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https://issues.apache.org/jira/browse/SPARK-11637?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15003536#comment-15003536
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Xiao Li commented on SPARK-11637:
---------------------------------
https://github.com/apache/spark/pull/9343 has already fixed the problem. You
can verify your issue using the latest master build or the nearly released 1.6
build.
> Alias do not work with udf with * parameter
> -------------------------------------------
>
> Key: SPARK-11637
> URL: https://issues.apache.org/jira/browse/SPARK-11637
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 1.5.0, 1.5.1, 1.5.2
> Reporter: Pierre Borckmans
>
> In Spark < 1.5.0, this used to work :
> {code:java|title=Spark <1.5.0|borderStyle=solid}
> scala> sqlContext.sql("select hash(*) as x from T")
> res2: org.apache.spark.sql.DataFrame = [x: int]
> {code}
> From Spark 1.5.0+, it fails:
> {code:java|title=Spark>=1.5.0|borderStyle=solid}
> scala> sqlContext.sql("select hash(*) as x from T")
> org.apache.spark.sql.AnalysisException: unresolved operator 'Project
> ['hash(*) AS x#1];
> at
> org.apache.spark.sql.catalyst.analysis.CheckAnalysis$class.failAnalysis(CheckAnalysis.scala:37)
> at
> org.apache.spark.sql.catalyst.analysis.Analyzer.failAnalysis(Analyzer.scala:44)
> at
> org.apache.spark.sql.catalyst.analysis.CheckAnalysis$$anonfun$checkAnalysis$1.apply(CheckAnalysis.scala:174)
> at
> org.apache.spark.sql.catalyst.analysis.CheckAnalysis$$anonfun$checkAnalysis$1.apply(CheckAnalysis.scala:49)
> at
> org.apache.spark.sql.catalyst.trees.TreeNode.foreachUp(TreeNode.scala:103)
> ...
> {code}
> This is not specific to the `hash` udf. It also applies to user defined
> functions.
> The `*` seems to be the issue.
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