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https://issues.apache.org/jira/browse/FLINK-27006?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jark Wu closed FLINK-27006.
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Resolution: Fixed
Fixed in master: 556b2e95db5824906bc969f7b02c0fb79d41d5ee
> Support SingleValueAggFunction for Char data type
> -------------------------------------------------
>
> Key: FLINK-27006
> URL: https://issues.apache.org/jira/browse/FLINK-27006
> Project: Flink
> Issue Type: Improvement
> Components: Table SQL / API, Table SQL / Planner
> Reporter: luoyuxia
> Assignee: luoyuxia
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.16.0
>
>
> The exception happens when I try to running the following sql with Hive
> dialect:
> {code:java}
> create table tempty(c char(2));
> select * from tempty where c = (select * from tempty) ;{code}
> the exception is "SINGLE_VALUE aggregate function doesn't support type
> 'CHAR'."
> There missing the CharType in SingleValueAggFunction, which should be
> supported.
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