review and release controls when you need them.
- [Upgrade to DBLift Pro - Buy a Pro license](https://dblift.com/upgrade/): Buy a DBLift Pro license for SQL Review, Schema Comparison, Brownfield Import, Impact Analysis, and Audited Data Fixes. Instant license delivery after checkout.

## Blog

- [Add migrations to an existing database: baseline](https://dblift.com/blog/add-migrations-existing-database-baseline/): Add versioned SQL migrations to a PostgreSQL database that already has tables and data: check state, record a baseline, then apply only the next change.
- [Database engine coverage: DuckDB, PostgreSQL clouds, and analytics platforms](https://dblift.com/blog/database-engine-coverage/): How DBLift’s open core covers traditional RDBMS, DuckDB, PostgreSQL-compatible clouds, and related analytics targets — and which pip extras to install.
- [Database migration best practices for production teams](https://dblift.com/blog/database-migration-best-practices/): Keep migrations small, test rollbacks, establish baselines on existing schemas, and add plan/preflight evidence before high-risk production releases.
- [dblift speaks MCP](https://dblift.com/blog/dblift-mcp-server/): Claude Code, Cursor, and Copilot can now call DBLift directly — validate, diff, and preflight as tools, not shell commands the agent hopes it ran right.
- [DBLift vs Alembic: pick by how you write schema changes](https://dblift.com/blog/dblift-vs-alembic/): Looking for an Alembic alternative? Alembic diffs your models into Python revisions; DBLift runs the SQL you wrote, in version order. Where each one fits, with the two-heads merge case worked through.
- [Django raw SQL migrations next to the ORM: views, indexes, rollback](https://dblift.com/blog/django-raw-sql-migrations/): Keep Django's ORM migrations. Version the SQL it does not own, views, indexes, reference data, next to them with a manage.py check warning. Real output, one failure, one rollback.
- [Flyway for Python: migrate versioned SQL with DBLift](https://dblift.com/blog/flyway-for-python/): Using Flyway with Python? Compare the workflows, keep versioned SQL, import migration history into DBLift, and handle Java migrations before switching.
- [Python database migrations: a SQL and Python tutorial](https://dblift.com/blog/getting-started-with-dblift/): Learn Python database migrations with DBLift: version SQL and Python files, preview and apply changes on SQLite, validate checksums, and undo a migration.
- [MongoDB migrations in Python with DBLift](https://dblift.com/blog/mongodb-migrations-python/): Run MongoDB migrations in Python with DBLift and PyMongo: create indexes, backfill documents, track versions, and write an explicit undo with clear limits.
- [Database migration rollback in Python: dblift undo](https://dblift.com/blog/rollback-database-migration-python-undo/): Roll back SQL migrations in Python with undo files: see which versions are undoable, preview the exact SQL with a dry run, then undo to a target version.
- [SQL quality with DBLift: catch issues before production](https://dblift.com/blog/sql-quality-with-dblift-validation/): Use validate-sql for offline SQL policy checks, SARIF and GitHub Actions output, and team-specific rules before a database connection is required in CI.

## Documentation

- [DBLift Documentation](https://docs.dblift.com/): commands, 20 engines, framework guides, CI.
- [Documentation index for assistants](https://docs.dblift.com/llms.txt)

Contact: mailto:contact@dblift.com
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