You want to display the two products with the least revenue and the two products with the most revenue.
Define the following condition:
The query now displays the two products with the most revenue and the two with the least:
Rule 3: Linking Multiple Condition Rows
The individual components of a condition, the condition rows are logically linked with OR. A characteristic value is displayed if it fulfills at least one of the condition rows.
In this case, you can see the union of the two condition lines, the two products with the greatest revenue and the two with the lowest revenue.