Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/3623#discussion_r110377050
--- 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 --
We should be able to pass the TypeInformation of all fields, because we
know which `eval` method to call.
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