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About

data-diff enables data professionals to detect differences in values between any two tables.​

It's fast, easy to use, and reliable. Even at massive scale.

Join us on GitHub if you'd like to contribute to this open source library!

How to use​

Diff Tables Between Databases​

Quickly identify issues when migrating data between databases​

Diff Tables Within Databases (available in pre release)​

Improve code reviews by identifying data problems you don't have tests for​

Here's a list of amazing things data-diff can do!​

  • ⇄ Verifies across many different databases (e.g., PostgreSQL ⇄ Snowflake) or within a database
  • 🔍 Outputs diff of rows in detail
  • 🚨 Simple CLI/API to create monitoring and alerts
  • 🔁 Bridges column types of different formats and levels of precision (e.g. Double ⇆ Float ⇆ Decimal)
  • 🔥 Verify 25M+ rows in <10s, and 1B+ rows in ~5min.
  • ♾️ Works for tables with 10s of billions of rows

Read more about our common use cases, or jump right in and install data-diff and run your first diff.