November 26
Choosing between a JOIN and a subquery is one of the most common points of confusion for SQL developers. Both approaches let you combine data from multiple tables, and often either one will work — but the right choice can improve clarity, performance, and maintainability.
November 26
Common Table Expressions (CTEs) are one of the most useful, least understood features in SQL. Beginners often think they’re “just subqueries with a nicer syntax,” but CTEs are far more powerful than that. This article gives the clearest explanation of what a CTE truly is.
I’ve spent over 20 years optimizing databases and designing rock-solid data systems. Now I’m sharing what I’ve learned to help others build faster, smarter, and more reliable platforms.
