Github user clarkyzl commented on a diff in the pull request:
https://github.com/apache/flink/pull/3389#discussion_r102632219
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/codegen/calls/ScalarFunctionCallGen.scala
---
@@ -48,10 +48,16 @@ class ScalarFunctionCallGen(
.getOrElse(throw new CodeGenException("No matching signature
found."))
val resultClass = getResultTypeClass(scalarFunction, matchingSignature)
+ // zip for variable signatures
+ var paramToOperands = matchingSignature.zip(operands)
+ var i = paramToOperands.length
+ while (i < operands.length) {
+ paramToOperands = paramToOperands :+ (matchingSignature.head,
operands(i))
--- End diff --
I will try to use `getComponentType()`
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