Analicé qué instructores aparecen más en el Top 5 usando CTEs y DENSE_RANK. Respuesta paso a paso: sqlenvivo.com/respuesta-inst… #SQLTips #SQLPractice #DataSkills #QueryOptimization #DataProblems #SQL #answers

🔹 Window functions – calculating running totals, ranks, and group-level insights… while still keeping every single row visible! It’s amazing how these tools let you go from raw messy data → clean, powerful business insights in just a few lines. #SQLPractice #DataAnalytics