SQL for Data Analysis

SQL for Data Analysis is the next step after the basics: 20 visual cheat sheets that teach you how to use SQL to answer real business questions. Learn to clean messy data, track revenue trends month over month, build retention tables, find anomalies and analyze A/B tests. Every sheet shows the query, the real result table and a plain-English explanation, plus the most common mistake and how to fix it. Includes a practice database so you can run every query yourself. Instant digital access