viirya commented on a change in pull request #26509: [SPARK-29427][SQL] Add API
to convert RelationalGroupedDataset to KeyValueGroupedDataset
URL: https://github.com/apache/spark/pull/26509#discussion_r346053901
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File path:
sql/core/src/main/scala/org/apache/spark/sql/RelationalGroupedDataset.scala
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@@ -129,6 +132,26 @@ class RelationalGroupedDataset protected[sql](
(inputExpr: Expression) => exprToFunc(inputExpr)
}
+ def keyAs[U : Encoder]: KeyValueGroupedDataset[U, T] = {
Review comment:
I will add some api doc later.
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