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Aikesheng Open Source Community
Aikesheng Open Source Community
May 28, 2025 · Databases

Analyzing and Optimizing Slow OceanBase SQL Queries Using TopSQL and Execution Plan Rewrites

This article investigates a slow OceanBase SQL query by examining CPU and TopSQL metrics, dissecting the execution plan, identifying batch join inefficiencies, rewriting the SQL for better performance, and demonstrating a reduction in execution time from over 2600 seconds to under one second.

Batch JoinOceanBaseSQL Optimization
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Analyzing and Optimizing Slow OceanBase SQL Queries Using TopSQL and Execution Plan Rewrites