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)

Writing a psql script that exits on the first error

The default mode for the psql script tool is to continue processing when it finds an error. This sounds silly, but it exists for historical compatibility only. There are some easy and permanent ways to avoid this, so let's look at them.

Getting ready

Let's start with a simple script, with a command we know will fail:

$ $EDITOR test.sql

Execute the following script using psql to see what the results look like:

$ psql -f test.sql
psql:test.sql:1: ERROR:  syntax error at or near "mistake1"
LINE 1: mistake1;
psql:test.sql:2: ERROR:  syntax error at or near "mistake2"
LINE 1: mistake2;
psql:test.sql:3: ERROR:  syntax error at or near "mistake3"
LINE 1: mistake3;