beliefer commented on code in PR #35975:
URL: https://github.com/apache/spark/pull/35975#discussion_r848142929
##########
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/basicLogicalOperators.scala:
##########
@@ -1256,6 +1273,25 @@ case class LocalLimit(limitExpr: Expression, child:
LogicalPlan) extends OrderPr
copy(child = newChild)
}
+/**
+ * A global (coordinated) limit with offset. This operator can skip at most
`offsetExpr` number and
+ * emit at most `limitExpr` number in total.
+ */
+case class GlobalLimitAndOffset(
+ limitExpr: Expression,
+ offsetExpr: Expression,
+ child: LogicalPlan) extends OrderPreservingUnaryNode {
+ override def output: Seq[Attribute] = child.output
+ override def maxRows: Option[Long] = {
+ limitExpr match {
+ case IntegerLiteral(limit) => Some(limit)
+ case _ => None
Review Comment:
Yes. But this is good for Scala's pattern match.
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