Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/18516#discussion_r216292172
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/complexTypeCreator.scala
---
@@ -292,14 +296,17 @@ trait CreateNamedStructLike extends Expression {
}
override def checkInputDataTypes(): TypeCheckResult = {
- if (children.size % 2 != 0) {
+ if (children.length < 1) {
+ TypeCheckResult.TypeCheckFailure(
+ s"input to function $prettyName requires at least one argument")
--- End diff --
This is not related to what this PR claims to do. What's the reason behind
this change?
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