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Gennick - SQL Pocket Guide

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Gennick SQL Pocket Guide

SQL Pocket Guide: summary, description and annotation

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If youre a programmer or database administrator who uses SQL in your day-to-day work, this popular pocket guide is the ideal on-the-job reference. It uses numerous examples to address the languages complexity, and covers key aspects of SQL used in Oracle, DB2, SQL Server, MySQL, and PostgreSQL. That includes the syntax for querying, managing transactions, and making changes to data, as well as SQL functions, type conversion functions and formats, and regular expression syntax.

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SQL Pocket Guide
Jonathan Gennick
Published by OReilly Media

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A Note Regarding Supplemental Files

Supplemental files and examples for this book can be found at http://examples.oreilly.com/0636920013471/. Please use a standard desktop web browser to access these files, as they may not be accessible from all ereader devices.

All code files or examples referenced in the book will be available online. For physical books that ship with an accompanying disc, whenever possible, weve posted all CD/DVD content. Note that while we provide as much of the media content as we are able via free download, we are sometimes limited by licensing restrictions. Please direct any questions or concerns to .

Chapter 1. SQL Pocket Guide
Introduction

This book is an attempt to cram the most useful information about SQL into a pocket-size guide. It covers commonly used syntax for the following platforms: IBM DB2 Release 9.7, MySQL 5.1, Oracle Database 11 g Release 2, PostgreSQL 9.0, and Microsoft SQL Server 2008 Release 2.

Not all syntax will work on all platforms, and some features may not be available in earlier releases of these products. Whenever possible, Ive tried to note any product or release dependencies.

Organization of This Book

Topics are organized alphabetically, with many section names carefully chosen to correspond to relevant SQL keywords. For example, see for help with the INSERT statement.

Platform notes

MySQL requires the leading parenthesis in a function invocation to immediately follow the function name. For example, upper (name) will generate an error message because of the space between upper and (name).

Conventions

The following typographical conventions are used in this book:

UPPERCASE

Indicates an SQL keyword

lowercase

Indicates a user-defined item in an SQL statement

Italic

Indicates emphasis or a new technical term

Constant width

Used for code examples and for in-text references to table names, column names, expressions, and so forth

Constant width bold

Indicates user input in input/output code examples

Constant width italic

Indicates an element of syntax you need to supply

[]

Denotes an optional element of syntax

{}

Denotes a required choice

|

Separates choices in syntax

Example Data

All example SQL statements in this book execute against a set of tables and data that you can download from this books catalog page at

The terms datum , zone , northing , and easting refer to Universal Transverse Mercator (UTM) grid coordinates, such as those you might use with a topographical map or GPS device. For more, see http://erg.usgs.gov/isb/pubs/factsheets/fs07701.html.

Figure 1-1 Example schema for this book Some SQL examples in this book use a - photo 2

Figure 1-1. Example schema for this book

Some SQL examples in this book use a pivot table, which is nothing more than a single-column table containing sequentially numbered rowsin this case, 1,000 rows. The name of the table is pivot. (Exceptions! In SQL Server, pivot is a reserved word, so the SQL Server example script creates the table as pivvot, with two v s. In the MySQL script, the table dual is named duel.)

Using Code Examples

This book is here to help you get your job done. In general, you may use the code in this book in your programs and documentation. You do not need to contact us for permission unless youre reproducing a significant portion of the code. For example, writing a program that uses several chunks of code from this book does not require permission. Selling or distributing a CD-ROM of examples from OReilly books does require permission. Answering a question by citing this book and quoting example code does not require permission. Incorporating a significant amount of example code from this book into your products documentation does require permission.

We appreciate, but do not require, attribution. An attribution usually includes the title, author, publisher, and ISBN. For example: SQL Pocket Guide , by Jonathan Gennick (OReilly). Copyright 2011 Jonathan Gennick, 9781449394097.

If you feel your use of code examples falls outside fair use or the permission given here, feel free to contact us at .

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Acknowledgments

My heartiest thanks to the following people for their support, encouragement, and assistance: Grant Allen; Don Bales; Vladimir Begun; Tugrul Bingol; John Blake; Michel Cadot; Dias Costa; Chris Date; Bruno Denuit; Doug Doole; Chris Eaton; Stphane Faroult; Iggy Fernandez; Bobby Fielding; Donna, Jenny, and Jeff Gennick; K. Gopalakrishnan; Jonah Harris; John Haydu; Kelvin Ho; Brand Hunt; Ken Jacobs; Chris Kempster; Stephen Lee; Peter Linsley; Jim Melton; Anthony Molinaro; Ari Mozes; Arup Nanda; Tanel Poder; Ted Rexstrew; Brandon Rich; Serge Rielau; Debby Russell; Andrew and Aaron Sears; Jeff Smith; Nuno Souto; Richard Swagerman; April Wells; and Fred Zemke.

Analytic Functions

Analytic function

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