Optimization | SQLFlash

SQL Optimization Unlocked: Achieve 80% Calculation Reduction with CROSS APPLY

This SQL optimization case study shows how SARGable condition rewriting reduces query cost by 99.79% and execution time by 77.12%.

Rebooter.S

Jan 20, 2026

SARGable Condition Rewriting: Practical Solutions for Date Filtering Optimization

This SQL optimization case study shows how SARGable condition rewriting reduces query cost by 99.79% and execution time by 77.12%.

Rebooter.S

Jan 14, 2026

Optimize MySQL OR Conditions: Stop Using NOT EXISTS? Unveiling the Optimization Secrets of LEFT JOIN Anti-Join

This blog explores SQL optimization by comparing LEFT JOIN and NOT EXISTS for anti-joins, resulting in a 52.14% performance gain.

Rebooter.S

Jan 5, 2026

Database Industry Summary for 2025

Database industry in 2025 sees cloud-native, AI-native, and serverless trends, with market growth, security challenges, and evolving roles for professionals.

Rebooter.S

Jan 4, 2026

3 Surprising Ways SQLite Versions Differ

SQLite versions differ in features, speed, and compatibility. Find out which SQLite version best fits your project's needs and avoids common pitfalls.

SQLFlash

Dec 11, 2025

How to Troubleshoot and Fix Slow Queries in PostgreSQL

Identify and fix PostgreSQL slow query issues with proven steps for faster performance, better indexing, and optimized server settings.

SQLFlash

Dec 2, 2025

Step-by-Step Methods to Speed Up MySQL Slow Queries

Speed up MySQL slow query by using indexing, query rewriting, and monitoring tools for faster database performance and reduced latency.

SQLFlash

Dec 2, 2025

PostgreSQL 13 Has Reached EOL What Are the Consequences and Best Upgrade Practices

PostgreSQL EOL Upgrade is critical—avoid security, compliance, and stability risks by upgrading from PostgreSQL 13 with proven best practices.

SQLFlash

Nov 10, 2025

How to use the pg_vector plugin in PostgreSQL

Explore OLAP database architecture with columnar storage and vectorized engines. Learn SQL optimization, RAG with pg_vector, and boost query performance for data analytics.

SQLFlash

Nov 7, 2025

Why AI Integration Is the Future of Traditional Database Management

Traditional database ai integration boosts speed, data quality, security, and analytics, making database management smarter and more efficient.

SQLFlash

Sep 15, 2025