[jira] [Created] (FLINK-9294) Improve type inference for UDFs with composite parameter or result type

[Shang Yuanchun (Jira)]

Rong Rong created FLINK-9294:
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             Summary: Improve type inference for UDFs with composite parameter or result type
                 Key: FLINK-9294
                 URL: https://issues.apache.org/jira/browse/FLINK-9294
             Project: Flink
          Issue Type: Improvement
          Components: Table API & SQL
            Reporter: Rong Rong


For now most of the UDF function signatures that includes composite types such as `MAP` `ARRAY`, etc would require user to override `getParameterType` or `getResultType` method explicitly.

It should be able to resolve the composite type based on the function signature.



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