diff --git a/dbcon/execplan/aggregatecolumn.cpp b/dbcon/execplan/aggregatecolumn.cpp
index fa3428b25..db8e9e2f6 100644
--- a/dbcon/execplan/aggregatecolumn.cpp
+++ b/dbcon/execplan/aggregatecolumn.cpp
@@ -83,18 +83,6 @@ void getAggCols(execplan::ParseTree* n, void* obj)
   }
 }
 
-const std::vector<SimpleColumn*>& getSCsFromRCForExtended(const SRCP& srcp)
-{
-  srcp->setSimpleColumnListExtended();
-  return srcp->simpleColumnListExtended();
-}
-
-const std::vector<SimpleColumn*>& getSCsFromRC(const SRCP& srcp)
-{
-  srcp->setSimpleColumnList();
-  return srcp->simpleColumnList();
-}
-
 /**
  * Constructors/Destructors
  */
@@ -141,36 +129,18 @@ AggregateColumn::AggregateColumn(const AggregateColumn& rhs, const uint32_t sess
 void AggregateColumn::setSimpleColumnList()
 {
   fSimpleColumnList.clear();
-  return setSimpleColumnList_(false);
-}
 
-void AggregateColumn::setSimpleColumnListExtended()
-{
-  fSimpleColumnListExtended.clear();
-  return setSimpleColumnList_(true);
-}
-
-void AggregateColumn::setSimpleColumnList_(const bool extractSCsfromAggCol)
-{
   for (const auto& parm : aggParms())
   {
     if (!parm)
       continue;
-
-    auto aggParmsAsSCVec = (extractSCsfromAggCol) ? getSCsFromRCForExtended(parm) : getSCsFromRC(parm);
-
-    for (auto* sc : aggParmsAsSCVec)
+    
+    parm->setSimpleColumnList();
+    for (auto* sc : parm->simpleColumnList())
     {
       if (sc)
       {
-        if (extractSCsfromAggCol)
-        {
-          fSimpleColumnListExtended.push_back(sc);
-        }
-        else
-        {
-          fSimpleColumnList.push_back(sc);
-        }
+        fSimpleColumnList.push_back(sc);
       }
     }
   }
diff --git a/dbcon/execplan/aggregatecolumn.h b/dbcon/execplan/aggregatecolumn.h
index d24e75119..10d238840 100644
--- a/dbcon/execplan/aggregatecolumn.h
+++ b/dbcon/execplan/aggregatecolumn.h
@@ -161,9 +161,7 @@ class AggregateColumn : public ReturnedColumn
     fAggParms = parms;
   }
 
-  void setSimpleColumnList_(const bool extractSCsfromAggCol);
   void setSimpleColumnList() override;
-  void setSimpleColumnListExtended() override;
 
   /** return a copy of this pointer
    *
diff --git a/dbcon/execplan/arithmeticcolumn.cpp b/dbcon/execplan/arithmeticcolumn.cpp
index b460cd634..be5a5f5e5 100644
--- a/dbcon/execplan/arithmeticcolumn.cpp
+++ b/dbcon/execplan/arithmeticcolumn.cpp
@@ -447,12 +447,6 @@ void ArithmeticColumn::setSimpleColumnList()
   fExpression->walk(getSimpleCols, &fSimpleColumnList);
 }
 
-void ArithmeticColumn::setSimpleColumnListExtended()
-{
-  fSimpleColumnListExtended.clear();
-  fExpression->walk(getSimpleColsExtended, &fSimpleColumnListExtended);
-}
-
 std::optional<CalpontSystemCatalog::TableAliasName> ArithmeticColumn::singleTable()
 {
   setSimpleColumnList();
diff --git a/dbcon/execplan/arithmeticcolumn.h b/dbcon/execplan/arithmeticcolumn.h
index 979b9ce68..248962084 100644
--- a/dbcon/execplan/arithmeticcolumn.h
+++ b/dbcon/execplan/arithmeticcolumn.h
@@ -169,10 +169,12 @@ class ArithmeticColumn : public ReturnedColumn
 
   void setDerivedTable() override;
   void replaceRealCol(std::vector<SRCP>&) override;
+  const std::vector<SimpleColumn*>& simpleColumnList() const override
+  {
+    return fSimpleColumnList;
+  }
   void setSimpleColumnList() override;
 
