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Mastering PostgreSQL 15

Mastering PostgreSQL 15

By : Hans-Jürgen Schönig
4.9 (7)
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Mastering PostgreSQL 15

Mastering PostgreSQL 15

4.9 (7)
By: Hans-Jürgen Schönig

Overview of this book

Starting with an introduction to the newly released features of PostgreSQL 15, this updated fifth edition will help you get to grips with PostgreSQL administration and how to build dynamic database solutions for enterprise apps, including designing both physical and technical aspects of the system. You'll explore advanced PostgreSQL features, such as logical replication, database clusters, advanced indexing, and user management to manage and maintain your database. You'll then work with the PostgreSQL optimizer, configure PostgreSQL for high speed, and move from Oracle to PostgreSQL. Among the other skills that the book will help you build, you’ll cover transactions, handling recursions, working with JSON and JSONB data, and setting up a Patroni cluster. It will show you how to improve performance with query optimization. You'll also focus on managing network security and work with backups and replication while exploring useful PostgreSQL extensions that optimize the performance of large databases. By the end of this PostgreSQL book, you’ll be able to use your database to its utmost capacity by implementing advanced administrative tasks with ease.
Table of Contents (16 chapters)
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Adjusting parameters for good query performance

Writing good queries is the first step to achieving good performance. Without a good query, you will most likely suffer from bad performance. Therefore, writing good and intelligent code will give you the greatest edge possible. Once your queries have been optimized from a logical and semantic point of view, good memory settings can provide you with a nice final increase in speed.

In this section, we will learn about what more memory can do for you and how PostgreSQL can use it for your benefit. Again, this section assumes that we are using single-core queries to make the plans more readable. To ensure that there is always just one core at work, use the following command:

test=# SET max_parallel_workers_per_gather TO 0;
SET

Here is a simple example demonstrating what memory parameters can do for you:

test=# CREATE TABLE t_test (id serial, name text);
CREATE TABLE
test=# INSERT INTO t_test (name)
   SELECT &apos...

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