Mastering the SQL Analytical Toolkit

As a budding data professional, I recently completed an intensive SQL Week 2 Assignment that pushed me from basic queries into more powerful territory. I worked with two real-world databases — nairobi_academy (school management) and city_hospital (healthcare appointments). In this article, I’ll walk you through the key concepts I practiced, share practical queries, and explain why these skills matter in real jobs. Why This Matters Modern data roles don’t just require SELECT * FROM table . You ne