[jira] [Created] (FLINK-32367) lead function second param leat to ClassCastException

[zhou (Jira)]

zhou created FLINK-32367:
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             Summary: lead function second param leat to ClassCastException
                 Key: FLINK-32367
                 URL: https://issues.apache.org/jira/browse/FLINK-32367
             Project: Flink
          Issue Type: Bug
          Components: API / Core
    Affects Versions: 1.15.4
            Reporter: zhou
         Attachments: image-2023-06-16-15-49-49-003.png, 
image-2023-06-16-18-12-05-861.png

!image-2023-06-16-18-12-05-861.png!!image-2023-06-16-15-49-49-003.png!

lead function second param is expression (window_length/2),throw a exception 

if lead function second param is number,it worked well



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