[GitHub] [spark] rdblue commented on a change in pull request #25568: [SPARK-28238][SQL][FOLLOW-UP] Clean up attributes for Datasource v2 DESCRIBE TABLE

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rdblue commented on a change in pull request #25568: [SPARK-28238][SQL][FOLLOW-UP] Clean up attributes for Datasource v2 DESCRIBE TABLE
URL: https://github.com/apache/spark/pull/25568#discussion_r317249041
 
 

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 File path: sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/DataSourceV2Strategy.scala
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 @@ -260,16 +260,16 @@ object DataSourceV2Strategy extends Strategy with PredicateHelper {
         Nil
       }
 
-    case DescribeTable(r: DataSourceV2Relation, isExtended) =>
-      DescribeTableExec(r.table, isExtended) :: Nil
+    case r @ DescribeTable(datasource: DataSourceV2Relation, isExtended) =>
+      DescribeTableExec(r.output, datasource.table, isExtended) :: Nil
 
 Review comment:
   Nit: I'd prefer leaving the relation as `r` and using a better name for the `DescribeTable` node, like `desc`.

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