Book Image

PostgreSQL 10 Administration Cookbook - Fourth Edition

By : Simon Riggs, Gianni Ciolli
Book Image

PostgreSQL 10 Administration Cookbook - Fourth Edition

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 10 allows users to scale up their PostgreSQL infrastructure. This book takes a step-by-step, recipe-based approach to effective PostgreSQL administration. Throughout this book, you will be introduced to these new features such as logical replication, native table partitioning, additional query parallelism, and much more. You will learn how to tackle a variety of problems that are basically the pain points for any database administrator - from creating tables to managing views, from improving performance to securing your database. More importantly, the book pays special attention to topics such as monitoring roles, backup, and recovery of your PostgreSQL 10 database, ensuring high availability, concurrency, and replication. By the end of this book, you will know everything you need to know to be the go-to PostgreSQL expert in your organization.
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 dumb, but it exists for historical compatibility only. There are some easy and mostly 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;