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Hello, I have a model with groups and questions. Questions are grouped together, but there are some groups with subgroups. And it can go at any depth. I want to aggregate the answers to the questions on the top level, but I am not able to handle properly the nested sets data model. Does anybody have experience in that?
This article might help:
https://community.powerbi.com/t5/Community-Blog/Design-Pattern-Groups-and-Super-Groups/ba-p/138149
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