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https://issues.apache.org/jira/browse/CALCITE-3428?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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jin xing updated CALCITE-3428:
------------------------------
Description:
AggregateRemoveRule fails to remove the top Aggregate for below SQL
{code:java}
select mgr, sum(sum_sal)
from
(select mgr, deptno, sum(sal) sum_sal
from sales.emp
group by mgr, deptno)
where deptno=100
group by mgr
{code}
The reason is that
> Refine RelMdColumnUniqueness for Filter by considering constant columns
> -----------------------------------------------------------------------
>
> Key: CALCITE-3428
> URL: https://issues.apache.org/jira/browse/CALCITE-3428
> Project: Calcite
> Issue Type: Improvement
> Reporter: jin xing
> Assignee: jin xing
> Priority: Major
>
> AggregateRemoveRule fails to remove the top Aggregate for below SQL
> {code:java}
> select mgr, sum(sum_sal)
> from
> (select mgr, deptno, sum(sal) sum_sal
> from sales.emp
> group by mgr, deptno)
> where deptno=100
> group by mgr
> {code}
> The reason is that
>
>
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