Using the Auto-Aggregate Functions

The auto-aggregate feature is a productivity feature that enables you to specify a set of aggregations to apply as default aggregations to numeric columns for a specific table. A typical use is to automatically aggregate some of the columns in a fact table.
To use the auto-aggregate feature:
  1. Select a table in the design view and click Properties to view the table properties.
  2. Use the Auto-Aggregate menu to set the value to Enabled.
  3. Place your pointer in the Functions cell and then click the ellipsis button to open the Choose Aggregations window.
  4. Select the check boxes for the aggregate functions that you want to apply and then click Apply.
Whenever you add a column to the query, the selected aggregate functions are automatically applied.