Data Analyst Interview Questions and Answers | SQL Advanced Scenario Based Questions in 2026 скачать в хорошем качестве

Data Analyst Interview Questions and Answers | SQL Advanced Scenario Based Questions in 2026

Hey everyone, welcome back to the channel! If you're preparing for a Data Analyst interview, this video is going to be a game-changer for you. SQL is one of the most important skills for any data analyst role. Whether you're applying for product-based companies, startups, or MNCs, advanced SQL questions are almost always part of the technical round. Interviewers don’t just test basic SELECT statements anymore — they test your understanding of window functions, CTEs, ranking logic, performance optimization, and real business problem-solving. In today’s video, I’ll walk you through 10 advanced SQL interview questions that are commonly asked in real data analyst interviews. Make sure you watch till the end because the last few questions are frequently asked in top companies. I’ve also added a practice resource link in the description so you can try these questions yourself. If you find this video helpful, don’t forget to like, subscribe, and share it with your friends who are preparing for interviews. Let’s get started! Link for Practical File - https://traidev.com/download-resource... New drops are live! 🔥 Grab your favorite tees today at 👉 https://oridada.com/ 🥇 00:00 - Introduction to SQL Interview Questions And Answers 02:00 – Setup and Create Database using SQL file 05:30 – Q1. Repeat Purchase Customers Identify customers who made more than one purchase in the last 30 days. 12:08 – Q2. Daily Active Users (DAU) Calculate the number of unique users logging in each day for the last 7 days. 16:40 – Q3. Product Category Sales Contribution Find the percentage contribution of each category to total sales. 22:25 – Q4. First and Last Purchase Get each user's first and last order date. 28:10 – Q5. Churned Users Find users who signed up last year but didn’t place any orders this year. 33:00 – Q6. Sales Drop Detection Identify products with a 30% or more drop in sales compared to the previous month. 39:50 – Q7. 3 Consecutive Day Logins Find users who logged in for 3 consecutive calendar days. 43:30 – Q8. Average Items per Order Calculate the average number of items per order. 44:45 – Q9. Detect Outliers in Transactions Detect sales that are more than 2 standard deviations above the mean. 48:10 – Q10. 7-Day Moving Average of Sales Calculate the 7-day moving average of daily total sales. 🔥 Topics Covered GROUP BY & HAVING COUNT DISTINCT LEFT JOIN Subqueries Window Functions Date Filtering STDDEV & Moving Averages Real-world Business SQL Scenarios 🚀 Follow us on: Instagram:   / traidev   Linkedin:   / traidev   Instagram Personal:   / adroit.kanha   ╔═╦╗╔╦╗╔═╦═╦╦╦╦╗╔═╗ ║╚╣║║║╚╣╚╣╔╣╔╣║╚╣═╣ ╠╗║╚╝║║╠╗║╚╣║║║║║═╣ ╚═╩══╩═╩═╩═╩╝╚╩═╩═╝ 🥳 Join our Telegram Community: Telegram channel: https://t.me/traidevofficial Link for FILE PICKER API | Library https://pub.dev/packages/file_picker Download Source Code : Please build a community on Instagram. Follow me :   / traidev   App Download Play Store Link : https://bit.ly/2wkMeSX To get all the latest update video tutorials, I encourage to subscribe to this channel, and don't forget to share this video to your friends on your social networks. If you have any question, please comment below and I will try to answer as many as I can. Tags : #coding #Traidev Watch Full Video ... If you face any problem Feel free to ask If you like my video don't forget to like and subscribe my Channel Thankhyou ! If you learn Android Studio free 100% Subscribe my Channel. Channel Link:-    / traidev   ✅ Beginner to Advance Complete Java Course Playlist:    • Плейлист   ✅ Flutter Widgets Playlist :    • Flutter Playlist   ✅ Android Studio Playlist :    • Android Studio Tutorials for Beginners   ✅ HTML & CSS Full Playlist :    • HTML & CSS & Java Scripts Snipes   ✅ Subscribe:    / traidev   CONTACT For business inquiries email me here: traidevindia@gmail.com Website: https://traidev.com For Software Website App development inquiries email me here: traidevindia@gmail.com Website: https://traidev.com Link for Download App Download Play Store Link : https://bit.ly/2wkMeSX​​​​​​​​​ I Wish you like this video. Ask any Query on Instagram :   / traidev   Enjoy & Stay Connected With Us! ► Subscribe To Traidev Officials : https://bit.ly/Youtube-Traidev ► Like Us On Facebook : https://bit.ly/Facebook-Traidev ► Follow Us On Instagram : https://bit.ly/Instagram-Traidev ► Follow Us On Instagram Officials :   / traidev​​​​​​​​​   ====================================================== Thanks and Love #Traidev​​​​​​​​​​​​​​​​​​ LIKE | COMMENT | SHARE | SUBSCRIBE In this Video we Will Cover Further Topics :