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https://issues.apache.org/jira/browse/FLINK-7955?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Leonard Xu closed FLINK-7955.
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Resolution: Fixed
Fixed in FLINK-13473
> Rowtime attribute cannot be aggregated in group window of stream Table API
> --------------------------------------------------------------------------
>
> Key: FLINK-7955
> URL: https://issues.apache.org/jira/browse/FLINK-7955
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / API
> Affects Versions: 1.3.2, 1.4.0
> Reporter: Fabian Hueske
> Priority: Minor
>
> The following query fails with a {{NullPointerException}}:
> {code}
> val windowedTable = table
> .window(Tumble over 5.milli on 'rowtime as 'w)
> .groupBy('w, 'word)
> .select('word, 'rowtime.count, 'w.start, 'w.end)
> {code}
> Equivalent SQL queries or Table API queries that use a processing time
> attribute are working.
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