[jira] [Assigned] (CALCITE-4726) Add support for filters in AggregateExpandWithinDistinctRule

["Will Noble (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CALCITE-4726?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Will Noble reassigned CALCITE-4726:
-----------------------------------

    Assignee: Will Noble

> Add support for filters in AggregateExpandWithinDistinctRule
> ------------------------------------------------------------
>
>                 Key: CALCITE-4726
>                 URL: https://issues.apache.org/jira/browse/CALCITE-4726
>             Project: Calcite
>          Issue Type: Improvement
>            Reporter: Will Noble
>            Assignee: Will Noble
>            Priority: Blocker
>
> Currently, {{AggregateExpandWithinDistinctRule}} does not fire if any of the aggregate calls in the aggregate have a filter. We should support filters.
> For example, the following query will not be handled by the current rule due to the {{FILTER}} clause:
> {code:java}
> SELECT deptno,
>     SUM(sal),
>     SUM(sal) WITHIN DISTINCT (job) FILTER (WHERE ename LIKE 'A%')
> FROM emp
> GROUP BY deptno
> {code}



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