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[SPARK-31975][SQL] Show AnalysisException when WindowFunction is used without WindowExpression #28808

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[SPARK-31975][SQL] Show AnalysisException when WindowFunction is used without WindowExpression #28808

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f283385
init
ulysses-you Jun 12, 2020
38df40a
typo
ulysses-you Jun 12, 2020
cd8bbb2
update msg
ulysses-you Jun 12, 2020
335935f
typo
ulysses-you Jun 13, 2020
458d457
Merge branch 'master' of https://github.com/apache/spark into SPARK-3…
ulysses-you Jul 2, 2020
972ae13
nit
ulysses-you Jul 2, 2020
0798fca
check all expression
ulysses-you Jul 3, 2020
3e116f5
nit
ulysses-you Jul 4, 2020
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5 changes: 5 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 @@ -158,6 +158,11 @@ trait CheckAnalysis extends PredicateHelper {
case g: GroupingID =>
failAnalysis("grouping_id() can only be used with GroupingSets/Cube/Rollup")

case e: Expression if e.children.exists(_.isInstanceOf[WindowFunction]) &&
!e.isInstanceOf[WindowExpression] =>
val w = e.children.find(_.isInstanceOf[WindowFunction]).get
failAnalysis(s"Window function $w requires an OVER clause.")

case w @ WindowExpression(AggregateExpression(_, _, true, _, _), _) =>
failAnalysis(s"Distinct window functions are not supported: $w")

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11 changes: 11 additions & 0 deletions sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/analysis/AnalysisSuite.scala
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Expand Up @@ -884,4 +884,15 @@ class AnalysisSuite extends AnalysisTest with Matchers {
Seq("Intersect can only be performed on tables with the compatible column types. " +
"timestamp <> double at the second column of the second table"))
}

test("SPARK-31975: Throw user facing error when use WindowFunction directly") {
assertAnalysisError(testRelation2.select(RowNumber()),
Seq("Window function row_number() requires an OVER clause."))

assertAnalysisError(testRelation2.select(Sum(RowNumber())),
Seq("Window function row_number() requires an OVER clause."))

assertAnalysisError(testRelation2.select(RowNumber() + 1),
Seq("Window function row_number() requires an OVER clause."))
}
}