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https://issues.apache.org/jira/browse/SOLR-10939?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16060122#comment-16060122
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Hoss Man commented on SOLR-10939:
---------------------------------
At the lucene level it appears that {{JoinUtil}} does support joining on
numeric Points fields (w/o DocValues) if the appropriate numeric type is
specified -- so it seems like:
* ScoreJoinQParser should use the numeric join if the from/to fields are numeric
* JoinQParser should behave as if {{score=None}} was specified (and delegate to
ScoreJoinQParser) if the from/to fields are numeric
* in both cases, better error handling should validate that the fields are of
the same numeric type.
> JoinQParser gives incorrect results with numeric PointsFields
> -------------------------------------------------------------
>
> Key: SOLR-10939
> URL: https://issues.apache.org/jira/browse/SOLR-10939
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Hoss Man
>
> If you try to use the {{\{!join\}}} QParser with numeric points fields, you
> will get silently incorrect results.
> The underlying root cause seems to be that JoinQParser's JoinQuery assumes
> every field it's dealing with has indexed terms. (AFAICT it won't even work
> with {{indexed="false" docValues="true"}} Trie fields????)
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