Github user watermen commented on a diff in the pull request:
https://github.com/apache/spark/pull/5290#discussion_r31687776
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala
---
@@ -364,11 +364,24 @@ class Analyzer(
val (resolvedOrdering, missing) = resolveAndFindMissing(ordering,
a, groupingRelation)
- if (missing.nonEmpty) {
+ val addForAlias = new ArrayBuffer[NamedExpression]()
+ val aliasedOrdering = resolvedOrdering.zipWithIndex.map {
+ case (o, i) => {
+ o transform {
+ case aggOrSub @ (_: AggregateExpression | _: Substring) =>
--- End diff --
@cloud-fan Because `Substring` has the same problem as `Aggregation`.
I think we need to add another rule to solve your 2st commit, because
there're many sqls like `select key, sum(value), sum(value) from src group by
key` have the same problem.
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