Скачать или смотреть Day 24 of SQL | SQL Query Optimization in MySQL |15 Techniques to Boost Performance | 30 Days of SQL

Struggling with slow SQL queries? Don’t worry — in this video, I’ll explain 15 powerful SQL query optimization techniques that will help you write faster and more efficient queries in MySQL (and other databases).

We’ll cover:
✅ Indexing best practices
✅ Why you should avoid SELECT *
✅ Optimizing WHERE clauses
✅ Faster JOINs with indexes
✅ Using EXISTS vs IN
✅ Avoiding functions on indexed columns
✅ UNION vs UNION ALL
✅ Limiting result sets with LIMIT
✅ Choosing proper data types
✅ Replacing subqueries with joins
✅ Temporary tables for complex queries
✅ Optimizing GROUP BY & aggregates
✅ Analyzing queries with EXPLAIN
✅ Batch processing for bulk operations
✅ Regular database maintenance

By the end, you’ll know how to speed up SQL queries and make your applications run smoother 🚀

👉 Perfect for MySQL, PostgreSQL, SQL Server, and Oracle users.
👉 Great for beginners, developers, and data analysts preparing for interviews or improving performance in real projects.

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