CTEs, Subqueries, and Query Optimisation in SQL

1. 1Identify slow-running queries using EXPLAIN and ANALYZE statements
2. 2Rewrite subqueries as joins or Common Table Expressions (CTEs) for better performance
3. 3Apply indexing to frequently filtered columns to speed up query execution
4. 4Use query optimization techniques such as caching and materialized views to reduce computation overhead
5. 5Test and compare the performance of optimized queries using benchmarking tools

Database administrators, data analysts, and backend developers can benefit from learning query optimization techniques to improve database performance and reduce query execution time

💡 Proper use of CTEs, subqueries, and indexing can significantly improve SQL query performance

Optimize your SQL queries with CTEs, subqueries, and indexing!