SolrQuery::addGroupField
  Add a field to be used to group results.
  
 
  Description
  
   public SolrQuery SolrQuery::addGroupField
    ( string $value
   )
  
  
 
 
  See Also
  
   -  SolrQuery::setGroup
-  SolrQuery::addGroupFunction
-  SolrQuery::addGroupQuery
-  SolrQuery::addGroupSortField
-  SolrQuery::setGroupFacet
-  SolrQuery::setGroupOffset
-  SolrQuery::setGroupLimit
-  SolrQuery::setGroupMain
-  SolrQuery::setGroupNGroups
-  SolrQuery::setGroupTruncate
-  SolrQuery::setGroupFormat
-  SolrQuery::setGroupCachePercent