PostgreSQL tutorials with examples: install PostgreSQL, write SELECT queries and joins, work with dates, run VACUUM, back up data and use PL/pgSQL.
In this article, I’m going to walk you through the professional methods for removing a user in PostgreSQL, ensuring you maintain data integrity and avoid orphaned objects. How To Delete User In PostgreSQL Before we dive into the commands, let’s clear up a common point of confusion for those transitioning from other SQL dialects. In … Read more >>
One of the first questions I ask when stepping into a new project is: “What version of PostgreSQL are we running?”. Whether you’re a developer or a DBA, knowing how to check your PostgreSQL version is the fundamental first step in database management. In this article, I’ll show you exactly how to find that information … Read more >>
Knowing how to backup a PostgreSQL database is a fundamental skill. In this article, I will walk you through everything you need to know to secure your data using industry-standard tools and strategies. How To Backup PostgreSQL Database Understanding PostgreSQL Backup Methodologies Before we dive into the commands, you need to understand the two main … Read more >>
Whether you’re a startup or a Fortune 500 firm, you are likely already using Postgres or planning to migrate to it. In this guide, I will leverage my years of experience to walk you through the primary use cases of PostgreSQL in today’s high-tech environment. What Is PostgreSQL Used For The “Single Source of Truth” … Read more >>
In this tutorial, I will walk you through the authoritative reasons why you should choose PostgreSQL for your next project, the technical features that set it apart, and how it handles the demands of an AI-driven world. Why Use PostgreSQL If you ask an experienced engineer today what database to start with, nine times out … Read more >>
I’m often asked: “Should I use PostgreSQL or MongoDB for my next project?” It’s a question that doesn’t have a simple answer, but I’m here to break down everything you need to know to make an informed decision. The database landscape in 2025 has evolved significantly. PostgreSQL has added impressive JSON capabilities that blur the … Read more >>
In this tutorial, we will explore the PostgreSQL character data types, including CHAR, VARCHAR, and TEXT. Now, we will see the differences between TEXT and VARCHAR. At the end of this article, you will get clear guidance on when to use each data type for optimal database performance. PostgreSQL datatype text vs varchar Understanding PostgreSQL … Read more >>
In this Postgresql tutorial, we will learn about “Postgresql import SQL file” using different methods and platforms with multiple examples. We will create and insert some data into the PostgreSQL database using the SQL file or by importing the SQL file. PostgreSQL import SQL file Prerequisites Before you start, ensure you have: Prerequisite Description PostgreSQL … Read more >>
Whether you’re cleaning up your database, restructuring your schema, or preparing for a fresh start, the DROP TABLE command is the best solution.In this PostgreSQL tutorial, we will discuss the PostgreSQL DROP TABLE statement to remove existing table(s) from the current database. PostgreSQL DROP TABLE You can remove table(s) from the database in PostgreSQL by using the statement … Read more >>
In this PostgreSQL tutorial, we will learn about PostgreSQL Data Types. Here we will learn about the different data types available in PostgreSQL with examples. PostgreSQL Data Types PostgreSQL upholds a vast range of Data Types. It contains several data types, including Boolean, Numeric, Character, Temporal, Array, JSON, UUID, and special data types. When generating … Read more >>
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