Github user davies commented on a diff in the pull request:
https://github.com/apache/spark/pull/11198#discussion_r52861656
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala
---
@@ -655,6 +655,8 @@ class Analyzer(
resolved
} else {
plan match {
+ case g: Generate =>
+ if (g.join) resolveExpressionRecursively(resolved, g.child)
else resolved
--- End diff --
The `join` is not specified by user explicitly. If we allow `sort` refer to
the column that is not in project list, I think we should also allow it even
`join` is false, it means we need to change `join` from `false` to `true` to
make it works.
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