Creating Custom Aggregators

The Custom Aggregator option allows you to create aggregators using the Expression Builder.

You can form aggregator conditions using all the operators given in the Expression Builder. The Expression Builder is used to define free flow text aggregator conditions. To define an aggregator condition using the Expression Builder, follow these steps:

1. In the Aggregator pane, click Custom Aggregator.
2. Enter the Name for the Aggregator. This field allows only the following characters: A-Z a-z 0-9 '_' For example, Abc_123 or Abc 123.
3. Select the required Attributes and Operators to create the Aggregator. The resulting condition is displayed in the Condition Value box.
4. Select the required Look Back option and provide the required Value details. You can further configure the Look Back period for the aggregator when building the expression.
5. Add the aggregator using one of the following options. A confirmation message displays.
   • Click Add to add this aggregator to the List of Aggregators.
   • Click Add & Attach to add this aggregator to the List of Aggregators and attach it to the current data set.
6. When you have finished creating aggregators, click Save.