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Learning PostgreSQL 10

You're reading from   Learning PostgreSQL 10 A beginner's guide to building high-performance PostgreSQL database solutions

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Product type Paperback
Published in Dec 2017
Publisher
ISBN-13 9781788392013
Length 488 pages
Edition 2nd Edition
Languages
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Authors (2):
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 Juba Juba
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Juba
 Volkov Volkov
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Volkov
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Table of Contents (23) Chapters Close

Title Page
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface
1. Relational Databases 2. PostgreSQL in Action FREE CHAPTER 3. PostgreSQL Basic Building Blocks 4. PostgreSQL Advanced Building Blocks 5. SQL Language 6. Advanced Query Writing 7. Server-Side Programming with PL/pgSQL 8. OLAP and Data Warehousing 9. Beyond Conventional Data Types 10. Transactions and Concurrency Control 11. PostgreSQL Security 12. The PostgreSQL Catalog 13. Optimizing Database Performance 14. Testing 15. Using PostgreSQL in Python Applications 16. Scalability

Summary


PostgreSQL provides a complete programming language called PL/pgSQL, which is integrated with the PostgreSQL trigger system. The PL/pgSQL and SQL languages can be used to code very complex logic. One should use the SQL functions when possible. With the introduction of advanced query writing techniques such as window functions and lateral Join in PostgreSQL, one can write very complex logic using only the standard SQL language.

There are several parameters in PostgreSQL for controlling function behavior; these parameters are applicable to the PL/pgSQL and SQL functions as well. For example, SECURITY DEFINER and SECURITY INVOKER define the execution security context and privileges. Function's planner parameters help the planner to generate execution plans. These parameters are COST, LEAKPROOF, and ROWS. Configuration related parameters can also be applied to functions. 

PL/pgSQL is a fully fledged language, there are statements for assignment, conditionals, iterations, and for exception...

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