viirya commented on a change in pull request #33227:
URL: https://github.com/apache/spark/pull/33227#discussion_r664682408
##########
File path:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/optimizer/NestedColumnAliasingSuite.scala
##########
@@ -684,6 +684,31 @@ class NestedColumnAliasingSuite extends SchemaPruningTest {
).analyze
comparePlans(optimized2, expected2)
}
+
+ test("SPARK-35972: NestedColumnAliasing should consider semantic equality") {
+ val dataType = new StructType()
+ .add(StructField("itemid", StringType))
+ .add(StructField("search_params", StructType(Seq(
+ StructField("col1", StringType),
+ StructField("col2", StringType)
+ ))))
+ val relation = LocalRelation('struct_data.struct(dataType))
+ val plan = relation
+ .repartition(100)
+ .select(
+ GetStructField('struct_data, 1, None).as("value"),
+ $"struct_data.search_params.col1".as("col1"),
+ $"struct_data.search_params.col2".as("col2")).analyze
+ val query = Optimize.execute(plan)
+ val optimized = relation
+ .select(GetStructField('struct_data, 1,
None).as("_extract_search_params"))
+ .repartition(100)
+ .select(
+ $"_extract_search_params".as("value"),
+ $"_extract_search_params.col1".as("col1"),
+ $"_extract_search_params.col2".as("col2")).analyze
Review comment:
You can use `collectGeneratedAliases`.
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