Skip to content
All lessons

Tech Insights· foxhound.systems

Speeding up SQL queries by orders of magnitude using UNION:

From foxhound.systems

SQL's UNION operation isn't usually regarded as a way to optimize query performance, but in many cases it can be used to achieve massive improvements in speed.

Shared by Flavio Juvenal

Read on foxhound.systems
  • DB
  • Performance
  • PostgreSQL
  • SQL

Book a call

Lessons like this one
shape how we build.

Tell us what you’re building. In one call, we’ll show you how our team would approach it.

Tell us what you’re building, and we’ll show you how we’d approach it.

Still prefer the good old email? Contact us