PostgreSQL vs MySQL 2026: Which Database Should You Choose?
The Short Answer
For new projects in 2026, choose PostgreSQL. It is more powerful, more standards-compliant, and handles complex queries better. MySQL is right when you specifically need MySQL-compatible tools or are joining an existing MySQL project.
Feature Comparison
| Feature | PostgreSQL | MySQL |
|---|
|---|---|---|
| JSON support | Native JSONB (indexed, queryable) | JSON type (limited) |
|---|---|---|
| CTEs with recursion | Yes | Yes (8.0+) |
| Materialized views | Yes | No |
| Extensions | pgvector, PostGIS, TimescaleDB | Plugin-based |
| Table inheritance | Yes | No |
| ACID compliance | Strict | Strict (InnoDB) |
PostgreSQL Wins For
Complex queries: Query planner is more sophisticated. Complex JOINs and window functions consistently execute faster.
JSON workloads: JSONB is indexed and fully queryable — hybrid relational + document database.
AI/Vector search: pgvector extension makes PostgreSQL a vector database — store embeddings alongside your data.
Extensions: The ecosystem is unmatched — geographic data (PostGIS), time-series (TimescaleDB), full-text search, vector search all in one database.
MySQL Wins For
Read-heavy web apps where you need maximum concurrent reads. Legacy PHP applications (WordPress, Drupal). Existing teams with deep MySQL expertise. When MySQL-specific tools in your stack require it.
Recommendation for 2026
Start with PostgreSQL for new projects. You get more features, better SQL compliance, and the pgvector extension for AI workloads. See the PostgreSQL Academy for fundamentals through advanced.
Found this useful? Share it:
Weekly DevOps & Cloud digest
Every Sunday — tutorials, interview questions, tips, and what changed in DevOps and Cloud this week.