Included in the current release is the option to add fields to your target data extension. After creating your segment within Segment Designer you can now choose to add fields already in your segment criteria (grayed out), fields from Marketing Cloud system data views and add fields from other data extensions available in the Attribute Groups within the Data Designer of Marketing Cloud.
Step 1: design your segment via our visual drag and drop Segment Designer
Step 2: choose if you want to overwrite or use the update data action
Step 3: optionally choose a data retention policy
Step 4: choose fields to be included in your target data extension
You can choose to have the value of the field to be included or use a SUM, AVG or COUNT function. For example;
To include a value related to an object that has a one-to-many relationship, you need to determine how you want to order your data. For example; if you want the invoice number of a specific transaction, you need to choose an attribute to order the data. In this case you could choose a date field to order the data and include the most recent transaction.
View the video below to see how this works in Segment Designer.