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[SQL] [Minor] added check analysis rule for union node #6174

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[SQL] [Minor] added check analysis rule for union node #6174

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6541ec4
added union check rule
scwf May 15, 2015
cf1475a
Update CheckAnalysis.scala
scwf May 15, 2015
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6 changes: 6 additions & 0 deletions sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/CheckAnalysis.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -105,6 +105,12 @@ trait CheckAnalysis {

cleaned.foreach(checkValidAggregateExpression)

case u @ Union(left, right) if left.output.size != right.output.size =>
failAnalysis(
s"union's left child and right child have different output size. " +
s"union node: $u left output size: ${left.output.size}, " +
s"right output size: ${right.output.size}")

case _ => // Fallbacks to the following checks
}

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