Facebook's Most Common Data Science SQL Interview Question [2021 Interview Question and Answer]

This is the most common data science interview question from Facebook. It’s the most commonly tested concept on Facebook's coding interviews, especially in the beginning rounds. In the previous video, we talked about 5 coding concepts that companies test for in 2021 so now we'll actually solve the 5 questions that test your understanding of these concepts. If you haven't watched that video, here's the link to the video - https://bit.ly/3ek04by Link to the question: https://platform.stratascratch.com/coding/2005-share-of-active-users?python=&utm_source=youtube&utm_medium=click&utm_campaign=YT+description+link ______________________________________________________________________ 👉 Subscribe to my channel: https://bit.ly/2GsFxmA​​ 👉 Playlist for more data science interview questions and answers: https://bit.ly/3jifw81​​ 👉 Playlist for data science interview tips: https://bit.ly/2G5hNoJ​​ 👉 Practice more real data science interview questions: https://platform.stratascratch.com/coding?utm_source=youtube&utm_medium=click&utm_campaign=YT+description+link​​ ______________________________________________________________________ Timeline: Intro: (0:00​​) Interview Question: (0:50​​) Solution Approach: (1:50​​) Explore data: (2:28​​) Identify the required columns: (3:40​​) Visualize output: (4:14​​) Code in increments: (5:14​​) Conclusion: (10:16​​) ______________________________________________________________________ About The Platform: I'm using StrataScratch (https://platform.stratascratch.com/coding?utm_source=youtube&utm_medium=click&utm_campaign=YT+description+link​​), a platform that allows you to practice real data science interview questions. There are over 1000+ interview questions that cover coding (SQL and python), statistics, probability, product sense, and business cases. So, if you want more interview practice with real data science interview questions, visit https://platform.stratascratch.com/coding?utm_source=youtube&utm_medium=click&utm_campaign=YT+description+link​. All questions are free and you can even execute SQL and python code in the IDE, but if you want to check out the solutions from me or from other users, you can use ss15 for a 15% discount on the premium plans. ______________________________________________________________________ Contact: If you have any questions, comments, or feedback, please leave them here! Feel free to also email me at [email protected] ______________________________________________________________________ #SQL​ #DataScienceInterview