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[SPARK-23917][SQL] Add array_max function #21024

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mgaido91 wants to merge 10 commits into from
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[SPARK-23917][SQL] Add array_max function #21024

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93c5b8a
[SPARK-23917][SQL] Add array_max function
mgaido91 Apr 10, 2018
a296bc0
fix scalastyle
mgaido91 Apr 10, 2018
c8c1d03
add missing space
mgaido91 Apr 10, 2018
d017ccf
add orderable type check
mgaido91 Apr 10, 2018
e082f00
fix indentation
mgaido91 Apr 10, 2018
a4fd616
address comment
mgaido91 Apr 12, 2018
a78c752
Merge branch 'master' of github.com:apache/spark into SPARK-23917
mgaido91 Apr 12, 2018
8dfd263
update after codegen changes
mgaido91 Apr 12, 2018
e739a0a
fix nullable
mgaido91 Apr 12, 2018
1cde795
address comment
mgaido91 Apr 13, 2018
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@mgaido91
mgaido91 authored Apr 12, 2018
commit a4fd6165227a148956368c2c8e86c99aac1267b5
2 changes: 0 additions & 2 deletions ...alyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/collectionOperations.scala
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Expand Up @@ -304,8 +304,6 @@ case class ArrayMax(child: Expression) extends UnaryExpression with ImplicitCast
override def nullable: Boolean =
child.nullable || child.dataType.asInstanceOf[ArrayType].containsNull
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@ueshin ueshin Apr 12, 2018

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This should always be true because the array might be empty?


override def foldable: Boolean = child.foldable

override def inputTypes: Seq[AbstractDataType] = Seq(ArrayType)

private lazy val ordering = TypeUtils.getInterpretedOrdering(dataType)
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