9780134858333

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The #1 Easy, Common-Sense Guide to SQL Queries—Updated with More Advanced Techniques and Solutions

Foreword by Keith W. Hare, Vice Chair, USA SQL Standards Committee

SQL Queries for Mere Mortals has earned worldwide praise as the clearest, simplest tutorial on writing effective queries with the latest SQL standards and database applications. Now, author John L. Viescas has updated this hands-on classic with even more advanced and valuable techniques.

Step by step, Viescas guides you through creating reliable queries for virtually any current SQL-based database. He demystifies all aspects of SQL query writing, from simple data selection and filtering to joining multiple tables and modifying sets of data.

Building on the basics, Viescas shows how to solve challenging real-world problems, including applying multiple complex conditions on one table, performing sophisticated logical evaluations, and using unlinked tables to think “outside the box.”

In two brand-new chapters, you learn how to perform complex calculations on groups for sophisticated reporting, and how to partition data into windows for more flexible aggregation.

Practice all you want with downloadable sample databases for today’s versions of Microsoft Office Access, Microsoft SQL Server, and the open source MySQL and PostgreSQL databases. Whether you’re a DBA, developer, user, or student, there’s no better way to master SQL.

Coverage includes:

Getting started: understanding what relational databases are, and ensuring that your database structures are sound
SQL basics: using SELECT statements, creating expressions, sorting information with ORDER BY, and filtering data using WHERE
Summarizing and grouping data with GROUP BY and HAVING clauses
Drawing data from multiple tables: using INNER JOIN, OUTER JOIN, and UNION operators, and working with subqueries
Modifying data sets with UPDATE, INSERT, and DELETE statements
Advanced queries: complex NOT and AND, conditions, if-then-else using CASE, unlinked tables, driver tables, and more
NEW! Using advanced GROUP BY keywords to create subtotals, roll-ups, and more
NEW! Applying window functions to answer more sophisticated questions, and gain deeper insight into your data

Software-Independent Approach!
If you work with database software such as Access, MS SQL Server, Oracle, DB2, MySQL, Ingres, or any other SQL-based program, this book could save you hours of time and aggravation—before you write a single query!

John L. Viescas is an independent database consultant with more than 50 years of experience. He began his career as a systems analyst, designing large database applications for IBM mainframe systems. He spent 6 years at Applied Data Research in Dallas, Texas, where he directed a staff of more than 30 people and was responsible for research, product development, and customer support of database products for IBM mainframe computers. While working at Applied Data Research, John completed a degree in business finance at the University of Texas at Dallas, graduating cum laude.

John joined Tandem Computers, Inc., in 1988, where he was responsible for the development and implementation of database marketing programs in Tandem’s U.S. Western Sales region. He developed and delivered technical seminars on Tandem’s relational database management system, NonStop SQL. John wrote his first book, A Quick Reference Guide to SQL (Microsoft Press, 1989), as a research project to document the similarities in the syntax among the ANSI-86 SQL standard, IBM’s DB2, Microsoft’s SQL Server, Oracle Corporation’s Oracle, and Tandem’s NonStop SQL. He wrote the first edition of Running Microsoft Access (Microsoft Press, 1992) while on sabbatical from Tandem. He has since written four editions of Running, three editions of Microsoft Office Access Inside Out (Microsoft Press, 2003, 2007, and 2010—the successor to the Running series), Building Microsoft Access Applications (Microsoft Press, 2005), and Effective SQL (Addison-Wesley, 2017).

John formed his own company in 1993. He provides information systems management consulting for a variety of small to large businesses around the world, with a specialty in the Microsoft Access and SQL Server database management products. He maintains offices in Nashua, New Hampshire, and Paris, France. He was recognized as a “Most Valuable Professional” (MVP) from 1993 to 2015 by Microsoft Product Support Services for his assistance with technical questions on public support forums. He set a landmark 20 consecutive years as an MVP in 2013.
You can visit John’s Web site at www.viescas.com or contact him by e-mail at john@viescas.com.

Part I: Relational Databases and SQL

Chapter 1: What Is Relational?
Chapter 2: Ensuring Your Database Structure Is Sound
Chapter 3: A Concise History of SQL

Part II: SQL Basics

Chapter 4: Creating a Simple Query
Chapter 5: Getting More Than Simple Columns
Chapter 6: Filtering Your Data

Part III: Working with Multiple Tables

Chapter 7: Thinking in Sets

Chapter 8: INNER JOINs
Chapter 9: OUTER JOINs
Chapter 10: UNIONs
Chapter 11: Subqueries

Part IV: Summarizing and Grouping Data

Chapter 12: Simple Totals

Chapter 13: Grouping Data
Chapter 14: Filtering Grouped Data

Part V: Modifying Sets of Data

Chapter 15: Updating Sets of Data
Chapter 16: Inserting Sets of Data
Chapter 17: Deleting Sets of Data

PART VI Introduction to Solving Tough Problems
Chapter 18 “NOT” And “AND” Problems
Chapter 19 Condition Testing
Chapter 20 Using Unlinked Data and “Driver” Tables
Chapter 21 Performing Complex Calculations on Groups
Chapter 22: More SQL Server Complex Problems to Solve

APPENDICES

Appendix A: SQL Standard Diagrams
Appendix B: Schema for the Sample Databases
Appendix C: Date and Time Functions
Appendix D: Suggested Reading

What is included with this book?

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SQL Queries for Mere Mortals A Hands-On Guide to Data Manipulation in SQL

SQL Queries for Mere Mortals A Hands-On Guide to Data Manipulation in SQL

0134858336

Summary

Author Biography

Table of Contents

Supplemental Materials