If you add a filter query to your original query : fq=genre:A You know that your results ( group heads included) will just be of that genre. So I think we are not getting your question properly.
Can you try to express your requirement from the beginning. Leave outside grouping or field collapsing at the moment, let's see what is the best way to solve the requirement in Apache Solr. ----- --------------- Alessandro Benedetti Search Consultant, R&D Software Engineer, Director Sease Ltd. - www.sease.io -- Sent from: http://lucene.472066.n3.nabble.com/Solr-User-f472068.html
