PostgreSQL vs MySQL ComparisonThe two giants of open-source SQL — which one should back your application
MySQL powered the LAMP stack era and still runs much of the web. PostgreSQL grew from academia and has become the preferred database for complex applications, data teams, and modern cloud-native stacks. In 2025, PostgreSQL has pulled clearly ahead in developer surveys and new project adoption. MySQL remains widespread due to sheer historical inertia — it's the default in many shared hosts, and MariaDB forks are common in enterprise environments. For greenfield projects, Postgres is almost always the better choice.
Head-to-head summary
Detailed comparison
Our verdict
PostgreSQL is the better default for new projects. Its superior JSON support, extension ecosystem (pgvector, PostGIS, TimescaleDB), full ACID compliance, and more permissive licence make it the stronger foundation. Choose MySQL if you're inheriting an existing MySQL stack, using a platform that mandates it (e.g. some shared hosts), or need PlanetScale's branching workflow.
When to choose each
Choose PostgreSQL when:
- You're starting a new project — Postgres is the modern default
- You need JSON storage with real querying capability (not just blob storage)
- You need geospatial queries, vector search (pgvector), or time-series (TimescaleDB)
- You're using Supabase, Neon, Prisma, or Drizzle — all optimised for Postgres
Choose MySQL when:
- You're inheriting an existing MySQL or MariaDB database
- Your hosting environment mandates MySQL (some shared hosts, some legacy stacks)
- You want PlanetScale's branching workflow for schema migrations
- You're running a simple read-heavy web app where MySQL's defaults are fine
Frequently asked questions
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