An honest, experience-based comparison of PostgreSQL and MySQL for relational databases projects. We have shipped production systems with both — here is what we learned.
PostgreSQL vs MySQL — quick verdict: PostgreSQL is more feature-rich and better for complex queries. MySQL is simpler and faster for read-heavy workloads. Both are battle-tested, production-grade databases. ZTABS has shipped production systems with both PostgreSQL and MySQL. Below is our honest, experience-based comparison. Need help choosing? Get a free consultation →
4
PostgreSQL Wins
0
Ties
2
MySQL Wins
PostgreSQL
10/10
MySQL
7/10
PostgreSQL supports JSONB, full-text search, CTEs, window functions, custom types, materialized views, and extensions. MySQL's feature set is more limited but covers most use cases.
PostgreSQL
8/10
MySQL
9/10
MySQL is slightly faster for simple read-heavy workloads (SELECT queries). PostgreSQL catches up on complex queries and write-heavy workloads.
PostgreSQL
10/10
MySQL
7/10
PostgreSQL is the most SQL-standard-compliant database. MySQL takes liberties with SQL standards that can cause subtle bugs when migrating.
PostgreSQL
10/10
MySQL
6/10
PostgreSQL's JSONB type with GIN indexes makes it a viable document-relational hybrid. MySQL's JSON support exists but lacks the indexing and query capabilities.
PostgreSQL
8/10
MySQL
10/10
MySQL has the largest installed base and is the default for WordPress, Drupal, and most PHP applications. More hosting providers offer MySQL out of the box.
PostgreSQL
9/10
MySQL
8/10
PostgreSQL handles complex workloads at scale better with its query planner, parallel query execution, and partitioning. MySQL scales well for simpler read patterns.
PostgreSQL's JSONB, row-level security, and advanced features are ideal for multi-tenant SaaS.
MySQL is the default database for WordPress and most PHP frameworks.
PostgreSQL's window functions, CTEs, and materialized views are purpose-built for analytical queries.
MySQL's read performance and simpler setup make it efficient for straightforward API backends.
The best technology choice depends on your specific context: team skills, project timeline, scaling requirements, and budget. We have built production systems with both PostgreSQL and MySQL — talk to us before committing to a stack.
We do not believe in one-size-fits-all technology recommendations. Every project we take on starts with understanding the client's constraints and goals, then recommending the technology that minimizes risk and maximizes delivery speed.
Our senior architects have shipped 500+ projects with both technologies. Get a free consultation — we will recommend the best fit for your specific project.