cloud-fan commented on code in PR #44645:
URL: https://github.com/apache/spark/pull/44645#discussion_r1448869794
##########
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/optimizer/RemoveRedundantAliasAndProjectSuite.scala:
##########
@@ -130,4 +131,63 @@ class RemoveRedundantAliasAndProjectSuite extends PlanTest
{
correlated = false)
comparePlans(optimized, expected)
}
+
+ test("SPARK-46640: do not remove outer references from a subquery
expression") {
+ val a = AttributeReference("a", IntegerType)() // a#0
Review Comment:
let's follow the existing code style in this suite: `$"a".int`
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