Free Programming Tutorials

Introduction to aggregatesIf you’ve spent much time using spreadsheets, you’re already familiar with the concept of aggregate functions. Any sort of function that operates on a large set (column) of data and typically returns a single value is an aggregate function. There are a wide range of aggregate functions, but they tend to break down into two major categories:properties such as a number of members, minimums, and maximums; and statistics such as an average or standard deviation.H 
continue >>