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https://issues.apache.org/jira/browse/FLINK-9294?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rong Rong reassigned FLINK-9294:
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Assignee: Rong Rong
> 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
> Assignee: Rong Rong
> Priority: Major
>
> 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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