cloud-fan commented on code in PR #48398:
URL: https://github.com/apache/spark/pull/48398#discussion_r1793640483
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sql/api/src/main/scala/org/apache/spark/sql/types/StructType.scala:
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@@ -377,6 +377,62 @@ case class StructType(fields: Array[StructField]) extends
DataType with Seq[Stru
findFieldInStruct(this, fieldNames, Nil)
}
+ /**
+ * Returns a field in this struct and its child structs, case insensitively.
This is slightly less
+ * performant than the case sensitive version.
+ *
+ * If includeCollections is true, this will return fields that are nested in
maps and arrays.
+ *
+ * @param fieldNames The path to the field, in order from the root. For
example, the column
+ * nested.a.b.c would be Seq("nested", "a", "b", "c").
+ */
+ private[spark] def findNestedFieldIgnoreCase(
Review Comment:
Looks like we can simply call the existing `findNestedField` and pass a case
insensitive resolver
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