snuyanzin commented on code in PR #28316:
URL: https://github.com/apache/flink/pull/28316#discussion_r3488040932


##########
flink-table/flink-table-planner/src/main/scala/org/apache/flink/table/planner/codegen/ExprCodeGenerator.scala:
##########
@@ -1026,4 +1026,9 @@ class ExprCodeGenerator(
     ShortcutUtils.isDeterministicThroughProgram(
       node,
       CodeGenUtils.getExprsFromProgramOrNull(rexProgram))
+
+  override def visitNodeAndFieldIndex(

Review Comment:
   in Calcite 1.41.0 there was started activity about implementation of DPhyp 
algorithm for decorrelation, this is part of its implementation. However 
significant part and fixes appeared in 1.42.0
   May be need to add support in Flink after upgrade to 1.42.
   https://issues.apache.org/jira/browse/CALCITE-7029



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