Key Aggregation Functions in power BI

Aggregation functions calculate a scalar value (e.g., count, sum, average, minimum, or maximum) for rows in a column or table based on an expression. These functions are essential for summarizing and analyzing data.

Key Functions and Their Descriptions:

• APPROXIMATEDISTINCTCOUNT: Estimates the count of unique values in a column.

• AVERAGE / AVERAGEA / AVERAGEX: Calculate the arithmetic mean of numbers in a column or over an expression.

• COUNT / COUNTA / COUNTX / COUNTAX: Count rows with non-blank values or evaluate expressions across tables.

• COUNTBLANK: Counts blank cells in a column.

• COUNTROWS: Counts total rows in a table or an expression-defined table.

• DISTINCTCOUNT / DISTINCTCOUNTNOBLANK: Count distinct values in a column, with or without blanks.

• MAX / MAXA / MAXX: Find the largest value in a column or from evaluating an expression across rows.

• MIN / MINA / MINX: Identify the smallest value in a column or expression, including logical and text-represented numbers.

• PRODUCT / PRODUCTX: Compute the product of numbers in a column or an expression across rows.

• SUM / SUMX: Calculate the total of numbers in a column or the sum of an expression evaluated for each row in a table.

These functions enable efficient data aggregation, essential for data analysis and reporting.