Does MySQL Work With Neon?
MySQL and Neon cannot be used together directly—Neon is a PostgreSQL-only platform and does not support MySQL as a database engine.
Quick Facts
How MySQL Works With Neon
Neon is built exclusively on PostgreSQL and provides no native support for MySQL databases. If you're running a MySQL-dependent application, you cannot deploy it to Neon without significant refactoring. The only viable approach would be to migrate your MySQL schema and queries to PostgreSQL-compatible syntax, which is a substantial undertaking involving schema translation, query rewriting, and application logic updates. Some tools like pgLoader can help automate migration of MySQL data to PostgreSQL, but this doesn't solve the fundamental incompatibility. Alternatively, you could run MySQL elsewhere (managed services like AWS RDS, PlanetScale, or self-hosted) while using Neon for other PostgreSQL workloads in your architecture. This polyglot approach adds operational complexity but allows you to leverage Neon's autoscaling and branching features where they're beneficial.
Best Use Cases
MySQL to PostgreSQL Connection Migration Example
npm install pg mysql2// Before: MySQL connection
const mysql = require('mysql2/promise');
const mysqlPool = mysql.createPool({
host: 'localhost',
user: 'root',
password: 'password',
database: 'myapp'
});
// After: Neon (PostgreSQL) connection
const { Pool } = require('pg');
const neonPool = new Pool({
connectionString: process.env.DATABASE_URL
// Neon connection string format:
// postgresql://user:password@ep-xxx.us-east-1.neon.tech/dbname
});
// Query adaptation example
// MySQL: SELECT * FROM users WHERE created_at > DATE_SUB(NOW(), INTERVAL 7 DAY);
// PostgreSQL: SELECT * FROM users WHERE created_at > NOW() - INTERVAL '7 days';
const result = await neonPool.query(
'SELECT * FROM users WHERE created_at > NOW() - INTERVAL \'7 days\''
);
console.log(result.rows);Known Issues & Gotchas
MySQL syntax is not compatible with PostgreSQL—stored procedures, triggers, and functions require rewriting
Fix: Use migration tools like pgLoader or AWS DMS, then audit and refactor application queries for PostgreSQL idioms
Data type differences (ENUM, JSON handling, auto-increment) can cause silent data corruption during migration
Fix: Thoroughly test schema translation in a staging environment and validate data integrity post-migration
MySQL's looser type coercion and transaction isolation defaults differ from PostgreSQL
Fix: Review application code for implicit type conversions and adjust transaction isolation levels if needed
Neon's free tier has storage/compute limits unsuitable for large MySQL databases
Fix: Plan for paid Neon tiers or consider hybrid deployments if your database is substantial
Alternatives
- •PostgreSQL with Neon + pgLoader for MySQL migration (recommended if you can switch databases)
- •MySQL with PlanetScale (serverless MySQL alternative with similar DX to Neon)
- •MySQL with AWS Aurora Serverless (AWS-native serverless relational database)
Resources
Related Compatibility Guides
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