aokolnychyi commented on code in PR #56619:
URL: https://github.com/apache/spark/pull/56619#discussion_r3464895582
##########
sql/catalyst/src/main/scala/org/apache/spark/sql/util/SchemaUtils.scala:
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@@ -522,6 +534,39 @@ private[spark] object SchemaUtils {
fields.map(field => field.name.toLowerCase(Locale.ROOT) -> field).toMap
}
}
+
+ /**
+ * Recursively removes field IDs from a data type. Only allocates new
objects when a field ID
+ * is actually present, returning the original instance unchanged when there
is nothing to strip.
+ */
+ def removeFieldIds(dataType: DataType): DataType = dataType match {
+ case s: StructType =>
+ StructType(s.fields.map { field =>
Review Comment:
I relaxed the comment.
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