solr more like this get grouped result

Question

I have more like this query in solr and I would like to group result based on special field. I used group feature in solr.

I set:

group = true & group.field = field 1 & group.limit = 3

And I have this query

But as I see more like this does not support group. I use solr 5.3.1

Questions

• How I can group solr result?
• Why solr does not support group?

Answer 1

Use the CollapsingQParser as documented here: https://cwiki.apache.org/confluence/display/solr/Collapse+and+Expand+Results

For instance, if you want to group for field1 and limit 3 as you mentioned:

fq={!collapse field=fiedl1 max=3}