Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/15417#discussion_r84836930
--- Diff:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/analysis/ResolveNaturalJoinSuite.scala
---
@@ -31,39 +31,46 @@ class ResolveNaturalJoinSuite extends AnalysisTest {
lazy val aNotNull = a.notNull
lazy val bNotNull = b.notNull
lazy val cNotNull = c.notNull
+ lazy val aNew = newAttribute(a)
+ lazy val bNotNullNew = newAttribute(bNotNull)
lazy val r1 = LocalRelation(b, a)
lazy val r2 = LocalRelation(c, a)
lazy val r3 = LocalRelation(aNotNull, bNotNull)
lazy val r4 = LocalRelation(cNotNull, bNotNull)
+ lazy val r2New = LocalRelation(c, aNew)
+ lazy val r4New = LocalRelation(cNotNull, bNotNullNew)
+
+ private def newAttribute(a: AttributeReference): Attribute =
--- End diff --
`newAttribute` -> `deDuplicatedAttribute`
---
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