
MySQL OR Condition to UNION ALL
This article demonstrates how optimizing MySQL OR conditions with UNION ALL significantly improves query performance, based on experimental results and execution plan analysis.
Rebooter.S
Read More
6 min

This article demonstrates how optimizing MySQL OR conditions with UNION ALL significantly improves query performance, based on experimental results and execution plan analysis.

This report compares MySQL TopN query optimizations using window functions, showcasing a two-order performance boost via CTE and LIMIT strategies with SQLFlash. Original 8-second queries optimized to 10ms through execution plan analysis and indexing strategies.