A repository dedicated to solving complex, real-world business problems across diverse sectors using Advanced SQL. Each case study translates raw data into actionable business insights through ...

One SQL topic that really improved my query writing was understanding the difference between CTEs and Subqueries. Both help break down complex queries, but they are useful in different situations.

Most candidates don’t lose interviews because of weak resumes. They lose them because their SQL isn’t strong enough. SQL looks basic at first. But in interviews, it quietly becomes a deal-breaker. If ...

SQL Business Analysis Project using Apple Retail Sales Dataset. Solved 50+ real-world SQL queries covering filtering, aggregations, joins, group by, date functions, CTEs, and window functions. Built ...

* The class will have meetings both on Zoom and in-person. Even when we are in-person, the class will be available via Zoom for students who choose to join virtually. For all Zoom links (class ...