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https://issues.apache.org/jira/browse/FLINK-6196?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15974177#comment-15974177
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ASF GitHub Bot commented on FLINK-6196:
---------------------------------------

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

    https://github.com/apache/flink/pull/3623#discussion_r112126252
  
    --- Diff: 
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/functions/TableFunction.scala
 ---
    @@ -135,8 +135,11 @@ abstract class TableFunction[T] extends 
UserDefinedFunction {
         *
         * @param arguments arguments of a function call (only literal arguments
         *                  are passed, nulls for non-literal ones)
    +    * @param typeInfos The type information of the parameters. only valid 
argument types
    --- End diff --
    
    Yes, I think we should resolve the expressions one more time to get all the 
TypeInformations.


> 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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