ueshin commented on a change in pull request #32424:
URL: https://github.com/apache/spark/pull/32424#discussion_r626001928
##########
File path:
sql/core/src/test/scala/org/apache/spark/sql/DataFrameFunctionsSuite.scala
##########
@@ -3629,6 +3629,29 @@ class DataFrameFunctionsSuite extends QueryTest with
SharedSparkSession {
df.select(map(map_entries($"m"), lit(1))),
Row(Map(Seq(Row(1, "a")) -> 1)))
}
+
+ test("SPARK-34794: lambda variable name issues in nested functions") {
+ val df1 = Seq((Seq(1, 2), Seq("a", "b"))).toDF("numbers", "letters")
+
+ checkAnswer(df1.select(flatten(transform($"numbers", (number: Column) =>
+ transform($"letters", (letter: Column) =>
+ struct(number, letter))))),
+ Seq(Row(Seq(Row(1, "a"), Row(1, "b"), Row(2, "a"), Row(2, "b"))))
Review comment:
nit: style. should be 2-space indent?
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