SQL Database Developer

This SQL mock interview mirrors real FAANG-style technical interviews. It emphasizes reasoning and tradeoffs over memorization, helping you practice how to think through SQL problems under pressure while explaining your choices clearly. The session adapts to your level: strong answers invite deeper follow-ups, while weaker ones get subtle hints or probing questions. Each exchange reflects how senior engineers run interviews, giving you practice with both fundamentals and advanced SQL. Key areas include query writing, joins, aggregations, subqueries, schema design, stored logic, data manipulation, and performance tuning. You’ll face layered questions that test not just syntax knowledge but also your ability to reason about tradeoffs, maintainability, and efficiency.

By the end of this mock interview, you will be able to:

• Demonstrate SQL fundamentals with queries, joins, and filtering.
• Apply aggregation, grouping, and window functions to practical scenarios.
• Work confidently with schema design, constraints, and stored procedures.
• Handle transactions, data loading, and ETL workflows.
• Optimize queries and explain indexing strategies clearly.

This isn’t just Q&A; it’s a rehearsal for real SQL interviews, building fluency and confidence.