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https://issues.apache.org/jira/browse/FLINK-6196?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15960727#comment-15960727
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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_r110378068
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/functions/utils/UserDefinedFunctionUtils.scala
---
@@ -382,7 +381,10 @@ object UserDefinedFunctionUtils {
implicitResultType: TypeInformation[_],
params: Expression*): TableFunctionCall = {
val arguments = transformLiteralExpressions(params: _*)
- val userDefinedResultType = tableFunction.getResultType(arguments)
+ val typeInformations = params.map { param =>
+ if (param.valid) param.resultType else null
--- End diff --
I think if the parameter cannot be validated, we do not need to continue
here because translation would later fail.
> 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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