cloud-fan commented on code in PR #40116:
URL: https://github.com/apache/spark/pull/40116#discussion_r1139884033
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sql/core/src/main/scala/org/apache/spark/sql/RelationalGroupedDataset.scala:
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@@ -89,9 +89,22 @@ class RelationalGroupedDataset protected[sql](
case expr: NamedExpression => expr
case a: AggregateExpression if
a.aggregateFunction.isInstanceOf[TypedAggregateExpression] =>
UnresolvedAlias(a, Some(Column.generateAlias))
- case expr: Expression => Alias(expr, toPrettySQL(expr))()
+ case ag: UnresolvedFunction if (containsStar(Seq(ag))) || ag.isDistinct =>
+ UnresolvedAlias(expr, None)
+ case expr: Expression =>
+ if (containsStar(Seq(expr))) {
+ UnresolvedAlias(expr, None)
+ } else {
+ Alias(expr, toPrettySQL(expr))()
Review Comment:
If we want a surgical fix, shall we fix how `toPrettySQL` handles star?
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