shrirangmhalgi commented on code in PR #55892:
URL: https://github.com/apache/spark/pull/55892#discussion_r3284557213
##########
sql/core/src/test/scala/org/apache/spark/sql/GeneratorFunctionSuite.scala:
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@@ -765,6 +765,37 @@ class GeneratorFunctionSuite extends SharedSparkSession {
Seq(Row(0, 10, 0, 10), Row(1, 20, 1, 20))
)
}
+
+ test("SPARK-48091: explode with transform should preserve struct field
aliases") {
+ val df = spark.createDataFrame(Seq((1, Array(1, 2, 3), Array(4, 5, 6))))
+ .toDF("id", "my_array", "my_array2")
+
+ // Without explode - aliases should work (baseline)
+ val good = df.select(
+ transform(col("my_array2"), x => struct(x.as("data"))).as("my_struct")
+ )
+ assert(good.schema("my_struct").dataType.asInstanceOf[types.ArrayType]
Review Comment:
Addressed this in the followup commit
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