Report Recipe Filter
Is there a way to add a filter that can return only values where a relationship field is empty? I tried this but it doesn't seem to work.
<%filter%>((field[Category] = "My Category") and not (relationship.exists forwards using field["My Relationship Field"]))<%endfilter%>
I am able to achieve this by using <%beginrelationshipsdetailL2 My Relationship Field%> and <%beginrelationshipsection none%> but I believe this is resulting in extra processing.