-  void setSimpleColumnListExtended() override;
-
   /**
    * Return the table that the column arguments belong to.
    *
diff --git a/dbcon/execplan/constantfilter.cpp b/dbcon/execplan/constantfilter.cpp
index a58ce0d16..e3bf5d623 100644
--- a/dbcon/execplan/constantfilter.cpp
+++ b/dbcon/execplan/constantfilter.cpp
@@ -331,22 +331,4 @@ void ConstantFilter::setSimpleColumnList()
   }
 }
 
-const std::vector<SimpleColumn*>& ConstantFilter::simpleColumnListExtended()
-{
-  return fSimpleColumnListExtended;
-}
-
-void ConstantFilter::setSimpleColumnListExtended()
-{
-  fSimpleColumnListExtended.clear();
-
-  for (uint32_t i = 0; i < fFilterList.size(); i++)
-  {
-    fFilterList[i]->setSimpleColumnListExtended();
-    fSimpleColumnListExtended.insert(fSimpleColumnListExtended.end(),
-                                     fFilterList[i]->simpleColumnListExtended().begin(),
-                                     fFilterList[i]->simpleColumnListExtended().end());
-  }
-}
-
 }  // namespace execplan
diff --git a/dbcon/execplan/constantfilter.h b/dbcon/execplan/constantfilter.h
index 5d0e238d2..0174604f0 100644
--- a/dbcon/execplan/constantfilter.h
+++ b/dbcon/execplan/constantfilter.h
@@ -202,10 +202,8 @@ class ConstantFilter : public Filter
 
   // get all simple columns involved in this column
   const std::vector<SimpleColumn*>& simpleColumnList();
-  const std::vector<SimpleColumn*>& simpleColumnListExtended();
   // walk through the constant filter operands to re-populate fSimpleColumnList
   void setSimpleColumnList();
-  void setSimpleColumnListExtended();
 
   // get all aggregate columns involved in this column
   const std::vector<AggregateColumn*>& aggColumnList() const
@@ -215,7 +213,6 @@ class ConstantFilter : public Filter
 
  private:
   std::vector<SimpleColumn*> fSimpleColumnList;
-  std::vector<SimpleColumn*> fSimpleColumnListExtended{};
   std::vector<AggregateColumn*> fAggColumnList;
   std::vector<WindowFunctionColumn*> fWindowFunctionColumnList;
 };
diff --git a/dbcon/execplan/functioncolumn.cpp b/dbcon/execplan/functioncolumn.cpp
index 7f10e0193..0ceb141e4 100644
--- a/dbcon/execplan/functioncolumn.cpp
+++ b/dbcon/execplan/functioncolumn.cpp
@@ -46,6 +46,7 @@ using namespace boost;
 #include "functor_str.h"
 using namespace funcexp;
 
+
 namespace execplan
 {
 /**
@@ -140,8 +141,7 @@ string FunctionColumn::toCppCode(IncludeSet& includes) const
 
   auto fFuncParmsInString = fData.substr(fFunctionName.size() + 1, fData.size() - fFunctionName.size() - 2);
 
-  ss << "FunctionColumn(" << std::quoted(fFunctionName) << ", " << std::quoted(fFuncParmsInString) << ", "
-     << sessionID() << ")";
+  ss << "FunctionColumn(" << std::quoted(fFunctionName) << ", " << std::quoted(fFuncParmsInString) << ", " << sessionID() << ")";
 
   return ss.str();
 }
@@ -521,14 +521,6 @@ void FunctionColumn::setSimpleColumnList()
     fFunctionParms[i]->walk(getSimpleCols, &fSimpleColumnList);
 }
 
