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https://issues.apache.org/jira/browse/IMPALA-13577?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17921856#comment-17921856
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Steve Carlin commented on IMPALA-13577:
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For performance reasons, it is better to filter out rows before applying a
"project" which may have functions in it (so the functions are processed for
less rows)
> Calcite Planner: Push filter rel nodes through project rel nodes
> ----------------------------------------------------------------
>
> Key: IMPALA-13577
> URL: https://issues.apache.org/jira/browse/IMPALA-13577
> Project: IMPALA
> Issue Type: Sub-task
> Reporter: Steve Carlin
> Priority: Major
>
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