Feature Requests

Could the team tackle a course on Subqueries? It is widely used in the industry along with Window Functions and CTE's? However, it's hard to find an extensive course on Subqueries. It's normally given a small section. It is also asked in most interviews when covering SQL.

I would like to see the courses on Data Storytelling. How can we improve the way of telling stories about data in a professional way?

Please consider adding more content around: Window Functions - ROW_NUMBER, RANK, DENSE_RANK Performance Tuning - index optimization, query rewriting, EXPLAIN plans Analytical functions like LEAD or LAG Understanding and managing NULL values