-void FunctionColumn::setSimpleColumnListExtended()
-{
-  fSimpleColumnListExtended.clear();
-
-  for (uint i = 0; i < fFunctionParms.size(); i++)
-    fFunctionParms[i]->walk(getSimpleColsExtended, &fSimpleColumnListExtended);
-}
-
 std::optional<CalpontSystemCatalog::TableAliasName> FunctionColumn::singleTable()
 {
   setSimpleColumnList();
diff --git a/dbcon/execplan/functioncolumn.h b/dbcon/execplan/functioncolumn.h
index 0a3667506..bd209a9bd 100644
--- a/dbcon/execplan/functioncolumn.h
+++ b/dbcon/execplan/functioncolumn.h
@@ -159,9 +159,12 @@ class FunctionColumn : public ReturnedColumn
   bool hasWindowFunc() override;
   void setDerivedTable() override;
   void replaceRealCol(std::vector<SRCP>&) override;
+  virtual const std::vector<SimpleColumn*>& simpleColumnList() const override
+  {
+    return fSimpleColumnList;
+  }
 
   void setSimpleColumnList() override;
-  void setSimpleColumnListExtended() override;
   /**
    * Return the tableAlias name of the table that the column arguments belong to.
    *
diff --git a/dbcon/execplan/returnedcolumn.cpp b/dbcon/execplan/returnedcolumn.cpp
index efbd3fb88..81b892d87 100644
--- a/dbcon/execplan/returnedcolumn.cpp
+++ b/dbcon/execplan/returnedcolumn.cpp
@@ -260,9 +260,4 @@ void ReturnedColumn::setSimpleColumnList()
   fSimpleColumnList.clear();
 }
 
-void ReturnedColumn::setSimpleColumnListExtended()
-{
-  fSimpleColumnListExtended.clear();
-}
-
 }  // namespace execplan
diff --git a/dbcon/execplan/returnedcolumn.h b/dbcon/execplan/returnedcolumn.h
index 4d2212a6d..51355f1aa 100644
--- a/dbcon/execplan/returnedcolumn.h
+++ b/dbcon/execplan/returnedcolumn.h
@@ -287,11 +287,6 @@ class ReturnedColumn : public TreeNode
     return fSimpleColumnList;
   }
 
-  virtual const std::vector<SimpleColumn*>& simpleColumnListExtended() const
-  {
-    return fSimpleColumnListExtended;
-  }
-
   /* @brief traverse this ReturnedColumn and re-populate fSimpleColumnList.
    *
    * @note all ReturnedColumns that may have simple column arguments added
@@ -299,8 +294,6 @@ class ReturnedColumn : public TreeNode
    */
   virtual void setSimpleColumnList();
 
-  virtual void setSimpleColumnListExtended();
-
   // get all aggregate column list in this expression
   const std::vector<AggregateColumn*>& aggColumnList() const
   {
@@ -349,10 +342,7 @@ class ReturnedColumn : public TreeNode
   uint64_t fOrderPos;    /// for order by and group by column
   uint64_t fColSource;   /// from which subquery
   int64_t fColPosition;  /// the column position in the source subquery
-  // The difference b/w the two vectors is that the second one is used to store SCs
-  // are are used by AggegateColumn.
   std::vector<SimpleColumn*> fSimpleColumnList;
-  std::vector<SimpleColumn*> fSimpleColumnListExtended{};
   std::vector<AggregateColumn*> fAggColumnList;
   std::vector<WindowFunctionColumn*> fWindowFunctionColumnList;
   bool fHasAggregate;  /// connector internal use. no need to serialize
diff --git a/dbcon/execplan/simplecolumn.cpp b/dbcon/execplan/simplecolumn.cpp
index 7030efd67..1eb83871d 100644
--- a/dbcon/execplan/simplecolumn.cpp
+++ b/dbcon/execplan/simplecolumn.cpp
@@ -91,48 +91,6 @@ void getSimpleCols(execplan::ParseTree* n, void* obj)
   }
 }
 
