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https://issues.apache.org/jira/browse/SOLR-2524?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13064918#comment-13064918
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Cameron commented on SOLR-2524:
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Trying out this functionality. Not sure this is the place, but a couple more
questions:
1. How is group.query different from fq? For example, by adding:
q=things&group=true&group.query=type:video, I'd expect all docs with type:video
to be contained in a group, and the rest of the docs to fill out the rest of
the results. Currently it behaves like fq, only returning a single group of docs
2. Is there a way to have the result set "wrap" around a group? For example, if
results 1-3 are non-grouped (the null group), then results 4-6 are grouped
(type:video), and the rest are non-grouped again, assuming this is where they
fall by score.
3. group.query doesn't appear to obey the sort param?
4. Specifying multiple group.query entries doesn't appear to work with
group.main=true
Again, sorry if this isn't the correct forum, but if either of the above
qualify as new functionality, I can properly create new tickets for them
individually
> Adding grouping to Solr 3x
> --------------------------
>
> Key: SOLR-2524
> URL: https://issues.apache.org/jira/browse/SOLR-2524
> Project: Solr
> Issue Type: New Feature
> Reporter: Martijn van Groningen
> Assignee: Martijn van Groningen
> Fix For: 3.3
>
> Attachments: SOLR-2524.patch, SOLR-2524.patch, SOLR-2524.patch,
> SOLR-2524.patch, SOLR-2524.patch, SOLR-2524.patch
>
>
> Grouping was recently added to Lucene 3x. See LUCENE-1421 for more
> information.
> I think it would be nice if we expose this functionality also to the Solr
> users that are bound to a 3.x version.
> The grouping feature added to Lucene is currently a subset of the
> functionality that Solr 4.0-trunk offers. Mainly it doesn't support grouping
> by function / query.
> The work involved getting the grouping contrib to work on Solr 3x is
> acceptable. I have it more or less running here. It supports the response
> format and request parameters (expect: group.query and group.func) described
> in the FieldCollapse page on the Solr wiki.
> I think it would be great if this is included in the Solr 3.2 release. Many
> people are using grouping as patch now and this would help them a lot. Any
> thoughts?
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