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https://issues.apache.org/jira/browse/CALCITE-774?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14604293#comment-14604293
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Sean Hsuan-Yi Chu commented on CALCITE-774:
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https://github.com/apache/incubator-calcite/pull/101
> When Group By clause is present, the argument in window function should not
> refer to any column outside Group By
> ----------------------------------------------------------------------------------------------------------------
>
> Key: CALCITE-774
> URL: https://issues.apache.org/jira/browse/CALCITE-774
> Project: Calcite
> Issue Type: Bug
> Reporter: Sean Hsuan-Yi Chu
> Assignee: Sean Hsuan-Yi Chu
>
> An {color:red}invalid{color} query such as:
> {code}
> select max(empno) over ()
> from emp
> group by deptno
> {code}
> This query is invalid because the argument in max (i.e., empno) points at a
> column which is not present in Group By clause. However, Calcite does not
> catch it but generate a plan.
> Invalid queries should fail early to reduce potential confusion.
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