SQL Mastery-The Complete Handbook

A complete, 97-page SQL handbook built for data analysts — from your very first SELECT statement to recursive CTEs, window functions, and query optimization. No fluff, no filler: every concept is taught with a real query, a real output, and the mistake people actually make with it.

What's inside:

1. Foundations through advanced SQL — data types, JOINs (all 6 types with diagrams), subqueries, CTEs, window functions, and query optimization
2. 170 interview questions across 5 difficulty tiers (Beginner → Optimization), each with a complete, ready-to-say answer
3. 5 end-to-end projects — compensation analysis, a revenue dashboard, customer segmentation, cohort retention, and a management hierarchy report — built on real datasets, not toy examples
4. A one-page cheat sheet condensing the entire book for last-minute review
5. One consistent dataset used throughout, so every technique builds on the last instead of resetting each chapter

Who it's for:

Aspiring and working data analysts preparing for interviews, anyone learning SQL from scratch, and analysts who know the basics but want to go from "I can write a SELECT" to "I can explain a recursive CTE and read an execution plan."

Format: Instant-download PDF, yours to keep forever.