Github user jiangxb1987 commented on a diff in the pull request: https://github.com/apache/spark/pull/18814#discussion_r131864180 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/windowExpressions.scala --- @@ -89,7 +89,11 @@ case class WindowSpecDefinition( elements.mkString("(", " ", ")") } - private def isValidFrameType(ft: DataType): Boolean = orderSpec.head.dataType == ft + private def isValidFrameType(ft: DataType): Boolean = (orderSpec.head.dataType, ft) match { + case (DateType, IntegerType) => true --- End diff -- I checked and HIVE support that, so let's also allow this.
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