SQL is the language of databases. It's used to create and maintain database objects, place data into those objects, query the data, modify the data, and, finally, delete data that is no longer needed. Databases lie at the heart of many, if not most business applications. Chances are very good that if you're involved with software development, you're using SQL to some degree. And if you're using SQL, you should own a good reference or two.

Now available in an updated second edition, our very popular SQL Pocket Guide is a major help to programmers, database administrators, and everyone who uses SQL in their day-to-day work. The SQL Pocket Guide is a concise reference to frequently used SQL statements and commonly used SQL functions. Not just an endless collection of syntax diagrams, this portable guide addresses the language's complexity head on and leads by example. The information in this edition has been updated to reflect the latest versions of the most commonly used SQL variants including:

Oracle Database 10g, Release 2 (includingthe free Oracle Database 10g Express Edition (XE))
Microsoft SQL Server 2005
MySQL 5
IBM DB2 8.2
PostreSQL 8.1 database

Informazioni sull?autore

Jonathan Gennick is an O'Reilly Media, Inc. editor specializing in database and programming titles. He writes extensively on database topics, and is the author of such successful books as: Oracle SQLPlus: The Definitive Guide, Oracle SQLPlus Pocket Reference, and Oracle SQL*Loader: The Definitive Guide. Jonathan contributes regularly to Oracle Magazine, and frequently explores interesting SQL topics on his own website, http://gennick.com. Jonathan is also a member of The Oak Table Network (http://www.oaktable.net), a group of Oracle experts known for their scientific approach to administering and developing Oracle based systems.

Jonathan got his start with relational database systems in 1990, first working with Ingres, and later with Digital's Rdb software. During that period he developed a fondness for SQL, and for the challenge of applying SQL creatively in ways that leveraged it's set-oriented capabilities.

In 1994 Jonathan made the leap to Oracle, and is now often found writing about it. Recent projects include Oracle SQLLoader (O'Reilly Media, Inc., 2001); Oracle SQLPlus Pocket Reference (O'Reilly Media, Inc., 2000); Oracle SQL*Plus: The Definitive Guide (O'Reilly Media, Inc., 1999); More recently, Jonathan has made forays into other database products, coauthoring Transact-SQL Cookbook (O'Reilly Media, Inc., 2002) and editing Practical PostgreSQL (O'Reilly Media, Inc., 2002).

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