Query Optimization | SQLFlash

Tag: Query Optimization

9 posts
MySQL OR Condition to UNION ALL

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
5 Steps to Optimize MySQL Deep Pagination

5 Steps to Optimize MySQL Deep Pagination

This article explores MySQL deep pagination optimization using Deferred Join technique, demonstrating 80.3% faster query performance with 99.99% fewer back-to-table operations through comprehensive testing.

Rebooter.S
Which PostgreSQL Version Should You Choose? A DBA's Guide

Which PostgreSQL Version Should You Choose? A DBA's Guide

Master PostgreSQL version management with 2025's latest insights. Discover critical EOL timelines for versions 14-16, compare upgrade methods like pg_upgrade vs logical replication, and learn how SQLFlash automates SQL tuning to reduce manual optimization efforts by 90% while maintaining compliance.

SQLFlash