Category: 01. Aggregate Function

The SUM() function is designed to calculate the total of a numeric column across multiple rows. This function is particularly useful in financial contexts, where organizations often need to know total revenues, expenses, or salaries. The syntax for using SUM() is straightforward: SELECT SUM(column_name) FROM table_name WHERE condition;. For example, if you want to find…

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…

Aggregate functions in Oracle Database are special functions that process a set of values and return a single summary value. They are crucial for data analysis, allowing users to derive meaningful insights from large datasets. By performing operations such as summation, averaging, and counting, these functions simplify complex data into understandable summaries. This is particularly…