Kim Berg Hansen: Practical Oracle SQL

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Cover: 9781484256169 | Practical Oracle SQL | Mastering the Full Power of Oracle Database

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Sprache: Englisch

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Beschreibung

Write powerful queries using as much of the feature-rich Oracle SQL language as possible, progressing beyond the simple queries of basic SQL as standardized in SQL-92.

Both standard SQL and Oracle¿s own extensions to the language have progressed far over the decades in terms of how much you can work with your data in a single, albeit sometimes complex, SQL statement. If you already know the basics of SQL, this book provides many examples of how to write even more advanced SQL to huge benefit in your applications, such as:

Pivoting rows to columns and columns to rows
Recursion in SQL with MODEL and WITH clauses
Answering Top-N questions
Forecasting with linear regressions

Row pattern matching to group or distribute rows
Using MATCH_RECOGNIZE as a row processing engine

The process of starting from simpler statements in SQL, and gradually working those statements stepwise into more complexstatements that deliver powerful results, is covered in each example. By trying out the recipes and examples for yourself, you will put together the building blocks into powerful SQL statements that will make your application run circles around your competitors.

What You Will Learn

Take full advantage of advanced and modern features in Oracle SQL

Recognize when modern SQL constructs can help create better applications
Improve SQL query building skills through stepwise refinement
Apply set-based thinking to process more data in fewer queries
Make cross-row calculations with analytic functions
Search for patterns across multiple rows using row pattern matching
Break complex calculations into smaller steps with subquery factoring

Who This Book Is For

Oracle Database developers who already knowsome SQL, but rarely use features of the language beyond the SQL-92 standard. And it is for developers who would like to apply the more modern features of Oracle SQL, but don¿t know where to start. The book also is for those who want to write increasingly complex queries in a stepwise and understandable manner. Experienced developers will use the book to develop more efficient queries using the advanced features of the Oracle SQL language.

Write powerful queries using as much of the feature-rich Oracle SQL language as possible, progressing beyond the simple queries of basic SQL as standardized in SQL-92.

What You Will Learn

Who This Book Is For

Über den Autor

¿Kim Berg Hansen is a database developer from Middelfart in Denmark. As a youngster he originally wanted to work with electronics, and he tried computer programming and discovered that the programs he wrote worked well-unlike the electronics projects he soldered that often failed. This led to a VIC-20 with 5 kilobytes RAM and many hours programming in Commodore Basic.

Having discovered his talent, Kim financed computer science studies at Odense University with a summer job as sheriff of Legoredo, while learning methodology and programming in Modula-2 and C. From there he moved into consulting as a developer making customizations to ERP software. That gave him his first introduction to Oracle SQL and PL/SQL, with which he has worked extensively since the year 2000.

His professional passion is to work with data inside the database utilizing the SQL language to the fullest to achieve the best application experience for his application users. With a background fitting programs into 5 KB RAM, Kim hates to waste computing resources unnecessarily.

Kim shares his experience and knowledge by blogging at the kibeha.dk website, presenting at various Oracle User Group conferences, and being the SQL quizmaster at the Oracle Dev Gym. His motivation comes from peers who say "now I understand" after his explanations, and from end users who "can't live without" his application coding. He is a certified Oracle OCE in SQL, and an Oracle ACE Director.

Outside the coding world, Kim is married, loves to cook, and is a card-carrying member of the Danish Beer Enthusiasts Association.

Zusammenfassung

Helps you learn SQL features that go beyond the SQL-92 standard and leverage Oracle to the fullest

Provides techniques that can be used as recipes and inspiration for solving business application tasks

Describes the stepwise thought process and evolution that are needed to build various bits of SQL into complete solutions to business problems

Inhaltsverzeichnis

Part I. Core SQL.- 1. Correlating Inline Views.- 2. Pitfalls of Set Operations.- 3. Divide and Conquer with Subquery Factoring.- 4. Tree Calculations with Recursion.- 5. Functions Defined Within SQL.- 6. Iterative Calculations with Multidimensional Data.- 7. Unpivoting Columns to Rows.- 8. Pivoting Rows to Columns.- 9. Splitting Delimited Text.- 10. Creating Delimited Text.- Part II. Analytic Functions.- 11. Analytic Partitions, Ordering and Windows.- 12. Answering Top-N Questions.- 13. Ordered Subsets with Rolling Sums.- 14. Analyzing Activity Logs with Lead.- 15. Forecasting with Linear Regression.- 16. Rolling Sums to Forecast Reaching Minimums.- Part III. Row Pattern Matching.- 17. Up and Down Patterns.- 18. Grouping Data Through Patterns.- 19. Merging Date Ranges.- 20. Finding Abnormal Peaks.- 21. Bin Fitting.- 22. Counting Children in Trees.

Details

Erscheinungsjahr:	2020
Genre:	Informatik
Rubrik:	Naturwissenschaften & Technik
Medium:	Taschenbuch
Seiten:	484
Inhalt:	xxiii 460 S. 72 s/w Illustr. 460 p. 72 illus.
ISBN-13:	9781484256169
ISBN-10:	1484256166
Sprache:	Englisch
Ausstattung / Beilage:	Paperback
Einband:	Kartoniert / Broschiert
Autor:	Berg Hansen, Kim
Auflage:	1st ed.
Hersteller:	Apress Apress L.P.
Maße:	254 x 178 x 27 mm
Von/Mit:	Kim Berg Hansen
Erscheinungsdatum:	20.02.2020
Gewicht:	0,902 kg

preigu-id: 117805232