I love that my 90 books on database architectures, performance tuning, and SQL have helped millions, so I am giving them away for FREE. They normally cost $199.00 a piece.

You can now download my books on Snowflake, Databricks, Google BigQuery, Amazon Redshift, Synapse, Oracle, DB2, Yellowbrick, Vertica, MySQL, Postgres, and more.

Here is how you do it. Go to CoffingDW.com and click on Books from the top right menu. You will then be in the CoffingDW bookstore, where you will see the Snowflake book. Add the Snowflake book to your cart.

Add a book or many books you want to your cart.

When you check out, you use the coupon FRIEND2023.

You won’t have to enter any credit card information. Just put in your name and email, and the price will be discounted to zero. You can then download the book immediately at no cost to you.

The book is even watermarked with your name.

Enjoy the books, and keep in touch! Please let us know your thoughts. And feel free to share this coupon with your friends, family, and co-workers.

Thank you,


Tom Coffing
CEO, Coffing Data Warehousing
Phone: 513 300-0341
Email: Tom.Coffing@CoffingDW.com
Website: CoffingDW.com