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https://issues.apache.org/jira/browse/CALCITE-6249?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17815152#comment-17815152
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Ruben Q L commented on CALCITE-6249:
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[~kramerul] I think the current ticket is related to CALCITE-5647, but not a
duplicate of it (I have updated the link between both accordingly).
I think the commit that you propose seems reasonable, could you create the
corresponding PR?
> RelNode::estimatedRowCount should not be used in computeSelfCost
> ----------------------------------------------------------------
>
> Key: CALCITE-6249
> URL: https://issues.apache.org/jira/browse/CALCITE-6249
> Project: Calcite
> Issue Type: Bug
> Reporter: Ulrich Kramer
> Priority: Minor
>
> {{RelNode::estimatedRowCount}} is still used in many place inside
> {{computeSelfCost}}
> If it should be possible to implement the estimation of the row count
> completely outside Calcite, these calls should be replaced by
> {{mq.getRowCount(rel)}}.
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