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https://issues.apache.org/jira/browse/CALCITE-551?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Julian Hyde resolved CALCITE-551.
---------------------------------
Resolution: Fixed
Fix Version/s: 1.7.0
Seems to be fixed by CALCITE-864 fix. Added test cases in
http://git-wip-us.apache.org/repos/asf/calcite/commit/82b58604.
> Sub-query inside aggregate function
> -----------------------------------
>
> Key: CALCITE-551
> URL: https://issues.apache.org/jira/browse/CALCITE-551
> Project: Calcite
> Issue Type: Bug
> Reporter: Julian Hyde
> Assignee: Julian Hyde
> Fix For: 1.7.0
>
>
> Calcite SQL-to-rel translator cannot handle a sub-query inside an aggregate
> function. An example is SqlToRelConverterTest.testAggCaseInSubquery:
> {code}SELECT SUM(
> CASE WHEN deptno IN (SELECT deptno FROM dept) THEN 1
> ELSE 0 END)
> FROM emp{code}
> Similar issue CALCITE-516 involves IN with constant list inside an aggregate
> function, which is treated similarly to a sub-query but is simpler.
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