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From scwf <...@git.apache.org>
Subject [GitHub] spark pull request: [SPARK-5383][SQL] Support alias for udtfs
Date Fri, 30 Jan 2015 03:49:01 GMT
Github user scwf commented on the pull request:

    https://github.com/apache/spark/pull/4186#issuecomment-72150031
  
    Hey, @chenghao-intel, I think we can not  eliminate the `MultiAlias` since Generator (UDTF)
is not namedExpression which will leads to java.lang.ClassCastException: org.apache.spark.sql.hive.HiveGenericUdtf
cannot be cast to org.apache.spark.sql.catalyst.expressions.NamedExpression
    
    Project require the projectList must be NamedExpression.
    



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