Cursor
database
Database Migration Rollback Fails After Cursor Changes
After Cursor generated new database migration files, attempting to roll back to a previous version fails with syntax errors or constraint violations. The database is left in an inconsistent state.
The down migration (rollback) may be malformed or incompatible with the current schema.
Error Messages You Might See
ERROR: relation "table_name" does not exist
ERROR: constraint "fk_name" does not exist
ERROR: column "col_name" does not exist
Migration failed to rollback
Common Causes
- Down migration uses incorrect column names that don't match up migration
- Foreign key constraints prevent dropping columns in rollback
- Rollback migration missing proper error handling or transaction wrapping
- Index names or constraint names don't match between up and down
- Rollback attempts to drop non-existent columns or tables
How to Fix It
Verify down migrations are exact reverses of up migrations. Wrap in transactions: BEGIN; ... ROLLBACK;. Check column/index names match. Test rollback on development database first. Use DROP IF EXISTS for safety.
Real developers can help you.
Prakash Prajapati
I’m a Senior Python Developer specializing in building secure, scalable, and highly available systems. I work primarily with Python, Django, FastAPI, Docker, PostgreSQL, and modern AI tooling such as PydanticAI, focusing on clean architecture, strong design principles, and reliable DevOps practices. I enjoy solving complex engineering problems and designing systems that are maintainable, resilient, and built to scale.
Richard McSorley
Full-Stack Software Engineer with 8+ years building high-performance applications for enterprise clients. Shipped production systems at Walmart (4,000+ stores), Cigna (20M+ users), and Arkansas Blue Cross. 5 patents in retail/supply chain tech. Currently focused on AI integrations, automation tools, and TypeScript-first architectures.
AUXLE
I am a Full Stack Developer experienced in building Websites, Web apps and Cross Platform Mobile Apps for Startups and Companies.
hanson1014
Full-stack developer experienced in fixing and deploying AI-generated apps from Lovable, Bolt.new, Cursor, and Replit. I specialize in debugging Supabase integration issues (auth flows, RLS policies, database connections), fixing broken deployments, resolving routing/blank screen problems, and cleaning up messy React/Vite codebases. I also build production apps with the Claude API and have shipped a Mac desktop dev tool (Nexterm from scratch. Based in Hong Kong, fast turnaround.
Bastien Labelle
Full stack dev w/ 20+ years of experience
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Developer with 8 years of experience building softwares fro startups
zipking
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Tejas Chokhawala
Full-stack engineer with 5 years experience building production web apps using React, Next.js and TypeScript.
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Simon A.
I'm a backend developer building APIs, emulators, and interactive game systems. Professionally, I've developed Java/Spring reporting solutions, managed relational and NoSQL databases, and implemented CI/CD workflows.
Jen Jacobsen
I’m a Full-Stack Developer with over 10 years of experience building modern web and mobile applications. I enjoy working across the full product lifecycle — turning ideas into real, well-built products that are intuitive for users and scalable for businesses.
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You don't need to be technical. Just describe what's wrong and a verified developer will handle the rest.
Get HelpFrequently Asked Questions
How do I manually fix a failed migration?
Connect to DB and manually run the down migration SQL. Update migration table to mark migration as reverted.
Can I edit a migration after it's run?
No. Create a new migration to fix the issue. Never edit run migrations.