How to fix P5004: The feature is not yet implemented (Accelerate) in Prisma

First, determine which specific feature or query is causing the P5004 error:

1. Check your application logs for the exact query that fails
2. Look for patterns: Is it a specific model, relation, or query type?
3. Test the same query with a direct database connection (not through Accelerate)
4. Simplify your query to identify which part triggers the error

Example diagnostic approach:

// Test with direct connection first
const directPrisma = new PrismaClient({
  datasources: { db: { url: process.env.DIRECT_DATABASE_URL } }
});

// Test with Accelerate connection
const acceleratePrisma = new PrismaClient().$extends(withAccelerate());

// Run the same query with both connections to confirm

If the query works with direct connection but fails with Accelerate, you've found an Accelerate limitation.

Review the official Prisma Accelerate documentation to understand current limitations:

1. Visit the [Prisma Accelerate known limitations](https://www.prisma.io/docs/accelerate/known-limitations) page
2. Check the [Prisma Accelerate FAQ](https://www.prisma.io/docs/accelerate/faq) for feature support
3. Look at the [Prisma error reference](https://www.prisma.io/docs/orm/reference/error-reference) for P5xxx errors
4. Search the Prisma GitHub issues for similar reports

Common unsupported features in Accelerate include:
- Certain raw SQL operations
- Complex transaction patterns
- Specific database extensions
- Some relation query patterns
- Experimental Prisma features

Make sure you're not using any of these unsupported features.

If you've identified an unsupported feature, modify your query to work within Accelerate's limitations:

1. Break down complex queries: Instead of one complex query, use multiple simpler queries
2. Avoid raw SQL: Use Prisma's query builder instead of raw SQL when possible
3. Simplify relations: Break complex relation queries into separate queries
4. Use pagination: For large result sets, implement pagination
5. Avoid database-specific features: Stick to standard SQL features

Example: Instead of complex raw SQL:

// Problematic (might not be supported)
const result = await prisma.$queryRaw`
  SELECT * FROM users
  WHERE complex_condition(...)
  WITH RECURSIVE ...
`;

// Better approach (use Prisma's query builder)
const users = await prisma.user.findMany({
  where: { /* simpler conditions */ },
  take: 100,
  skip: 0
});

For operations that Accelerate doesn't support, consider using a direct database connection alongside Accelerate:

1. Set up both connections in your application:

import { PrismaClient } from '@prisma/client';
import { withAccelerate } from '@prisma/extension-accelerate';

// For most queries (cached, pooled)
const acceleratePrisma = new PrismaClient().$extends(withAccelerate());

// For unsupported operations (direct)
const directPrisma = new PrismaClient({
  datasources: { db: { url: process.env.DIRECT_DATABASE_URL } }
});

2. Use the appropriate client based on the operation:

// Use Accelerate for supported queries (caching benefits)
const cachedUsers = await acceleratePrisma.user.findMany({
  where: { active: true },
  cacheStrategy: { ttl: 60 }
});

// Use direct connection for unsupported operations
const rawResults = await directPrisma.$queryRaw`
  SELECT * FROM complex_analytics_view
`;

Important: Be careful with connection limits when using both connections.

Ensure your Prisma Client and Accelerate service versions are compatible:

1. Check your Prisma version:

npx prisma --version

2. Check Accelerate documentation for supported Prisma versions
3. Consider downgrading Prisma if you're using a very new version with unsupported features
4. Or wait for Accelerate to catch up with Prisma features

Update your dependencies if needed:

# Check for updates
npm outdated @prisma/client @prisma/extension-accelerate

# Update to latest compatible versions
npm update @prisma/client @prisma/extension-accelerate

Sometimes using an older, more stable Prisma version can avoid Accelerate compatibility issues.

If you need a specific feature that Accelerate doesn't support:

1. Check the Prisma roadmap: Visit [Prisma's public roadmap](https://github.com/prisma/prisma/issues) to see if your feature is planned
2. Create a feature request: Open an issue on the Prisma GitHub repository
3. Contact support: If you're on a paid plan, contact Prisma support
4. Join the community: Ask in the [Prisma Discord](https://pris.ly/discord) if others have workarounds

Example feature request format:
- Clearly describe the feature you need
- Provide a minimal reproduction case
- Explain your use case and why you need it
- Mention that it works with direct connection but not Accelerate

While waiting for feature implementation, you may need to:
- Use the direct connection workaround
- Re-architect your application to avoid the unsupported feature
- Consider alternative approaches to achieve the same result