SQL Interview Master Pack: 190 Questions

This is not your average SQL prep. It’s a deep-dive into the patterns, puzzles, and performance strategies that top-tier interviews demand — built for professionals transitioning to Data Engineering role or scaling their backend fluency.

🔍 Covers 10 advanced sections:

- Joins, filters, and date logic

- Subqueries, CTEs, and window functions

- Aggregations, grouping sets, and funnel breakdowns

- Performance tuning and query optimization

- Data modeling and system design

- ETL validation and automation

- Offbeat puzzles, recursive logic, and behavioral patterns

💡 Each question includes:

- Clean SQL syntax

- Strategic explanation

- Interviewer insights and edge-case handling

Whether you're debugging pipelines, designing schemas, or solving SQL riddles — this pack helps you think like a systems engineer and communicate like a data storyteller.