The first goal of this book is to provide the power user and database professional with SQL solutions to problems they face in the business working environment. To achieve this, the author uses his experience from the myriad of projects he participated in the last twenty years. He also follows user newsgroups where multiple business problems are posted. It is a pragmatic book that will show you how to calculate discounted sales volumes depending on revenue volumes, how to calculate employee commissions based on their sales, how to update multiple product prices from multiple suppliers conditionally, or how to find products with prices above the average product price. The book will not waste your time by repeating "in a beautified form" what is in the help file for administration and reference: it is intended to help you with your time, not waste it.The second goal of this book is to help people who want to learn SQL from the ground up. For this reason the author included in the beginning of each chapter simple but not simplistic theory so that the novice can be gradually introduced to the concepts of practical SQL and become an expert. If you need to teach SQL Server T-SQL in a class environment, you might want to consider the book "SQL Server T-SQL Comprehensive: version 2012" from the same author.