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Mastering PostgreSQL 9.6

You're reading from Mastering PostgreSQL 9.6

Product type Book

Published in May 2017

Publisher

ISBN-13 9781783555352

Pages 416 pages

Edition 1st Edition

Languages

Concepts

Database Administration

Author (1):

Hans-Jürgen Schönig

Table of Contents (14) Chapters

Preface

1. PostgreSQL Overview

2. Understanding Transactions and Locking

3. Making Use of Indexes

4. Handling Advanced SQL

5. Log Files and System Statistics

6. Optimizing Queries for Good Performance

7. Writing Stored Procedures

8. Managing PostgreSQL Security

9. Handling Backup and Recovery

10. Making Sense of Backups and Replication

11. Deciding on Useful Extensions

12. Troubleshooting PostgreSQL

13. Migrating to PostgreSQL

Understanding various stored procedure languages

As already stated previously in this chapter, PostgreSQL gives you the power to write stored procedures in various languages. The following options are available and 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 to write stored procedures, 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. It offers flow control and a lot more. In this chapter, some of the more advanced and less known features of PL/pgSQL will be shown (this chapter is not meant to be a complete tutorial on PL/pgSQL).

Then the core contains code to run stored procedures in Perl. Basically, the logic is the same here. Code will be passed as a string and executed by Perl. Remember...

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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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