Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/15093#discussion_r78953757
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala
---
@@ -1658,19 +1658,14 @@ class Analyzer(
// Third, for every Window Spec, we add a Window operator and set
currentChild as the
// child of it.
var currentChild = child
- var i = 0
- while (i < groupedWindowExpressions.size) {
- val ((partitionSpec, orderSpec), windowExpressions) =
groupedWindowExpressions(i)
+ groupedWindowExpressions.foreach { case ((partitionSpec, orderSpec),
windowExpressions) =>
--- End diff --
Ah, that's clear and better. I will try. Thanks!
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