allisonwang-db commented on a change in pull request #32787:
URL: https://github.com/apache/spark/pull/32787#discussion_r647164105
##########
File path:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/analysis/AnalysisErrorSuite.scala
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@@ -791,4 +791,28 @@ class AnalysisErrorSuite extends AnalysisTest {
assertAnalysisError(plan, s"Correlated column is not allowed in
predicate ($msg)" :: Nil)
}
}
+
+ test("SPARK-35618: Resolve star expressions in subquery") {
Review comment:
Yes, currently only `Filter` can host outer references for correlated
subqueries, and star expansion only happens when the node is either a `Project`
or `Aggregate` (buildExpandedProjectList). It will be clearer with lateral
subquery examples:
```sql
// t: [a, b]
SELECT * FROM t, LATERAL (SELECT t.*) // <--- t.* should be resolved as
t.a, t.b
```
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