If I index a bunch of email documents, is there a way to say"show me all email documents, but only one per To: email address" so that if there are a total of 10 distinct To: fields in the corpus, I get back 10 email documents?
I'm aware of http://wiki.apache.org/solr/Deduplication but I want to retain the ability to search across all of my email documents most of the time, and only occasionally search for the distinct ones. Essentially I want to do a SELECT DISTINCT to_field FROM documents where a normal search is a SELECT * FROM documents Thanks for any pointers.
