Cursor
database
Prisma Migration Fails After Schema Changes
After Cursor edited your Prisma schema, running migrations fails with errors. The schema changes can't be applied to the database.
The schema syntax may be invalid or incompatible with current data.
Error Messages You Might See
Invalid migration
Schema validation failed
Unique constraint violation
Field does not exist
Common Causes
- Invalid field types or model syntax in schema
- Relations incorrectly defined (missing @relation)
- Required field added without default to table with data
- Unique constraint added to column with duplicate values
- Enum values changed, conflicting with existing data
How to Fix It
Validate schema syntax in schema.prisma. Check Prisma docs for correct syntax. Create migration: npx prisma migrate dev. If fails, rollback: npx prisma migrate resolve --rolled-back [name]. Add defaults: String @default("default").
Real developers can help you.
Meïr Ankri
Full-stack developer specializing in React / Next.js / Node.js with 6+ years of experience. I've worked across various sectors including automotive (Reezocar/Société Générale), healthcare (Medical Link SaaS), and e-commerce (Glasman). I build web apps end-to-end, from architecture to production, with a focus on scalability, performance, and code quality. I also mentor junior developers and contribute to technical decisions and code reviews.
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.
I particularly enjoy building mobile apps, modern web platforms, and solving complex technical problems in a way that keeps systems clean, reliable, and easy to maintain.
Mehdi Ben Haddou
- Founder of Chessigma (1M+ users) & many small projects
- ex Founding Engineer @Uplane (YC F25)
- ex Software Engineer @Amazon and @Booking.com
Matthew Butler
Systems Development Engineer @ Amazon Web Services
Costea Adrian
Embedded Engineer specilizing in perception systems. Latest project was a adas camera calibration system.
Franck Plazanet
I am a Strategic Engineering Leader with over 8 years of experience building high-availability enterprise systems and scaling high-performing technical teams. My focus is on bridging the gap between complex technology and business growth.
Core Expertise:
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Vlad Temian
15+ years shipping production infrastructure for startups. Former CTO at qed.builders (acquired by The Sandbox).
Cursor ambassador and agentic tooling builder.
I've scaled systems, automated deployments, and built observability tools for AI coding workflows. I specialize in taking vibe-coded apps from broken prototype to production-ready: fixing Supabase auth/RLS, Stripe integrations, deployment pipelines, and cleaning up AI-generated spaghetti.
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Rudra Bhikadiya
I build and fix web apps across Next.js, Node.js, and DBs.
Comfortable jumping into messy code, broken APIs, and mysterious bugs.
If your project works in theory but not in reality, I help close that gap.
David Olverson
Solo dev shipping production apps with AI-assisted development. I specialize in rescuing broken Lovable/Bolt/Cursor builds and taking them to production. 10+ apps shipped including SaaS CRMs, gaming platforms, real estate tools, and Discord bots. Stack: Next.js 16, TypeScript, Tailwind CSS, FastAPI, PostgreSQL, Prisma. I use Claude Code with 50+ custom skills for rapid delivery. Average turnaround: 2-4 weeks from broken prototype to production.
Omar Faruk
As a Product Engineer at Klasio, I contributed to end-to-end product development, focusing on scalability, performance, and user experience.
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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 add a required field to existing table?
Add @default() or @updatedAt. Prisma will backfill existing rows. Then make it required in next migration.
Can I modify existing migrations?
No. Create new migration for changes. To redo, reset: npx prisma migrate reset (dev only).