On Wed, Apr 15, 2009 at 1:13 AM, Harsch, Timothy J. (ARC-SC)[PEROT SYSTEMS] <timothy.j.har...@nasa.gov> wrote:
> How could I get a count of distinct terms for a given query? For example: > The Wiki page > http://wiki.apache.org/solr/SimpleFacetParameters > has a section "Facet Fields with No Zeros" > which shows the query: > > http://localhost:8983/solr/select?q=ipod&rows=0&facet=true&facet.limit=-1&facet.field=cat&facet.mincount=1&facet.field=inStock > and returns results where the inStock field has two facet counts (false is > 3, and true is 1) > > But what I would want to know is how many distinct values were found ( in > this case it would be 2 / true and false ). I realize I could count the > number of terms returned, but if the set were large that would be > non-performant. Is there a better way? > To do this with facets, you'd need to return all of them. The other way of doing this is by making a request to /admin/luke?fl=inStock which will return the number of unique terms in that field. http://wiki.apache.org/solr/LukeRequestHandler You can also index the number of unique values in a field as a separate field. -- Regards, Shalin Shekhar Mangar.
