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https://issues.apache.org/jira/browse/SOLR-8593?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15764265#comment-15764265
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Joel Bernstein commented on SOLR-8593:
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I saw on the Calcite dev list that the next release is coming pretty soon. So,
I'm not going to move ahead creating another ticket for the HavingStream.
I'm planning to create a new branch from master locally and merge this branch
into to it so I can test with the latest master code. Master has some
significant changes both in Lucene and Solr that effects SQL. Specifically the
/export handler has been refactored and there is new docValues iterator API to
performance test. This will likely take up the rest of the year me. But
hopefully after the new Calcite releases we will be ready to merge to master.
> Integrate Apache Calcite into the SQLHandler
> --------------------------------------------
>
> Key: SOLR-8593
> URL: https://issues.apache.org/jira/browse/SOLR-8593
> Project: Solr
> Issue Type: Improvement
> Reporter: Joel Bernstein
> Assignee: Joel Bernstein
> Attachments: SOLR-8593.patch, SOLR-8593.patch
>
>
> The Presto SQL Parser was perfect for phase one of the SQLHandler. It was
> nicely split off from the larger Presto project and it did everything that
> was needed for the initial implementation.
> Phase two of the SQL work though will require an optimizer. Here is where
> Apache Calcite comes into play. It has a battle tested cost based optimizer
> and has been integrated into Apache Drill and Hive.
> This work can begin in trunk following the 6.0 release. The final query plans
> will continue to be translated to Streaming API objects (TupleStreams), so
> continued work on the JDBC driver should plug in nicely with the Calcite work.
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