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Structured Query Language, more commonly known as SQL, is seen as the standard for managing data kept in relational database management systems. A requirement to answer SQL interview questions forms part of many technical job roles, including:
- SQL Server Developer;
- Software Engineer;
- Business Systems Analyst;
- Senior Software Engineer;
- Senior SQL Database Administrator.
- Quality Assurance Tester;
- Web Developer;
- Systems Administrator;
- SQL Server Developer.
In preparation for any of the above job roles, we recommend you provide answers to the following SQL technical and non-technical interview questions:
Q1. Tell me about yourself and why you want this position?
Q2. What is SQL?
Q3. Why do you want to work for our company in this SQL position?
Q4. What is MySQL?
Q5. What’s the main difference between SQL and MySQL?
Q6. In SQL, what are ‘JOINS’?
Q7. What is an INDEX, and why is it useful to have?
Q8. What personality will you bring to the team?
Q9. If a ‘constraint’ is added in SQL, what does this mean?
Q10. What are the more common types of SQL constraint and what do they mean?
Q11. So far, you have referred to TABLES and FIELDS in your answers. What are they?
Q12. What’s your biggest weakness?
Q13. Tell me what the different subsets of SQL are?
Q14. It’s 5pm on a Friday and you receive a request from a stakeholder who says it’s urgent. You assess the task and it will take approximately one hour to complete. What would you do?
Q15. How would you format SQL server dates?
Q16. What is primary and foreign key?
Q17. Why do you want to leave your current job?
Q18. What is database denormalization?
Q19. What is database normalization?
Q20. What are your salary expectations in this SQL position?
Q21. In SQL, what is a subquery?
Q22. What happens to the data rows in a table when the table contains a clustered index?
Q23. That’s the end of your SQL interview. Do you have any questions for the panel?