Reladiff is a high-performance, open-source tool designed to diff large datasets across various databases. It reduces data transfer by performing diff calculations within the database, employing a divide-and-conquer algorithm for cross-database diffs and join operations for intra-database diffs. The tool is multi-threaded, configurable, and outputs JSON and git-like diffs for CI/CD integration. Reladiff supports over a dozen databases including MySQL, Postgres, and Snowflake, and is available on PyPI for easy installation.
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