Step-by-step solutions to HackerRank's SQL questions, written for beginners. The goal isn't just "here's the query" — it's showing how to think through each problem so the logic actually clicks.

A verified record of skill assessments I've completed on HackerRank. Each certificate reflects a proctored, timed test of practical ability — not just a course completion badge — so this repo doubles ...

Crude oil inventories in the United States saw an increase of 900,000 barrels during the week ending September 25, according… Oil futures are financial contracts that allow participants to buy or sell ...

We use narrative tenses to talk about the past. We can use them to tell a story or to describe past events, including personal anecdotes. When we tell a story in the past, we often use linking words ...