HackerRank isn’t just a random collection of problems; they’ve organized their SQL section pretty well. You can find ...

Abstract: A weighted-sum (WS) function computes the sum of selected integers. This paper considers a design method for WS functions by look-up table (LUT) cascades. In particular, it derives upper ...

Have you ever thought of the humble SUM function as a secret weapon for advanced analytics? Most Excel users see it as a basic tool for adding numbers, but what if I told you it could do so much more?

The SUM() function in SQL returns the total sum of a numeric column. It's commonly used to calculate totals in datasets like sales, quantities, or prices.

Wondering how to sum a column in Excel? This question has been asked by thousands of students around the world. Whether you’re a beginner or an experienced user, learning different ways to sum up a ...