Github user watermen commented on a diff in the pull request:
https://github.com/apache/spark/pull/5290#discussion_r28302489
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala
---
@@ -379,6 +381,33 @@ class Analyzer(catalog: Catalog,
}
}
+ object ResolveSortAlias extends Rule[LogicalPlan] {
--- End diff --
Because `ResolveSortReferences` is used to fix the case `In many dialects
of SQL it is valid to sort by attributes that are not present in the SELECT *
clause.`, and
```
SELECT sum(key)
FROM src
GROUP BY value
ORDER BY sum(key)
```
is not this case, but it's error.
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