peter-toth commented on code in PR #45343: URL: https://github.com/apache/spark/pull/45343#discussion_r1520049076
########## sql/core/src/test/scala/org/apache/spark/sql/DataFrameSelfJoinSuite.scala: ########## @@ -498,4 +559,70 @@ class DataFrameSelfJoinSuite extends QueryTest with SharedSparkSession { assert(df1.join(df2, $"t1.i" === $"t2.i").cache().count() == 1) } } + + test("SPARK_47217: deduplication of project causes ambiguity in resolution") { + val df = Seq((1, 2)).toDF("a", "b") + val df2 = df.select(df("a").as("aa"), df("b").as("bb")) + val df3 = df2.join(df, df2("bb") === df("b")).select(df2("aa"), df("a")) + checkAnswer( + df3, + Row(1, 1) :: Nil) + } + + test("SPARK-47217. deduplication in nested joins with join attribute aliased") { Review Comment: Can you please use `:` instead of `.` in test names? -- 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. To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org 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