mihaibudiu commented on code in PR #4998:
URL: https://github.com/apache/calcite/pull/4998#discussion_r3399095013
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core/src/main/java/org/apache/calcite/sql2rel/RelDecorrelator.java:
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@@ -2629,6 +2630,55 @@ private RexNode createCaseExpression(
return literal;
}
+ @Override public RexNode visitOver(RexOver over) {
+ // Collect correlation fields that are referenced directly by the window
+ // expression. They need to be added to the window partition keys so that
+ // decorrelation does not widen the window computation scope.
Review Comment:
Could you show here a plan fragment before and after the rewrite?
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