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https://issues.apache.org/jira/browse/CALCITE-4726?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Haisheng Yuan reopened CALCITE-4726:
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> 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
> Fix For: 1.28.0
>
>
> 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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