StrataScratch is a data science educational platform with over 1,000+ real interview questions from your favorite companies.
Finding the minimum in SQL is easy: just use the MIN() aggregate function. In this article, you will learn how to do it in different real-case scenarios.
What are the biases data scientists face in hiring? These biases are sneaky, so you should know how to handle them both as a candidate and a hiring manager.
What are Python hashmaps, what are the basic operations and advanced techniques, and how to use them in practice? We answer all that and more in this article.
ROW_NUMBER() is one of the essential ranking window functions in SQL. Learn where you can use it and how it works with ORDER BY and PARTITION BY window clauses.