Do you have an idea how I can create that view/report/Excel export from Rollbase?
Yes Ruben, this is presently a limitation in Rollbase that we can select only one side of a Relationship (only parents, however in generated report it walks over child records, hence, also a defect) in case of hierarchical relationships when defining Tabular report layers. We will add this to our backlog and consider addressing it in a forthcoming release.
Note:
I was able to create such a report using the JavaScript report functionality, but it would be great if this was possible out-of-the-box as well.
Yes Ruben, this is presently a limitation in Rollbase that we can select only one side of a Relationship (only parents, however in generated report it walks over child records, hence, also a defect) in case of hierarchical relationships when defining Tabular report layers. We will add this to our backlog and consider addressing it in a forthcoming release.
We have addressed this in the forthcoming Rollbase release due in 2018 Q2. Meanwhile you can also give it a try on EAP.