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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-6196) Support dynamic schema in Table Function
Date Fri, 21 Apr 2017 13:04:04 GMT

    [ https://issues.apache.org/jira/browse/FLINK-6196?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15978699#comment-15978699
] 

ASF GitHub Bot commented on FLINK-6196:
---------------------------------------

Github user fhueske commented on a diff in the pull request:

    https://github.com/apache/flink/pull/3623#discussion_r112680906
  
    --- Diff: flink-libraries/flink-table/src/test/scala/org/apache/flink/table/runtime/datastream/DataStreamUserDefinedFunctionITCase.scala
---
    @@ -212,6 +212,142 @@ class DataStreamUserDefinedFunctionITCase extends StreamingMultipleProgramsTestB
         assertEquals(expected.sorted, StreamITCase.testResults.sorted)
       }
     
    +  @Test
    +  def testDynamicSchema0(): Unit = {
    --- End diff --
    
    Same as above. Would be good to convert some of these tests into unit tests.


> Support dynamic schema in Table Function
> ----------------------------------------
>
>                 Key: FLINK-6196
>                 URL: https://issues.apache.org/jira/browse/FLINK-6196
>             Project: Flink
>          Issue Type: Improvement
>          Components: Table API & SQL
>            Reporter: Zhuoluo Yang
>            Assignee: Zhuoluo Yang
>
> In many of our use cases. We have to decide the schema of a UDTF at the run time. For
example. udtf('c1, c2, c3') will generate three columns for a lateral view. 
> Most systems such as calcite and hive support this feature. However, the current implementation
of flink didn't implement the feature correctly.



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