Book Image

PostgreSQL 14 Administration Cookbook

By : Simon Riggs, Gianni Ciolli
5 (1)
Book Image

PostgreSQL 14 Administration Cookbook

5 (1)
By: Simon Riggs, Gianni Ciolli

Overview of this book

PostgreSQL is a powerful, open-source database management system with an enviable reputation for high performance and stability. With many new features in its arsenal, PostgreSQL 14 allows you to scale up your PostgreSQL infrastructure. With this book, you'll take a step-by-step, recipe-based approach to effective PostgreSQL administration. This book will get you up and running with all the latest features of PostgreSQL 14 while helping you explore the entire database ecosystem. You’ll learn how to tackle a variety of problems and pain points you may face as a database administrator such as creating tables, managing views, improving performance, and securing your database. As you make progress, the book will draw attention to important topics such as monitoring roles, validating backups, regular maintenance, and recovery of your PostgreSQL 14 database. This will help you understand roles, ensuring high availability, concurrency, and replication. Along with updated recipes, this book touches upon important areas like using generated columns, TOAST compression, PostgreSQL on the cloud, and much more. By the end of this PostgreSQL book, you’ll have gained the knowledge you need to manage your PostgreSQL 14 database efficiently, both in the cloud and on-premise.
Table of Contents (14 chapters)

Setting the psql prompt with useful information

When you're connecting to multiple systems, it can be useful to configure your psql prompt so that it tells you what you are connected to.

To do this, we will edit the psql profile file so that we can execute commands when we first start psql. In the profile file, we will set values for two special variables, called PROMPT1 and PROMPT2, that control the command-line prompt.

Getting ready

Identify and edit the ~/.psqlrc file that will be executed when you start psql.

How to do it…

My psql prompt looks like this:

Figure 7.1 – The psql prompt set by ~./psqlrc

As you can see, it has a banner that highlights my employer's company name – I have this set for when we do demos. You can skip that part, or you can create some word art, being careful with backslashes since they are escape characters:

\echo '________ _____  _______'
\echo '| ______)...