Data Science Educational Resources
StrataScratch is a data science educational platform with over 1,000+ real interview questions from your favorite companies.
SQL
Uber SQL Interview Questions
Breaking down the solution to one of the interesting Uber SQL interview questions
Irakli Tchigladze -
Illustrated Guide About Self Join in SQL
This illustrated guide will explain how self join in SQL works. We’ll do that on seven typical self join uses, complemented by real-world examples.
Nathan Rosidi -
What Is SQL GROUP BY and How to Use It?
The article discusses the seven most typical uses of SQL GROUP BY. We’ll go through its syntax and coding examples to give a taste of real-life SQL coding.Nathan Rosidi -
Learn to Use a Recursive CTE in SQL Query
A detailed tutorial on Recursive Common Table Expressions (CTE) in SQL. We’ll show you examples of how to use them and compare them with Non-Recursive CTEs.Nathan Rosidi -
Business Analyst Interview Questions
The ultimate guide for all the business analysts trying to choose the questions they should prepare for a job interview.Nathan Rosidi -
Amazon Data Science Interview Questions
In this article, we’ll solve one of the Amazon data science interview questions to show how to approach these questions the right way.Irakli Tchigladze -
Basic SQL Interview Questions
In this article, we will go over some basic SQL interview questions asked during the interviews and how to approach solving them easily.Nathan Rosidi -
Ranking in Python and SQL
In this article, we will explore the ranking parameters that can help you handle the ranking tasks in a more efficient and accurate manner.Nathan Rosidi -
Facebook (Meta) SQL Interview Questions
We’ll closely examine one of the interesting Facebook (Meta) SQL interview questions and find a flexible approach for solving this Data Science question.Nathan Rosidi -
Amazon Data Analyst Interview Questions
One of the interesting but difficult interview questions that Amazon recently asked for the data analyst position.Nathan Rosidi -
Advanced Data Analytics Interview Questions
In this article, we’ll answer several SQL, Python, and statistics advanced data analytics interview questions, so you get through the interview easier.Irakli Tchigladze -
Practicing String Manipulation in SQL
A detailed walkthrough of the solution for a Google interview question to practice SQL String Manipulation.Nathan Rosidi -