Github user twalthr commented on a diff in the pull request: https://github.com/apache/flink/pull/2870#discussion_r103963098 --- Diff: flink-libraries/flink-table/src/main/scala/org/apache/flink/api/table/codegen/calls/ScalarOperators.scala --- @@ -79,6 +79,72 @@ object ScalarOperators { } } + def generateIn( + nullCheck: Boolean, + left: GeneratedExpression, + right: scala.collection.mutable.Buffer[GeneratedExpression], + addReusableCodeCallback: (String, String) => Any) + : GeneratedExpression = { + val resultTerm = newName("result") + val isNull = newName("isNull") + + val topNumericalType: Option[TypeInformation[_]] = { --- End diff -- IMHO, calculating the top numerical type seems not too specific to me.
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