MaGe Linux Operations

Jul 29, 2021 · Databases

How to Efficiently Remove Duplicate Rows in Large MySQL Tables

This article explains why a naïve Python script for deduplicating millions of rows is too slow, then walks through a series of MySQL queries—including how to identify duplicate names, avoid the 1093 error, and delete duplicates while keeping a single representative row—demonstrating fast, reliable cleanup of large tables.