SQL Pocket Guide: A Guide to SQL Usage: Zhao, Alice

The SQL Pocket Guide is a comprehensive and concise reference book that provides detailed explanations of SQL syntax, data types, and key aspects of database management systems.

With this book, you'll learn how to perform various tasks using SQL, including querying and making changes to a database.

The author describes how different database management systems implement SQL syntax, covering topics such as data conversions, regular expression syntax, window functions, pivoting, and unpivoting.

Additionally, the book includes new content on connecting Python and R to a relational database, as well as frequently asked SQL questions in the "How Do I?" chapter.

This updated edition is a must-have for data analysts, data scientists, and data engineers looking for an on-the-job reference.