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https://issues.apache.org/jira/browse/SOLR-10551?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Joel Bernstein updated SOLR-10551:
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Attachment: SOLR-10551.patch
> Add cat and list Streaming Expressions
> --------------------------------------
>
> Key: SOLR-10551
> URL: https://issues.apache.org/jira/browse/SOLR-10551
> Project: Solr
> Issue Type: New Feature
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Joel Bernstein
> Attachments: SOLR-10551.patch
>
>
> The *cat* expression concatenates streams. Sample syntax:
> {code}
> cat(expr,expr, ...)
> {code}
> This *list* expression gathers the tuples from a stream and flattens them
> into a list in a single tuple. Sample syntax:
> {code}
> list(name, expr)
> {code}
> The *name* param is the key in the tuple pointing to the list.
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