[jira] [Resolved] (SOLR-18441) Add Global Ordinals Join Query Parser (`{!globalOrdinalsJoin}`) for single-index, single-field joins

["David Smiley (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-18441?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

David Smiley resolved SOLR-18441.
---------------------------------
    Fix Version/s: 10.1
       Resolution: Fixed

> Add Global Ordinals Join Query Parser (`{!globalOrdinalsJoin}`) for single-index, single-field joins
> ----------------------------------------------------------------------------------------------------
>
>                 Key: SOLR-18441
>                 URL: https://issues.apache.org/jira/browse/SOLR-18441
>             Project: Solr
>          Issue Type: New Feature
>            Reporter: Mikhail Khludnev
>            Assignee: Mikhail Khludnev
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 10.1
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> Implement a new Query Parser plugin for Solr that brings Lucene's JoinUtil global ordinals join capability. This feature enables efficient query-time joins within a single index using global ordinals over a shared single-valued string docValues field.
> Use Cases:
> Join parent-child document relationships using global ordinals for better performance than traditional joins
> Support bidirectional joins (from parent to child, and child to parent)
> Enable score mode selection (None, Avg, Max, Min, Total) for join result scoring
> Scope: This implementation is limited to:
> Single index (joins within the same index)
> Single field (both "from" and "to" sides join on the same field)
> String docValues fields (single-valued only)



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