Pick the book that best meets your need. For generic non-DBMS specific SQL, you'll want Sams Teach Yourself SQL In 10 Minutes. To learn MySQL or Microsoft SQL Server, you'll want the books specific to those DBMSs.

Sams Teach Yourself SQL In 10 Minutes Now in its 3rd edition, with over 1/4 million copies sold, and available in 10 languages, this is the best-selling introductory SQL book of all time! If you are just getting started with SQL, and are looking for the quickest path to success (not tied to any specific DBMS or SQL implementation), then this is the book you want.

MySQL Crash Course MySQL has become one of the most popular database management systems in the world. This book builds on the best-selling Sams Teach Yourself SQL in 10 Minutes, and provides more detailed coverage specific to MySQL. If you are new to MySQL, then this is the book you want.

Sams Teach Yourself Microsoft SQL Server T-SQL In 10 Minutes SQL Server is one of the most popular and important database management systems in the world. This book builds on the best-selling Sams Teach Yourself SQL in 10 Minutes, and provides more detailed coverage specific to Microsoft SQL Server and T-SQL. If you are new to SQL Server and T-SQL, then this is the book you want.