Data Science Educational Resources
StrataScratch is a data science educational platform with over 1,000+ real interview questions from your favorite companies.
SQL
40+ Data Science Interview Questions From Top Companies
Overwhelming you with the data science interview questions is the only way to make sure your data science interview doesn’t end underwhelmingly.
Nathan Rosidi -
Data Analyst Interview Questions and Answers
In this article, we will discuss top data analyst interview questions and required skills from recent data analyst interviews at top companies.Nathan Rosidi -
The Ultimate Guide to SQL Window Functions
This ultimate guide is a complete overview of the types of SQL window functions, their syntax and real-life examples of how to use them in queries.Nathan Rosidi -
SQL CTEs: Usage, Advantages, and Drawbacks
All about SQL CTEs or Common Table Expressions, their types, and usage. We will also discuss the advantages and disadvantages of using them in your SQL queries.Nathan Rosidi -
How to Join 3 or More Tables in SQL
Here we’re going to talk about using a commonly required SQL concept - how to join 3 or more tables in SQL.Nathan Rosidi -
An Introduction to the SQL Rank Functions
This introduction covers two of the most common SQL Rank Functions, their differences, and how to use them.Nathan Rosidi -
The Ultimate Guide to SQL Aggregate Functions
Aggregate Functions in SQL is the main tool for data aggregation and one of the most common topics when working with data.Nathan Rosidi -
Introduction to IFNULL() Function in SQL
Learn all about the SQL IFNULL() function in MySQL and PostgreSQL with the example of a hard-level Interview Question asked by Google.Nathan Rosidi -
SQL Cheat Sheet – Technical Concepts for the Job Interview
This SQL cheat sheet gives you a concise and practical overview of the SQL concepts you’ll need for the job interview.Nathan Rosidi -
Top 30 SQL Query Interview Questions
Today we’re having a look at the top 30 SQL query interview questions and concepts that you must prepare for an SQL coding interview.Nathan Rosidi -
Data Science Coding Interview Questions with 5 Technical Concepts
Understanding 5 coding concepts of data science coding interview questions that companies will test you on and preparing for them effectively.Nathan Rosidi -
SQL Interview Questions You Must Prepare: The Ultimate Guide
This ultimate guide will take you through the top SQL interview questions for various data positions and tips to approach your next interview.Nathan Rosidi -