[jira] [Created] (FLINK-39943) IS [NOT ]JSON changed nullability after upgrade to Calcite 1.38.0

[Sergey Nuyanzin (Jira)]

Sergey Nuyanzin created FLINK-39943:
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             Summary: IS [NOT ]JSON changed nullability after upgrade to 
Calcite 1.38.0
                 Key: FLINK-39943
                 URL: https://issues.apache.org/jira/browse/FLINK-39943
             Project: Flink
          Issue Type: Technical Debt
          Components: Table SQL / Planner
            Reporter: Sergey Nuyanzin


For now new behavior is disabled however probably need to do some investigation 
and support it as it is more like a SQL way to return {{NULL}} if input is 
{{NULL}}



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