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 parameters for particular groups of users

PostgreSQL supports a variety of ways of defining parameter settings for various user groups. This is very convenient, especially for managing user groups that have different requirements.

How to do it…

Follow these steps to set parameters at various levels as per the requirements:

  1. For all users in the saas database, use the following commands:
    ALTER DATABASE saas
    SET configuration_parameter = value1;
  2. For a user named simon connected to any database, use the following commands:
    ALTER ROLE simon
    SET configuration_parameter = value2;
  3. Alternatively, you can set a parameter for a user only when they're connected to a specific database, as follows:
    ALTER ROLE simon
    IN DATABASE saas
    SET configuration_parameter = value3;

The user won't know that these have been executed specifically for them. These are default settings, and in most cases, they can be overridden if the...