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[SPARK-7687] [SQL] DataFrame.describe() should cast all aggregates to String #6218

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JoshRosen wants to merge 4 commits into from
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[SPARK-7687] [SQL] DataFrame.describe() should cast all aggregates to String #6218

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307ecbf
Add failing regression test for SPARK-7687
JoshRosen May 17, 2015
f206580
Cast to double to fix SPARK-7687
JoshRosen May 17, 2015
2974bd5
Cast to string type instead
JoshRosen May 18, 2015
146b615
Fix R test.
JoshRosen May 18, 2015
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Cast to double to fix SPARK-7687
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@JoshRosen
JoshRosen committed May 18, 2015
commit f2065809cace506d84daaca7a8fc466742103e99
2 changes: 1 addition & 1 deletion sql/core/src/main/scala/org/apache/spark/sql/DataFrame.scala
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Expand Up @@ -1063,7 +1063,7 @@ class DataFrame private[sql](

val ret: Seq[Row] = if (outputCols.nonEmpty) {
val aggExprs = statistics.flatMap { case (_, colToAgg) =>
outputCols.map(c => Column(colToAgg(Column(c).expr)).as(c))
outputCols.map(c => Column(Cast(colToAgg(Column(c).expr), DoubleType)).as(c))
}

val row = agg(aggExprs.head, aggExprs.tail: _*).head().toSeq
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