Using case study examples and hands-on exercises, van der Lans illuminates every key SQL concept, technique, and statement. Drawing on decades of experence as an SQL standards team member and enterise consultant, he reveals exactly why SQL works as it does, and how to get the most out of it. This fourth edition had been systematically updated to reflect the latest SQL standards and the newest versions of todays leading RDBMSs: Oracle, Microsoft SQL Server, DB2, and MySQL.