Linux Tech Enthusiast

Dec 25, 2025 · Databases

10 Advanced SQL Query Techniques Every Data Professional Should Master

This article presents ten advanced SQL concepts—including CTEs, recursive CTEs, temporary functions, CASE‑WHEN pivots, EXCEPT vs NOT IN, self‑joins, ranking window functions, delta calculations, cumulative sums, and date‑time manipulation—each explained with concrete examples and code snippets.