Github user yhuai commented on a diff in the pull request:
https://github.com/apache/spark/pull/14284#discussion_r71598723
--- Diff:
sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/SQLWindowFunctionSuite.scala
---
@@ -367,4 +367,50 @@ class SQLWindowFunctionSuite extends QueryTest with
SQLTestUtils with TestHiveSi
| select * from v2 order by key limit 1
""".stripMargin), Row(0, 3))
}
+
+ test("lead/lag should return the default value if the offset row does
not exist") {
--- End diff --
Done
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