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https://issues.apache.org/jira/browse/SPARK-12660?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15258705#comment-15258705
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Luciano Resende commented on SPARK-12660:
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Please disregard my last pr
> Rewrite except using anti-join
> ------------------------------
>
> Key: SPARK-12660
> URL: https://issues.apache.org/jira/browse/SPARK-12660
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Reynold Xin
>
> Similar to SPARK-12656, we can rewrite except in the logical level using
> anti-join. This way, we can take advantage of all the benefits of join
> implementations (e.g. managed memory, code generation, broadcast joins).
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