I sent a Solr group query like
group=true&group.field=colorid
Some of the records are not assigned colorid and so they all are returned as null along with the count. Now I have a pivot query like
facet=true&facet.pivot=colorid,featureid
This query does not returns me the count of the null colorids. Any help as to how can I get those?
Try using
facet.missing=true
It should show all the null values as one facet.
https://cwiki.apache.org/confluence/display/solr/Faceting#Faceting-Thefacet.missingParameter