Github user hvanhovell commented on a diff in the pull request:
https://github.com/apache/spark/pull/16168#discussion_r91078953
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/catalog/interface.scala
---
@@ -151,6 +151,7 @@ case class CatalogTable(
tableType: CatalogTableType,
storage: CatalogStorageFormat,
schema: StructType,
+ originalSchema: Option[StructType] = None,
--- End diff --
The only difference between originalSchema and schema are the column names,
right? If that is the case why not store the `source` column name in the schema
field metadata?
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