If you use SQL in your day-to-day work as a data analyst, data scientist, or data engineer, this popular pocket guide is your ideal on-the-job reference. You'll find many examples that address the language's complexities, along with key aspects of SQL used in Microsoft SQL Server, MySQL, Oracle Database, PostgreSQL, and SQLite.

In this updated edition, author Alice Zhao describes how these database management systems implement SQL syntax for both querying and making changes to a database. You'll find details on data types and conversions, regular expression syntax, window functions, pivoting and unpivoting, and more.

Quickly look up how to perform specific tasks using SQL
Apply the book's syntax examples to your own queries
Update SQL queries to work in five different database management systems
NEW: Connect Python and R to a relational database
NEW: Look up frequently asked SQL questions in the "How Do I?" chapter

About the Author

Alice Zhao is a data scientist who is passionate about teaching and making complex things easy to understand. She has taught numerous courses in SQL, Python, and R as a senior data scientist at Metis and as a cofounder of Best Fit Analytics. Her highly rated technical tutorials on YouTube are known for being practical, entertaining, and visually engaging.

She writes about analytics and pop culture on her blog, A Dash of Data. Her work has been featured in Huffington Post, Thrillist, and Working Mother. She has spoken at a variety of conferences on topics ranging from natural language processing to data visualization. She has her MS in analytics and BS in electrical engineering, both from Northwestern University.

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