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https://issues.apache.org/jira/browse/CALCITE-859?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Julian Hyde resolved CALCITE-859.
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Resolution: Duplicate
> Make AggregateProjectMergeRule extensible
> -----------------------------------------
>
> Key: CALCITE-859
> URL: https://issues.apache.org/jira/browse/CALCITE-859
> Project: Calcite
> Issue Type: Improvement
> Reporter: Ashutosh Chauhan
> Assignee: Ashutosh Chauhan
>
> 1) Allow it to do matching on extended classes.
> 2) Use factories to create rel nodes (projects).
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