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Introduction: The Power of Custom Aggregations
In the realm of data analysis, not all questions can be answered with standard aggregation functions like SUM or AVERAGE. Sometimes, you need to craft specialized data summaries that cater to your unique requirements. PostgreSQL allows you to do just that with custom aggregations. In this in-depth guide, we’ll explore the art of creating custom aggregations, starting with the basics and moving on to advanced techniques that can revolutionize your data analysis.
Section 1: The Foundation — Aggregation Basics in PostgreSQL
Before diving into custom aggregations, it’s essential to understand the fundamentals of aggregation in PostgreSQL. We’ll review how standard aggregation functions work and why custom aggregations become necessary for specific use cases.
