Forgot to add facet.mincount=1, obviously. But still, is this the only or prefered way of doing something along these lines? Or is there a different (better) approach?
Best regards, Aleksander On Thu, Dec 17, 2009 at 5:59 PM, Aleksander Stensby < aleksander.sten...@integrasco.com> wrote: > A follow up question on this Hoss: > If I have a set of documents, let's say this email thread. Each email has a > unique author. All emails in the thread are indexed with "threadid=33" If I > want to count the number of unique authors in this email thread, I could go > along the lines you mention at the end: > rows=0&threadid=33&facet=true&facet.field=author&limit=-1 > then count all returned facets. This works, but becomes unfeasable when the > number of unique author values in the index is large. Right? > So the limit=-1 solution is just not working for such fields. But would > work well for "category" if the number of unique categories is low... > It's almost faster to retrieve all entries from the thread and count > programatically the number of unique authors... But obviouslly, I don't want > to do that! > > So, how would you go about to find the number of unique authors in this > scenario? > > Cheers, > Aleks > > > On Wed, Sep 2, 2009 at 12:57 AM, Chris Hostetter <hossman_luc...@fucit.org > > wrote: > >> >> : lets say you filter your query on something and want to know how many >> : distinct "categories" that your results comprise. >> : then you can facet on the category field and count the number of facet >> : values that are returned, right? >> >> if you count the number of facet values returned you are getting a "count >> of disctinct values" >> >> if you just want the list of distinct values in a field (for your whole >> index) there TermsComponent is the fastest way. >> >> if you want the list of distinct values across a set of documents, then >> facet on that field when doing your query. >> >> "select distinct category from books where bookInStock='true'" is analgous >> to looking at the facet section of... >> >> rows=0&q=bookInStock:true&facet=true&facet.field=category >> >> >> -Hoss >> >> >
