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Full Description
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!
Contents
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
