I haven't seen an issue describing this. Something like this was available in the SOLR-236 patches, but never got committed. I started to create a second pass collector that counts the distinct values of a particular field for the top N groups in LUCENE-3444.
I think there might be a need for a more general approach for this kind of functionality that uses the ValueSource concept in the queries module. Martijn On 7 March 2012 07:03, Jason Rutherglen <jason.rutherg...@gmail.com> wrote: > Are there plans to add the ability to apply functions (eg, sum, > average, distinct, or custom functions) to group'd documents. Such > that the document list per group is not returned, instead the result > of the function is. > > --------------------------------------------------------------------- > To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org > For additional commands, e-mail: dev-h...@lucene.apache.org > > -- Met vriendelijke groet, Martijn van Groningen
