[jira] [Created] (FLINK-6334) Refactoring UDTF interface

[Shang Yuanchun (Jira)]

Ruidong Li created FLINK-6334:
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             Summary: Refactoring UDTF interface
                 Key: FLINK-6334
                 URL: https://issues.apache.org/jira/browse/FLINK-6334
             Project: Flink
          Issue Type: Improvement
          Components: Table API & SQL
            Reporter: Ruidong Li


UDTF's apply method returns a Table Type, so Join(UDTF('a, 'b, ...) as 'c) shall be viewed as join(Table)



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