Sean Zhong created SPARK-16853:
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Summary: Analysis error for DataSet typed selection
Key: SPARK-16853
URL: https://issues.apache.org/jira/browse/SPARK-16853
Project: Spark
Issue Type: Bug
Reporter: Sean Zhong
For DataSet typed selection
{code}
def select[U1: Encoder](c1: TypedColumn[T, U1]): Dataset[U1]
{code}
If U1 contains sub-fields, then it reports AnalysisException
Reproducer:
{code}
scala> case class A(a: Int, b: Int)
scala> Seq((0, A(1,2))).toDS.select($"_2".as[A])
org.apache.spark.sql.AnalysisException: cannot resolve '`a`' given input
columns: [_2];
at
org.apache.spark.sql.catalyst.analysis.package$AnalysisErrorAt.failAnalysis(package.scala:42)
at
...
{code}
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