[jira] [Commented] (SOLR-2553) Nested Field Collapsing

["yuanyun.cn (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SOLR-2553?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13694058#comment-13694058 ] 

yuanyun.cn commented on SOLR-2553:
----------------------------------

We find this jira and https://issues.apache.org/jira/browse/SOLR-2526 - Grouping on multiple fields is very useful for us.
Any plan to implement this?
Thanks...
                
> Nested Field Collapsing
> -----------------------
>
>                 Key: SOLR-2553
>                 URL: https://issues.apache.org/jira/browse/SOLR-2553
>             Project: Solr
>          Issue Type: Improvement
>          Components: SearchComponents - other
>            Reporter: Martijn Laarman
>
> Currently specifying grouping on multiple fields returns multiple datasets. 
> It would be nice if Solr supported cascading / nested grouping by applying the first group over the entire result set, the next over each group and so forth and so forth. 
> Even if limited to supporting nesting grouping 2 levels deep would cover alot of use cases. 
> group.field=location&group.field=type
> -Location X
> ---Type 1
> -----documents
> ---Type 2
> ----documents
> -Location Y
> ---Type 1
> ----documents
> ---Type 2
> ----documents
> instead of 
> -Location X
> -- documents
> -Location Y
> --documents
> -Type 1
> --documents
> -Type2
> --documents

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