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database
Prisma Migration Failed - Schema Mismatch
Running `prisma migrate dev` fails with schema validation errors. The app can't sync with the database schema or migrations won't apply.
You see errors about 'Migration already applied', schema divergence, or the database being in a bad state preventing any migrations.
Error Messages You Might See
Error: P3005 - Database is in an inconsistent state
Error: P3007 - Some of the requested changes could not be executed
Migration validation error: Field constraint missing
Common Causes
- Uncommitted changes in migration history
- Database schema modified outside of Prisma (manual SQL)
- Migration file corrupted or contains invalid SQL
- Trying to add non-nullable column without default value
- Foreign key constraints preventing schema changes
How to Fix It
Check migration status: npx prisma migrate status
Reset database in development (careful!): npx prisma migrate reset
For new non-nullable fields, add with default: @default(uuid()) or @default(now())
Review migrations folder and ensure all files are valid SQL
Real developers can help you.
Basel Issmail
’m a Senior Full-Stack Developer and Tech Lead with experience designing and building scalable web platforms. I work across the full development lifecycle, from translating business requirements into technical architecture to delivering reliable production systems.
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Alvin Voo
I’ve watched the tech landscape evolve over the last decade—from the structured days of Java Server Pages to the current "wild west" of Agentic-driven development. While AI can "vibe" a frontend into existence, I specialize in the architecture that keeps it from collapsing.
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Anthony Akpan
Developer with 8 years of experience building softwares fro startups
Victor Denisov
Developer
Milan Surelia
Milan Surelia is a Mobile App Developer with 5+ years of experience crafting scalable, cross-platform apps at 7Span and Meticha. At 7Span, he engineers feature-rich Flutter apps with smooth performance and modern UI. As the Co-Founder of Meticha, he builds open-source tools and developer-focused products that solve real-world problems.
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🎯 Revamped the Vepaar app into Vepaar Store & CRM with a 2x performance boost and smoother UX.
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Hi Im a full stack developer, a vibe coded MVP to Market ready product, I'm here to help
Stanislav Prigodich
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I build and fix web apps across Next.js, Node.js, and DBs.
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Dor Yaloz
SW engineer with 6+ years of experience,
I worked with React/Node/Python
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Supabase expert
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Get HelpFrequently Asked Questions
Is it safe to reset the database in production?
NEVER use prisma migrate reset in production. Use npx prisma migrate deploy instead
How do I add a column without losing data?
Add column with @db.String? (nullable), then update existing records, then make non-nullable
What if a migration is stuck?
Check prisma_migrations table in database. Manually mark it as resolved if data is correct: UPDATE _prisma_migrations SET finished_at = NOW()