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Posted to dev@flink.apache.org by "Rui Li (Jira)" <ji...@apache.org> on 2020/07/07 08:36:00 UTC

[jira] [Created] (FLINK-18516) Improve error message for rank function in streaming mode

Rui Li created FLINK-18516:
------------------------------

             Summary: 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


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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