SQL Interview Vault: 100 Real Questions with Expert Answers

SQL Interview Vault: 100 Real Questions with Expert Answers

🎯 Your ultimate SQL interview prep guide — real questions, real reasoning, real results.

Step confidently into your next SQL interview with 100+ real-world questions inspired by top companies like Amazon, Swiggy, and Flipkart.
This vault isn’t just a question bank — it’s a complete interview playbook that helps you think, solve, and explain like a true data professional.

📘 What’s Inside

🔹 Beginner-Level Questions (1–25)

• SELECT, WHERE, and ORDER BY fundamentals
• Aggregations and GROUP BY
• Basic JOINS and filtering logic

🔹 Intermediate-Level Questions (26–60)

• Subqueries and Common Table Expressions (CTEs)
• Complex JOINS and data manipulation
• Problem-solving with analytical thinking

🔹 Advanced-Level Questions (61–90)

• Window Functions and Ranking
• Conditional Logic (CASE WHEN)
• Query Optimization and Real-World Scenarios

🔹 Company-Style Case Challenges (91–100)

• Amazon: E-commerce sales analysis
• Swiggy: Customer order trends
• Flipkart: Performance and profitability insights

🧠 Plus Exclusive Interview Boosters

• Quick Revision Sheets — Your at-a-glance SQL refresher
• Essential SQL Clauses and Functions — A practical cheat sheet
• SQL Optimization Checklist — Write cleaner, faster queries
• Top 10 Common Mistakes to Avoid — Learn what interviewers really watch for
• Tips for Live SQL Rounds — Stay confident under pressure

💪 By the End of This Vault, You’ll Be Able To:

✅ Solve real-world SQL problems step-by-step
✅ Explain your logic confidently in interviews
✅ Handle live SQL rounds with ease and clarity
✅ Stand out as a data-savvy problem solver

🏁 Ready to Ace Your SQL Interviews?

This isn’t theory — it’s interview reality.
Master what companies actually ask, and walk in ready to win your next data role.

📦 Download the SQL Interview Vault now — your shortcut to SQL interview success.