In Oracle, the most commonly used aggregate functions are SUM(), AVG(), COUNT(), MIN(), and MAX(). Each of these functions serves a distinct purpose and can be applied to different types of data. The SUM() function totals numeric values, while AVG() calculates the mean. The COUNT() function counts rows or non-null entries, making it versatile for various queries. MIN() and MAX() help find the smallest and largest values in a dataset, respectively. Together, these functions allow users to perform a wide range of analyses on their data. Understanding these aggregate functions is foundational for anyone working with SQL and databases, as they provide essential insights that inform decision-making and strategic planning.
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