Deep dives into SQL techniques, analytics insights, and industry best practices
Did you always think that the SELECT statement gets executed first? Learn the actual order of SQL query execution and how the interpreter optimizes your queries.
Companies like Amazon, Meta, and Google process billions of records daily. Learn optimization techniques including table partitioning to handle massive datasets efficiently.
Common Table Expressions are widely used but there's a prevalent misconception about their memory handling. Learn why CTEs can be inefficient in your queries.
When should you use window functions instead of GROUP BY? This comprehensive analysis compares performance, readability, and use cases with real-world examples.
Move beyond simple INNER and LEFT joins. Learn about self-joins, cross joins, and advanced join techniques that will make you a more efficient SQL developer.
Stop creating indexes randomly. Learn systematic approaches to index design, composite indexes, covering indexes, and when NOT to use indexes.