dongjoon-hyun commented on a change in pull request #23867: [SPARK-26965][SQL]
Makes ElementAt nullability more precise
URL: https://github.com/apache/spark/pull/23867#discussion_r261481545
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File path:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/CollectionExpressionsSuite.scala
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@@ -1092,6 +1092,58 @@ class CollectionExpressionsSuite extends SparkFunSuite
with ExpressionEvalHelper
checkEvaluation(ElementAt(mb0, Literal(Array[Byte](3, 4))), null)
}
+ test("SPARK-26965 correctly handles ElementAt nullability for arrays") {
Review comment:
Yes. I've heard the rule from @cloud-fan in my old PRs.
I'm not sure if that is a written rule or not.
Hi, @cloud-fan . Do we have some URLs for the above `SPARK JIRA ID` usage
rule in the test case name?
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