MySQL and PostgreSQL are both excellent free relational databases, so most apps would run fine on either. MySQL is simpler to set up, fast for common read-heavy web apps, and ubiquitous on shared hosting. PostgreSQL is more feature-rich, stricter about SQL standards, and stronger for complex queries, advanced data types, and correctness-sensitive work. The short answer: for a brand-new project in 2026, PostgreSQL is the safer default thanks to its features and rigor; choose MySQL when you want maximum simplicity, broad hosting support, or you already run it well. Here is the full comparison and a clear rule.
The core difference
Both speak SQL and store data in tables, but they prioritize different things. MySQL favors simplicity and speed for the most common patterns, and it has enormous ecosystem support. PostgreSQL favors correctness, extensibility, and rich features: advanced data types, powerful indexing, window functions, and strict adherence to the SQL standard. In practice, PostgreSQL tends to do more out of the box, while MySQL tends to be easier to get running and tune for straightforward apps.
A simple table works the same in both:
-- Works in MySQL and PostgreSQL
CREATE TABLE orders (
id SERIAL PRIMARY KEY,
total NUMERIC(10,2)
);
The differences appear in advanced features, not basic CRUD.
The comparison
| Factor |
MySQL |
PostgreSQL |
| Ease of setup |
Very easy |
Easy, slightly more involved |
| Standards compliance |
Good |
Excellent, strict |
| Advanced data types |
Limited |
Rich (JSONB, arrays, custom types) |
| Complex queries |
Capable |
Stronger (window functions, CTEs) |
| Read-heavy web apps |
Very fast, well-tuned |
Fast and reliable |
| Hosting availability |
Everywhere, including cheap hosts |
Widely available, growing |
| Common 2026 recommendation |
Solid, familiar choice |
Default for many new projects |
Both are open source, mature, and trusted in production.
Which should you choose?
- You are starting a new project with no constraints. Choose PostgreSQL. Its features and correctness make it the common default in 2026.
- You need complex queries, JSONB, or advanced types. PostgreSQL handles these more gracefully out of the box.
- You want the simplest possible setup or cheap shared hosting. MySQL is everywhere and trivial to provision.
- Your team already runs MySQL well. Stay with it. A working, understood database beats a migration for its own sake.
- You are a beginner learning SQL. Either is fine; the core SQL you learn transfers. See what an SQL query is.
- You value strict data integrity above all. PostgreSQL is generally the stricter, more standards-faithful choice.
What to skip
- Skip switching engines for raw speed. Indexing, schema design, and query quality matter far more than MySQL versus PostgreSQL.
- Skip overthinking it for a small app. Both comfortably handle typical workloads; pick one and build.
- Skip MySQL if you depend on advanced types like rich JSONB querying or custom types where PostgreSQL is stronger.
- Skip PostgreSQL if your only host supports MySQL and you cannot change it; the constraint outweighs the feature gap for simple apps.
FAQ
Is PostgreSQL better than MySQL?
For new projects, PostgreSQL is often the better default because of richer features and stricter standards. But MySQL is excellent for many apps, so "better" depends on your needs.
Is MySQL faster than PostgreSQL?
Each can be faster depending on the workload. MySQL is well tuned for read-heavy web apps; PostgreSQL excels at complex queries. Good indexing matters more than the engine.
Which should a beginner learn?
Either, since core SQL transfers. PostgreSQL is a strong modern default; MySQL is easier to host cheaply. Learn the SQL fundamentals first and the engine becomes secondary.
Can I migrate from MySQL to PostgreSQL later?
Yes, but it takes effort: data types, SQL dialect quirks, and tooling differ. Choosing well up front saves a migration, so pick deliberately.
Where to go next
See how MongoDB compares to MySQL, compare SQLite and Postgres, and learn what an SQL query is.