PostgreSQL is available for download as ready-to-use packages or installers for various platforms, as well as a source code archive if you want to build it yourself.
PostgreSQL is an object-relational database management system (ORDBMS) based on POSTGRES, Version 4.2, developed at the University of California at Berkeley Computer Science Department.
Preface 1. What Is PostgreSQL? 2. A Brief History of PostgreSQL 3. Conventions 4. Further Information 5. Bug Reporting Guidelines I. Tutorial 1. Getting Started 2. The SQL Language 3. Advanced Features II. The SQL Language 4. SQL Syntax 5. Data Definition 6. Data Manipulation 7. Queries 8. Data Types 9. Functions and Operators 10. Type ...
Chapter 1. Getting Started Table of Contents 1.1. Installation 1.2. Architectural Fundamentals 1.3. Creating a Database 1.4. Accessing a Database Prev Up …
If it is enabled, PostgreSQL will convert x = NULL clauses to x IS NULL. If the expression is row-valued, then IS NULL is true when the row expression itself is null or when all the row's fields are null, while IS NOT NULL is true when the row expression itself is non-null and all the row's fields are non-null.
The object-relational database management system now known as PostgreSQL is derived from the POSTGRES package written at the University of California at Berkeley.
PostgreSQL can be installed by any unprivileged user; no superuser (root) access is required. If you are installing PostgreSQL yourself, then refer to Chapter 17 for instructions on installation, and return to this guide when the installation is complete.
Description psql is a terminal-based front-end to PostgreSQL. It enables you to type in queries interactively, issue them to PostgreSQL, and see the query results. Alternatively, input can be from a file or from command line arguments.
