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SQL Server Interview Questions
22 June, 2025
by Mohammed Azarudeen Bilal

SQL Server Interview Questions

During last Calendar Week, I've Conducted Various Polls on SQL Server Interview Questions on this LinkedIn Group "Big Data, Analytics, Business Intelligence & Visualization Experts Community" Answers for those polls intrigued me to end up wri ...

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Table of Contents

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  • Key Takeaways:
    • 1) The Rich History of Microsoft SQL
    • 2) T-SQL: The Heart of the SQL
    • Here are some key aspects of T-SQL to focus on:
      • Interactive Learning:
      • Exploring Beyond T-SQL:
    • 3) SQL Server Interview Questions and Answers for Beginners
      • 1. What Is SQL Server?
      • 2. How can you Differentiate the Editions of SQL Server?
      • 3. What Are the Main Components of SQL Server?
      • 4. What Is T-SQL? What Is the Difference Between SQL and T-SQL?
      • 5. What Are the Different Types of Joins in SQL Server?
      • 6. What Is the Purpose of the GROUP BY and HAVING Clauses in T-SQL?
      • 7. What Is a Subquery in T-SQL?
      • 8. What Are the Different Types of Subqueries?
      • 9. What Is the Difference Between UNION and UNION ALL?
      • 10. List the Most Common Functions in SQL Server.
        • String functions:
      • Numeric functions:
      • Date and time functions:
      • Aggregate functions:
      • Other functions:
      • 11. What Is the Purpose of the COALESCE() and NULLIF() Functions?
      • 12. What Are Window Functions in SQL Server?
      • 13. Find the Top N Rows in SQL Server.
      • 14. What Do ROLLUP, GROUPING SETS, and CUBE Do in T-SQL?
      • 15. What Is a CTE in SQL Server?
      • 16. Explain What a Recursive CTE Is and How to Write One in SQL Server.
    • 4) SQL Server Interview Questions and Answers For 5 Years of Experience
      • 17. How Do You Create a Table in SQL Server?
        • The syntax is as follows:
      • 18. What Is a Primary Key? What Is a Foreign Key?
      • 19. What Is the Difference Between DELETE and TRUNCATE Commands?
      • 20. What Is the Difference Between a Table and a View in SQL Server?
      • 21. Can You Explain the Different Types of Indexes in SQL Server?
        • These indexes are supported in SQL Server:
      • 22. What Is the Difference Between a Function and a Stored Procedure?
      • 23. What Is the Difference Between a Temporary Table and a Table Variable?
      • 24. What Is a Trigger? When Would You Use One?
      • 25. What Is the Difference Between Commit and Rollback?
    • 5) Advanced SQL Server Interview Questions
      • 26. Can You Explain the Different Types of Replication in SQL Server?
      • 27. Explain the Different Types of Locks in SQL Server.
        • Here are the lock modes in SQL Server:
      • 28. What Is the Difference Between a Deadlock and a Livelock?
      • 29. What Is the Difference Between a Materialized and a Non-Materialized View?
      • 30. What Is the Difference Between Implicit and Explicit Transactions?
        • When the implicit mode is activated, the keywords that trigger implicit transactions are:
→ Index