Aikesheng Open Source Community
May 15, 2020 · Databases
Estimating Progress of Large UPDATE Statements in MySQL Using Performance Schema
This article explains how to monitor and estimate the progress of a massive MySQL UPDATE by observing rows_examined in performance_schema, deriving a progress formula, and adjusting the coefficient based on whether primary keys or only data columns are modified.
Database OptimizationMySQLPerformance Schema
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