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PostgreSQLvsMySQL

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

5
PostgreSQL wins
1
Ties
1
MySQL wins

Detailed comparison

JSON / JSONB support
PostgreSQL
Excellent — JSONB with indexing, operators, and full query support
MySQL
Basic — JSON column exists but querying is limited
Extension ecosystem
PostgreSQL
Exceptional — pgvector, PostGIS, TimescaleDB, pg_cron, and hundreds more
MySQL
Limited — fewer extensions, less active extension ecosystem
Full-text search
PostgreSQL
Built-in and powerful — tsvector, GIN indexes, ranking
MySQL
Available but less capable — often supplemented with Elasticsearch
Write performance
PostgreSQL
Excellent — though MySQL can edge it in simple INSERT-heavy workloads
MySQL
Slightly faster for simple, high-volume INSERT workloads
Replication
PostgreSQL
Logical and streaming replication — flexible and reliable
MySQL
Mature — Group Replication and InnoDB Cluster well-tested
Licence
PostgreSQL
PostgreSQL Licence — extremely permissive, no copyleft
MySQL
GPL — commercial use in SaaS requires careful licence review
Hosted options
PostgreSQL
Supabase, Neon, Railway, RDS, Cloud SQL, AlloyDB
MySQL
PlanetScale, RDS, Cloud SQL — solid but fewer modern options

Our verdict

We recommend: PostgreSQL

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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