Lesson 110: Create a New Range Custom Data Type for Age Group in PostgreSQL Step by Step
In this lesson, you will learn how to create a new range custom data type for age groups in PostgreSQL step by step. We will explain what range types are, how they store values between a lower and upper limit, and how they can be used to manage age categories more clearly. Through simple examples, you will understand how to create and use a custom range type in PostgreSQL tables and queries. This lesson is helpful for database developers, DBAs, data analysts, and students who want to organize and validate range-based data in PostgreSQL.