beliefer commented on a change in pull request #30387: URL: https://github.com/apache/spark/pull/30387#discussion_r545000493
########## File path: sql/core/src/test/scala/org/apache/spark/sql/DataFrameWindowFunctionsSuite.scala ########## @@ -700,6 +700,44 @@ class DataFrameWindowFunctionsSuite extends QueryTest Row("b", 3, null, null, null))) } + test("lead/lag with ignoreNulls") { + val nullStr: String = null + val df = Seq( + ("a", 0, nullStr), + ("a", 1, "x"), + ("a", 2, "y"), + ("a", 3, "z"), + ("a", 4, nullStr), + ("b", 1, nullStr), + ("b", 2, nullStr)). + toDF("key", "order", "value") + val window = Window.orderBy($"order") + checkAnswer( + df.select( + $"key", + $"value", + $"order", + lead($"value", 1).over(window), Review comment: The current implement of dsl only accept column. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org