Aggregate Functions
Aggregate functions are operations in databases and programming that compute a single result from a set of input values, such as counting, summing, averaging, or finding maximum/minimum values. They are essential for data analysis, reporting, and summarizing large datasets efficiently. Commonly used in SQL queries and data processing frameworks, they help transform raw data into meaningful insights.
Developers should learn aggregate functions when working with databases, data analysis, or business intelligence applications to perform calculations on grouped data, such as generating sales reports or analyzing user behavior. They are crucial for optimizing queries and reducing data transfer by processing results directly in the database, improving performance in systems like web applications or data pipelines.