viirya commented on code in PR #48190:
URL: https://github.com/apache/spark/pull/48190#discussion_r1772330757
##########
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/optimizer/OptimizeJsonExprsSuite.scala:
##########
@@ -307,4 +307,21 @@ class OptimizeJsonExprsSuite extends PlanTest with
ExpressionEvalHelper {
comparePlans(optimized, query.analyze)
}
}
+
+ test("SPARK-49743: prune unnecessary columns from GetArrayStructFields does
not change schema") {
+ val options = Map.empty[String, String]
+ val schema1 = ArrayType(StructType.fromDDL("a int, b int"), containsNull =
true)
+
+ val field1 = StructField("A", IntegerType) // Instead of "a", use "A" to
test case sensitivity.
+ val query1 = testRelation2
+ .select(GetArrayStructFields(
+ JsonToStructs(schema1, options, $"json"), field1, 0, 2, true).as("a"))
+ val optimized1 = Optimizer.execute(query1.analyze)
+
+ val prunedSchema1 = ArrayType(StructType.fromDDL("a int"), containsNull =
true)
+ val expected1 = testRelation2
Review Comment:
ditto
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