Don't just learn "generic" SQL: learn SQL to get results with the world's top database platforms -- Oracle for the enterprise and Microsoft Access for the desktop! Based on John J. Patrick's hands-on SQL course at the University of California at Berkeley Extension, this book shows exactly how to retrieve the data you want, when you need it, in any application -- from ad hoc reports to the data warehouse. From the simplest Select statements to the most sophisticated joins, Patrick shows you exactly how to write SQL queries that are easy to understand, verify, modify, and extend.