Book Image

Learning PostgreSQL 10 - Second Edition

Book Image

Learning PostgreSQL 10 - Second Edition

Overview of this book

PostgreSQL is one of the most popular open source databases in the world, supporting the most advanced features included in SQL standards. This book will familiarize you with the latest features released in PostgreSQL 10. We’ll start with a thorough introduction to PostgreSQL and the new features introduced in PostgreSQL 10. We’ll cover the Data Definition Language (DDL) with an emphasis on PostgreSQL, and the common DDL commands supported by ANSI SQL. You’ll learn to create tables, define integrity constraints, build indexes, and set up views and other schema objects. Moving on, we’ll cover the concepts of Data Manipulation Language (DML) and PostgreSQL server-side programming capabilities using PL/pgSQL. We’ll also explore the NoSQL capabilities of PostgreSQL and connect to your PostgreSQL database to manipulate data objects. By the end of this book, you’ll have a thorough understanding of the basics of PostgreSQL 10 and will have the necessary skills to build efficient database solutions.
Table of Contents (23 chapters)
Title Page
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface

Low-level database access with psycopg2


psycopg2 is one of the most popular PostgreSQL drivers for Python. It is compliant to the Python's DB API 2.0 specification. It is mostly implemented in C and uses the library, libpq. It is thread safe, which means that you can share the same connection object between several threads. It can work both with Python 2 and Python 3.

The official web page of the library is located at http://initd.org/psycopg/.

The driver psycopg2 can be installed with PIP on Linux from the command line as follows:

user@host:~$ sudo pip3 install psycopg2
[sudo] password for user: 
Collecting psycopg2
 Downloading psycopg2-2.7.3.1-cp35-cp35m-manylinux1_x86_64.whl (2.6MB)
 100% |████████████████████████████████| 2.6MB 540kB/s 
Installing collected packages: psycopg2
Successfully installed psycopg2-2.7.3.1

Type this in Windows from the command line:

C:\Users\User>python -m pip install psycopg2
Collecting psycopg2
 Downloading psycopg2-2.7.3.1-cp35-cp35m-win_amd64.whl (943kB)...