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Mastering PostgreSQL 15 - Fifth Edition

You're reading from Mastering PostgreSQL 15 - Fifth Edition

Product type Book

Published in Jan 2023

Publisher Packt

ISBN-13 9781803248349

Pages 522 pages

Edition 5th Edition

Languages

Concepts

Robotic Process Automation

Author (1):

Hans-Jürgen Schönig

Table of Contents (16) Chapters

Preface

1. Chapter 1: PostgreSQL 15 Overview

2. Chapter 2: Understanding Transactions and Locking

3. Chapter 3: Making Use of Indexes

4. Chapter 4: Handling Advanced SQL

5. Chapter 5: Log Files and System Statistics

6. Chapter 6: Optimizing Queries for Good Performance

7. Chapter 7: Writing Stored Procedures

8. Chapter 8: Managing PostgreSQL Security

9. Chapter 9: Handling Backup and Recovery

10. Chapter 10: Making Sense of Backups and Replication

11. Chapter 11: Deciding on Useful Extensions

12. Chapter 12: Troubleshooting PostgreSQL

13. Chapter 13: Migrating to PostgreSQL

14. Index

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15. Other Books You May Enjoy

Exploring various stored procedure languages

As we’ve already stated in this chapter, PostgreSQL gives you the power to write functions and store procedures in various languages. The following options are available and are shipped along with the PostgreSQL core:

SQL
PL/pgSQL
PL/Perl and PL/PerlU
PL/Python
PL/Tcl and PL/TclU

SQL is the obvious choice for writing functions, and it should be used whenever possible, as it gives the most freedom to the optimizer. However, if you want to write slightly more complex code, PL/pgSQL might be the language of your choice.

PL/pgSQL offers flow control and much more. In this chapter, some of the more advanced and lesser-known features of PL/pgSQL will be shown, but do keep in mind that this chapter is not meant to be a complete tutorial on PL/pgSQL.

The core contains code to run server-side functions in Perl. Basically, the logic is the same here. Code will be passed as a string and executed by Perl....

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Authors (1)

Hans-Jürgen Schönig

Hans-Jürgen Schönig has 20 years' experience with PostgreSQL. He is the CEO of a PostgreSQL consulting and support company called CYBERTEC PostgreSQL International GmbH. It has successfully served countless customers around the globe. Before founding CYBERTEC PostgreSQL International GmbH in 2000, he worked as a database developer at a private research company that focused on the Austrian labor market, where he primarily worked on data mining and forecast models. He has also written several books about PostgreSQL.

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