DAX, the aggregation functions

Aggregation of data is a process that we’re implicitly performing every time we drag a reporting dimension in the field Values. However, when you create complex reports, it is useful to use functions for aggregation (SUM, AVERAGE, COUNT) to create measures that will be used in the report. Once thought out measures may be used as a building block to create complex DAX expressions.

Functions for data aggregation

Aggregation is a term that signifies unification and calculation. It combines one or more data sets, which are given as function arguments, for performing a mathematical operation. This may be: summing up a series of data, counting, averaging, calculating the minimum or maximum value of a given set of numbers… Aggregate functions are very commonly used and should know them well.