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https://issues.apache.org/jira/browse/FLINK-18516?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Terry Wang closed FLINK-18516.
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Resolution: Works for Me
> Improve error message for rank function in streaming mode
> ---------------------------------------------------------
>
> Key: FLINK-18516
> URL: https://issues.apache.org/jira/browse/FLINK-18516
> Project: Flink
> Issue Type: Improvement
> Components: Table SQL / Planner
> Reporter: Rui Li
> Priority: Minor
> Labels: auto-deprioritized-major
>
> The following query currently fails with NPE:
> {code}
> create table foo (x int,y string,p as proctime()) with ...;
> select x,y,row_number() over (partition by x order by p) from foo;
> {code}
> which can be difficult for users to figure out the reason of the failure.
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