Book Image

Mastering PostgreSQL 9.6

By : Hans-Jürgen Schönig
Book Image

Mastering PostgreSQL 9.6

By: Hans-Jürgen Schönig

Overview of this book

PostgreSQL is an open source database used for handling large datasets (Big Data) and as a JSON document database. It also has applications in the software and web domains. This book will enable you to build better PostgreSQL applications and administer databases more efficiently. We begin by explaining the advanced database design concepts in PostgreSQL 9.6, along with indexing and query optimization. You will also see how to work with event triggers and perform concurrent transactions and table partitioning, along with exploring SQL and server tuning. We will walk you through implementing advanced administrative tasks such as server maintenance and monitoring, replication, recovery and high availability, and much more. You will understand the common and not-so-common troubleshooting problems and how you can overcome them. By the end of this book, you will have an expert-level command of the advanced database functionalities and will be able to implement advanced administrative tasks with PostgreSQL.
Table of Contents (14 chapters)
Free Chapter
PostgreSQL Overview

Optimizing Queries for Good Performance

In previous chapters, you have learned how to read system statistics and how to make use of what PostgreSQL provides. Armed with this knowledge, this chapter is all about good query performance. You will learn more about the following topics:

  • Optimizer internals
  • Execution plans
  • Partitioning data
  • Enabling and disabling optimizer settings
  • Parameters for good query performance

At the end of the chapter, I hope that you will be able to write better and faster queries. And if your queries still happen to be bad, you should be able to understand why this is the case.