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https://issues.apache.org/jira/browse/JENA-595?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13830971#comment-13830971
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Andy Seaborne commented on JENA-595:
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A way to see the optimizer better is to use {{arq.qparse --print=op --print=opt
--file query.rq}} This shows the input and output of optimization. Saves
having to have data that causes the situation and save having to execute a
query.
More general fix applied - all unprocessed expressions moved into {{unpushed}}.
An intermediate {{(filter)}} directly under {{(extend)}} is never generated.
> Improve filter placement optimization
> -------------------------------------
>
> Key: JENA-595
> URL: https://issues.apache.org/jira/browse/JENA-595
> Project: Apache Jena
> Issue Type: Improvement
> Components: ARQ
> Reporter: Andy Seaborne
> Assignee: Andy Seaborne
> Attachments: FilterPlacementError.java, JENA-595-FilterPlacement.patch
>
>
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