What if you put in a default value for the group_id field in the solr schema - would that work for you? e.g. something like 'unknown' Then you'll get all those with no original group_id value still grouped together, and you can figure out at display time what you want to do with them.
Bob Sandiford | Lead Software Engineer | SirsiDynix P: 800.288.8020 X6943 | bob.sandif...@sirsidynix.com www.sirsidynix.com > -----Original Message----- > From: Andy [mailto:angelf...@yahoo.com] > Sent: Thursday, January 06, 2011 3:06 PM > To: solr-user@lucene.apache.org > Subject: Will Result Grouping return documents that don't contain the > specified "group.field"? > > I want to group my results by a field named "group_id". > > However, some of my documents don't contain the field "group_id". But I > still want these documents to be returned as part of the results as > long as they match the main query "q". > > Do I need to do anything to tell Solr that I want those documents? > > Thanks. > > >