Learn what aggregate functions are, how to use them in SQL queries, and why they are useful for BI. Find examples of common scenarios and calculations.

Aggregate functions in SQL are used to perform calculations on a set of values and return a single result. These functions operate on a group of rows and produce a single value as output. Some common ...

I realized how much easier my life would be if SQL had a mode() aggregate function. (I'm using it in the mathematical sense). I'm guessing that either I use SQL in a wierd way or there is a good ...

Initialize the accumulator variable (s) based on the type of aggregate functioN Retrieve the data from the table or source based on the query's filtering conditions, if any. Iterate over the retrieved ...