viirya commented on a change in pull request #28898:
URL: https://github.com/apache/spark/pull/28898#discussion_r451209981
##########
File path:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/optimizer/NestedColumnAliasingSuite.scala
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@@ -493,6 +491,156 @@ class NestedColumnAliasingSuite extends SchemaPruningTest
{
comparePlans(optimized3, expected3)
}
+ test("Nested field pruning for Window") {
+ val spec = windowSpec($"address" :: Nil, $"id".asc :: Nil,
UnspecifiedFrame)
+ val winExpr = windowExpr(RowNumber(), spec)
+
+ val query1 = contact
+ .select($"name.first", winExpr.as('window))
+ .analyze
+ val optimized1 = Optimize.execute(query1)
+ val expected1 = contact
+ .select($"name.first", $"address", $"id")
+ .window(Seq(winExpr.as("window")), Seq($"address"), Seq($"id".asc))
+ .select($"first", $"window")
+ .analyze
+ comparePlans(optimized1, expected1)
Review comment:
Is this test pruning nested column? I don't see generated alias here.
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