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Top SQL Interview Questions Using Window Functions: Rolling Averages, Rankings, and More!
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🚀 Prepare for Your SQL Interviews with Confidence!
In this tutorial, we cover 5 SQL interview questions using powerful Window Functions. These questions are designed to help you ace your interviews and enhance your SQL skills.
💡 SQL Interview Questions Covered:
1️⃣ Compute the Rolling Average of Sales for the last three months.
2️⃣ Rank employees uniquely based on their Salaries in Descending Order.
3️⃣ Identify the Earliest and Latest Purchase Dates for each customer.
4️⃣ Find the Second Highest Salary in Each Department using DENSE_RANK().
5️⃣ Calculate the Percentage Contribution of each employee to the company’s total revenue.
👨💻 What You'll Learn:
How to create and populate tables for real-world interview scenarios.
Step-by-step explanation of SQL queries using RANK(), DENSE_RANK(), AVG(), and more.
Writing efficient queries to solve challenging interview problems. 🔥 This video is perfect for anyone preparing for SQL interviews or improving their database skills.
🔔 Don’t forget to Like, Subscribe, and Share for more SQL interview tips and tutorials!
#SQLInterviewQuestions #SQLWindowFunctions #SQLTutorial #RollingAverage #RankFunction #DenseRank #SecondHighestSalary #PurchaseDates #PercentageContribution #SQLQueries #DatabaseSkills #SQLForInterviews #LearnSQL #SQLTraining #dataanalytics
In this tutorial, we cover 5 SQL interview questions using powerful Window Functions. These questions are designed to help you ace your interviews and enhance your SQL skills.
💡 SQL Interview Questions Covered:
1️⃣ Compute the Rolling Average of Sales for the last three months.
2️⃣ Rank employees uniquely based on their Salaries in Descending Order.
3️⃣ Identify the Earliest and Latest Purchase Dates for each customer.
4️⃣ Find the Second Highest Salary in Each Department using DENSE_RANK().
5️⃣ Calculate the Percentage Contribution of each employee to the company’s total revenue.
👨💻 What You'll Learn:
How to create and populate tables for real-world interview scenarios.
Step-by-step explanation of SQL queries using RANK(), DENSE_RANK(), AVG(), and more.
Writing efficient queries to solve challenging interview problems. 🔥 This video is perfect for anyone preparing for SQL interviews or improving their database skills.
🔔 Don’t forget to Like, Subscribe, and Share for more SQL interview tips and tutorials!
#SQLInterviewQuestions #SQLWindowFunctions #SQLTutorial #RollingAverage #RankFunction #DenseRank #SecondHighestSalary #PurchaseDates #PercentageContribution #SQLQueries #DatabaseSkills #SQLForInterviews #LearnSQL #SQLTraining #dataanalytics
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