Book Image

PostgreSQL 11 Administration Cookbook

By : Simon Riggs, Gianni Ciolli, Sudheer Kumar Meesala
Book Image

PostgreSQL 11 Administration Cookbook

By: Simon Riggs, Gianni Ciolli, Sudheer Kumar Meesala

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 11 allows you to scale up your PostgreSQL infrastructure. This book takes a step-by-step, recipe-based approach to effective PostgreSQL administration. The book will introduce you to new features such as logical replication, native table partitioning, additional query parallelism, and much more to help you to understand and control, crash recovery and plan backups. You will learn how to tackle a variety of problems and pain points for any database administrator such as creating tables, managing views, improving performance, and securing your database. As you make steady progress, the book will draw attention to important topics such as monitoring roles, backup, and recovery of your PostgreSQL 11 database to help you understand roles and produce a summary of log files, ensuring high availability, concurrency, and replication. By the end of this book, you will have the necessary knowledge to manage your PostgreSQL 11 database efficiently.
Table of Contents (19 chapters)
Title Page
Copyright and Credits
About Packt

Handling objects with quoted names

PostgreSQL object names can contain spaces and mixed-case characters if we enclose the table names in double quotes. This can cause some difficulties, so this recipe is designed to help you if you get stuck with this kind of problem.

Case sensitivity issues can often be a problem for people more used to working with other database systems, such as MySQL, or for people who are facing the challenge of migrating code away from MySQL.

Getting ready

First, let's create a table that uses a quoted name with mixed cases, such as the following:


How to do it...

If we try to access these tables without the proper case, we get this error:

postgres=# SELECT count(*) FROM mycust;
ERROR:   relation "mycust" does not exist LINE 1: SELECT * FROM mycust;

So, we write it in the correct case:

postgres=# SELECT count(*) FROM MyCust;
ERROR:  relation "mycust" does not exist
LINE 1: SELECT * FROM mycust;

This still fails, and in fact gives the...