Github user watermen commented on a diff in the pull request:
https://github.com/apache/spark/pull/5290#discussion_r28216651
--- 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] {
+ def apply(plan: LogicalPlan): LogicalPlan = plan transform {
+ case s @ Sort(ordering, global, a @ Aggregate(grouping, aggs, child))
+ if !s.resolved && a.resolved =>
+ val missingInAggs = new ArrayBuffer[NamedExpression]()
+ val aliasedOrdering = ordering.zipWithIndex.map{
+ case (o, i) => {
+ o.child match {
+ case aggOrSub @ (_: AggregateExpression | _: Substring) => {
--- End diff --
I have tested substring in newest version of spark.
```
SELECT value, sum(key)
FROM src
GROUP BY value
ORDER BY substr(value, 1, 5)
```
is right.
```
SELECT substr(value, 1, 5), sum(key)
FROM src
GROUP BY substr(value, 1, 5)
ORDER BY substr(value, 1, 5)
```
is wrong, and ERROR LOG is `cannot resolve 'value' given input columns _c0,
_c1; line 4 pos 16`.
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