Data Science Educational Resources

StrataScratch is a data science educational platform with over 1,000+ real interview questions from your favorite companies.

SQL Articles, Tutorials & Interview Questions

PayPal Interviews Companies SQL
PayPal Data Scientist Interview Questions
In this post we'll take a close look at one of the PayPal data scientist interview questions and discuss two different ways of solving this question using SQL.
Nathan Rosidi - November 1, 2022
SQL Interviews Facebook Companies
Facebook Interview Question Walkthrough - Popular Posts
Our series of interview question walk-throughs marches on! Today we’ll be dealing with the advanced Meta/Facebook SQL question.
Nathan Rosidi - October 21, 2022
SQL Interviews
SQL JOIN Interview Questions
This article covers the most common SQL JOIN interview questions, how to answer them, and what you need to know about JOINs to join the desired company.
Nathan Rosidi - October 13, 2022
Noom SQL Interviews Companies
Noom Data Analyst Interview Question
Noom helps you lose weight. We help you get a job at Noom. In today’s article, we’ll show you one of Noom’s hard SQL interview questions.
Nathan Rosidi - September 30, 2022
Interviews SQL Python System Design
Questions To Help You Practice For Your Data Science Interview
An overview of the types of questions in a Data Science interview along with the hands on practice using our platform.
Nathan Rosidi - September 24, 2022
DoorDash Interviews SQL Guides
DoorDash SQL Interview Questions
DoorDash SQL Interview Questions: delivery timing, order volumes, driver performance, and customer behavior
Sara Nobrega - September 14, 2022
Amazon Interviews SQL Companies
Amazon Business Analyst Interview Questions
Sharpen your skills of writing SQL queries to maximize your chances of getting a Business Analyst job at Amazon
Irakli Tchigladze - September 9, 2022
SQL Interviews
SQL Aggregate Functions Interview Questions
Let's take a deeper dive into the must-know SQL aggregate concepts for your next Data Science Interview.
Vivek Sankaran - September 2, 2022
SQL Interviews Amazon Companies
Amazon Data Engineer Interview Questions
Amazon Data Engineer interview questions that will specifically focus on the SQL coding skills relevant from a data engineering point of view.
Vivek Sankaran - August 31, 2022
SQL Interviews
SQL Window Functions Interview Questions
Here’s an article to help you answer the SQL interview questions that require knowledge of the SQL window functions.
Nathan Rosidi - August 26, 2022
Interviews SQL
Data Engineer Interview Questions
A blog for all the budding Data Engineers to understand some SQL interview questions with hands-on practice through the StrataScratch platform.
Nathan Rosidi - July 13, 2022
SQL Interviews
Assignment Solutions: Basic SQL 2
The explanations and solutions for answering the question in the Assignment: Basic SQL 2.
Nathan Rosidi - June 30, 2022