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PostgreSQLvsMySQL
What is the difference between PostgreSQL and MySQL?
Updated 2 min read7 differences
In short
Both are open-source relational databases: PostgreSQL is known for advanced SQL, extensibility and strictness, MySQL for simplicity, speed and wide adoption.
PostgreSQL
PostgreSQL is a free, open-source relational database known for reliability, strict standards support and extensions, and widely used for web applications.
Read the page on PostgreSQLMySQL
MySQL is a popular open-source relational database queried with SQL, long known as the database behind WordPress and the classic LAMP web stack.
Read the page on MySQLPostgreSQL and MySQL compared
| Aspect | PostgreSQL | MySQL |
|---|---|---|
| Origins | Berkeley's Postgres project, 1986 | 1995; owned by Oracle since 2010 |
| Strengths | Advanced SQL, extensibility, correctness | Simplicity, speed for common web workloads |
| Data types | Very rich: JSONB, arrays, ranges, custom types | Standard types plus JSON |
| Extensions | PostGIS, pgvector and many more | Fewer; storage engines instead |
| Replication | Streaming and logical replication | Simple, widely used replication |
| Ecosystem | Popular with modern startups and data tools | WordPress, LAMP and many hosting providers |
| License | PostgreSQL License, permissive | GPL, with commercial editions |
The difference, explained
Both are free, mature relational databases that store data in tables, support ACID transactions and are offered as managed services by every major cloud. PostgreSQL grew out of the Postgres project at the University of California, Berkeley, started in 1986. MySQL appeared in 1995, became the M in the classic LAMP stack, and has been owned by Oracle since 2010; MariaDB is a community fork of it.
PostgreSQL emphasizes features and standards. It offers rich data types such as JSONB, arrays and ranges, advanced indexes, window functions and common table expressions, full-text search, and an extension system that adds geospatial data with PostGIS or vector search with pgvector. It has become the most used database in recent Stack Overflow developer surveys.
MySQL emphasizes simplicity and operational ease. With its default InnoDB engine it is fast for the simple reads and writes typical of web applications, replication is straightforward, and huge ecosystems such as WordPress and many hosting providers are built around it. Recent versions have added many features that once set PostgreSQL apart, such as window functions and CTEs.
A common misconception is that one is always faster. Performance depends on the workload, schema and tuning: MySQL often shines for simple, read-heavy queries, while PostgreSQL handles complex queries, heavy concurrent writes and analytics well. For new projects without special requirements, either is a solid choice.
Which one should you use?
Choose PostgreSQL when…
- You need complex queries, rich data types or JSON alongside relational data.
- You want extensions such as PostGIS or pgvector.
- Strict standards compliance and data integrity matter most.
Choose MySQL when…
- You run WordPress or software designed around MySQL.
- Your workload is mostly simple, read-heavy web queries.
- Your team and hosting already know MySQL well.
Readers ask
Is PostgreSQL better than MySQL?
Not universally. PostgreSQL has more advanced features and extensions; MySQL is simpler to run and extremely widespread. Both are reliable for production.
Which is faster, PostgreSQL or MySQL?
It depends on the workload. MySQL is often quicker for simple reads, while PostgreSQL usually does better with complex queries and heavy concurrent writes. Indexing and configuration matter more than the choice of database.
Can I switch from MySQL to PostgreSQL later?
Yes, with tools such as pgloader, but SQL dialect differences, data types and application queries need testing. Using an ORM makes the move easier.