Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/10731#discussion_r56454667
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala
---
@@ -497,6 +498,41 @@ class Analyzer(
ordering.map(order => resolveExpression(order,
child).asInstanceOf[SortOrder])
Sort(newOrdering, global, child)
+ // Replace the index with the related attribute for ORDER BY
+ // which is a 1-base position of the projection list.
+ case s @ Sort(orders, global, child) if child.resolved &&
+ orders.exists(o => IntegerIndex.unapply(o.child).nonEmpty) =>
+ val newOrders = orders map {
+ case s @ SortOrder(IntegerIndex(index), direction) =>
+ if (index > 0 && index <= child.output.size) {
+ SortOrder(child.output(index - 1), direction)
+ } else {
+ throw new UnresolvedException(s,
+ s"""Order by position: $index does not exist \n
+ |The Select List is indexed from 1 to
${child.output.size}""".stripMargin)
+ }
+ case other => other
+ }
+ Sort(newOrders, global, child)
+
+ // Replace the index with the related attribute for Group BY
+ // which is a 1-base position of the underlying columns.
+ case a @ Aggregate(groups, aggs, child) if child.resolved &&
+ groups.exists(IntegerIndex.unapply(_).nonEmpty) =>
+ val newGroups = groups map {
+ case IntegerIndex(index) =>
+ val attributes = child.output
--- End diff --
I'm not sure if this is correct. 1 and 2 in the group by here refers to the
position 1 and 2 in the select list, not the underlying query output.
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