Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/3673#discussion_r113663948
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/codegen/generated.scala
---
@@ -35,7 +35,11 @@ case class GeneratedExpression(
resultTerm: String,
nullTerm: String,
code: String,
- resultType: TypeInformation[_])
+ resultType: TypeInformation[_]) {
+
+ var leftNullTerm: String = _
--- End diff --
I don't think we need these attributes.
We can check with `${codeGenerator.input1Term} == null` whether an input
record is null.
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