Github user jaceklaskowski commented on a diff in the pull request:
https://github.com/apache/spark/pull/22316#discussion_r214752855
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/RelationalGroupedDataset.scala ---
@@ -416,7 +426,7 @@ class RelationalGroupedDataset protected[sql](
new RelationalGroupedDataset(
df,
groupingExprs,
- RelationalGroupedDataset.PivotType(pivotColumn.expr,
values.map(Literal.apply)))
+ RelationalGroupedDataset.PivotType(pivotColumn.expr,
values.map(lit(_).expr)))
--- End diff --
What do you think about `map(lit).map(_.expr)` instead?
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