The Learning Log

Writing a query is one thing. Building a process that runs reliably without you is another — here's the full breakdown.

Joins, database design, data warehousing, and Snowflake SQL — wrapping up a full career track.

APIs, data cleaning, Git, ETL/ELT and Airflow — the next chapter after SQL.

A behind-the-scenes look at cleaning 100K+ e-commerce orders and finding the north-south logistics gap.

What the exam actually tests, and how it changed the way I think about dashboard design.

A deep dive into discount bands, margin erosion, and the danger of tracking revenue without profit.

Merchandising taught me more about data problems than I expected — here's the honest story of the transition.