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https://issues.apache.org/jira/browse/CALCITE-461?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14228355#comment-14228355
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Jesus Camacho Rodriguez commented on CALCITE-461:
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[~julianhyde], I have started working on the support of GroupingSets in the
translation from Hive to Calcite, and once I pass the GroupingSets to Calcite,
I'm hitting the _CALCITE_461_FIXED_ assertion in the trimFields method in
[RelFieldTrimmer.java|https://github.com/apache/incubator-calcite/blob/master/core/src/main/java/org/apache/calcite/sql2rel/RelFieldTrimmer.java].
Is that the only method that needs to be adapted at the moment in order to
handle GroupingSets correctly?
> Convert more planner rules to handle grouping sets
> --------------------------------------------------
>
> Key: CALCITE-461
> URL: https://issues.apache.org/jira/browse/CALCITE-461
> Project: Calcite
> Issue Type: Bug
> Reporter: Julian Hyde
> Assignee: Jesus Camacho Rodriguez
>
> Very few planner rules can handle non-simple Aggregates.
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