Matthias, will try to give you a few answers :)
It's completely okay, when various documents don't use all fields .. that's how solr works. For Sorting related to missing Values, you might Search for sortMissingLast / sortMissingFirst . The second paragraph sounds like http://wiki.apache.org/solr/FieldCollapsingwhich is available for Solr4.0 Regards Stefan On Fri, Jan 14, 2011 at 10:49 AM, Matthias Pigulla <m...@webfactory.de> wrote: > Dear Solr-users, > > is there a compilation of FAQs particularly targeting at schema design? I > have a two questions that probably have been asked before: > > - I have to map different kinds of documents into my schema. Some of these > documents have one or multiple time/dates that might be relevant for > querying or sorting. I feel that it would be best to keep dates with > different semantics in different fields. Does it pose any problems when some > of these fields are filled only for certain documents? Probably when such a > field is used for sorting, documents not providing a field value will be at > one end of the result set, depending on sort order? > > - Sometimes several documents belong together as they are part of a bigger > concept. I could keep a reference to this concept along with every document > in the index. Now would it be possible to perform a search where hits on > documents are grouped by these concepts? That is, I would like to get a > result list that contains *only one* entry per concept but for each of these > entry gives me a hit which document(s) contained the match? > > Thanks a lot! > -mp. >
