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https://issues.apache.org/jira/browse/SOLR-2272?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12999014#comment-12999014
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Briggs Thompson edited comment on SOLR-2272 at 2/24/11 8:06 PM:
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>From the examples provided it doesn't look like this is possible but I just
>want to confirm with you guys. It looks like all of the examples are joins on
>fields within the same schema, but I am interested in joining on fields of a
>different schema (multiple core join).
I haven't played around with the join yet, but would the following be possible?
Schema1
docId: int
body : text
Schema2
id: int
docId : int
q={!join from=Core1.docId to=Core2.docId}Core1.body:"super" AND Core2.ID:[1 TO
10]
We have a similar use case to Tanguy Moal's example with one document type
needs updating more often than the other. I know we could store the Core2 ids
in an array of integers in Core1, but every time that ID mappings change we
would have to re-index (with a potential of constant re-indexing of nearly the
same data).
Thanks for your help,
Briggs
was (Author: briggs):
From the examples provided it doesn't look like this is possible but I just
want to confirm with you guys. It looks like all of the examples are joins on
fields within the same schema, but I am interested in joining on fields of a
different schema (multiple core join).
I haven't played around with the join yet, but would the following be possible?
Schema1
docId: int
body : text
Core2
id: int
docId : int
q={!join from=Core1.docId to=Core2.docId}Core1.body:"super" AND Core2.ID:[1 TO
10]
We have a similar use case to Tanguy Moal's example with one document type
needs updating more often than the other. I know we could store the Core2 ids
in an array of integers in Core1, but every time that ID mappings change we
would have to re-index (with a potential of constant re-indexing of nearly the
same data).
Thanks for your help,
Briggs
> Join
> ----
>
> Key: SOLR-2272
> URL: https://issues.apache.org/jira/browse/SOLR-2272
> Project: Solr
> Issue Type: New Feature
> Components: search
> Reporter: Yonik Seeley
> Fix For: 4.0
>
> Attachments: SOLR-2272.patch, SOLR-2272.patch
>
>
> Limited join functionality for Solr, mapping one set of IDs matching a query
> to another set of IDs, based on the indexed tokens of the fields.
> Example:
> fq={!join from=parent_ptr to:parent_id}child_doc:query
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