-void getSimpleColsExtended(execplan::ParseTree* n, void* obj)
-{
-  vector<SimpleColumn*>* list = reinterpret_cast<vector<SimpleColumn*>*>(obj);
-  TreeNode* tn = n->data();
-  SimpleColumn* sc = dynamic_cast<SimpleColumn*>(tn);
-  FunctionColumn* fc = dynamic_cast<FunctionColumn*>(tn);
-  ArithmeticColumn* ac = dynamic_cast<ArithmeticColumn*>(tn);
-  SimpleFilter* sf = dynamic_cast<SimpleFilter*>(tn);
-  ConstantFilter* cf = dynamic_cast<ConstantFilter*>(tn);
-  AggregateColumn* agc = dynamic_cast<AggregateColumn*>(tn);
-
-  if (sc)
-  {
-    list->push_back(sc);
-  }
-  else if (fc)
-  {
-    fc->setSimpleColumnListExtended();
-    list->insert(list->end(), fc->simpleColumnListExtended().begin(), fc->simpleColumnListExtended().end());
-  }
-  else if (ac)
-  {
-    ac->setSimpleColumnListExtended();
-    list->insert(list->end(), ac->simpleColumnListExtended().begin(), ac->simpleColumnListExtended().end());
-  }
-  else if (agc)
-  {
-    agc->setSimpleColumnListExtended();
-    list->insert(list->end(), agc->simpleColumnListExtended().begin(), agc->simpleColumnListExtended().end());
-  }
-  else if (sf)
-  {
-    sf->setSimpleColumnListExtended();
-    list->insert(list->end(), sf->simpleColumnListExtended().begin(), sf->simpleColumnListExtended().end());
-  }
-  else if (cf)
-  {
-    cf->setSimpleColumnListExtended();
-    list->insert(list->end(), cf->simpleColumnListExtended().begin(), cf->simpleColumnListExtended().end());
-  }
-}
-
 ParseTree* replaceRefCol(ParseTree*& n, CalpontSelectExecutionPlan::ReturnedColumnList& derivedColList)
 {
   ParseTree* lhs = n->left();
@@ -824,18 +782,6 @@ void SimpleColumn::setSimpleColumnList()
   }
 }
 
-void SimpleColumn::setSimpleColumnListExtended()
-{
-  if (fSimpleColumnListExtended.empty())
-  {
-    fSimpleColumnListExtended.push_back(this);
-  }
-  else
-  {
-    fSimpleColumnListExtended.back() = this;
-  }
-}
-
 std::optional<CalpontSystemCatalog::TableAliasName> sameTableCheck(
     std::vector<SimpleColumn*> simpleColumnList)
 {
diff --git a/dbcon/execplan/simplecolumn.h b/dbcon/execplan/simplecolumn.h
index 2038c7a2b..91e343623 100644
--- a/dbcon/execplan/simplecolumn.h
+++ b/dbcon/execplan/simplecolumn.h
@@ -266,7 +266,7 @@ class SimpleColumn : public ReturnedColumn
   std::optional<CalpontSystemCatalog::TableAliasName> singleTable() override;
 
   void setSimpleColumnList() override;
-  void setSimpleColumnListExtended() override;
+
 
  protected:
   /**
@@ -407,10 +407,8 @@ std::ostream& operator<<(std::ostream& output, const SimpleColumn& rhs);
  * utility function to extract all simple columns from a parse tree
  */
 void getSimpleCols(ParseTree* n, void* obj);
-void getSimpleColsExtended(execplan::ParseTree* n, void* obj);
 ParseTree* replaceRefCol(ParseTree*& n, CalpontSelectExecutionPlan::ReturnedColumnList&);
 
-std::optional<CalpontSystemCatalog::TableAliasName> sameTableCheck(
-    std::vector<SimpleColumn*> simpleColumnList);
+std::optional<CalpontSystemCatalog::TableAliasName> sameTableCheck(std::vector<SimpleColumn*> simpleColumnList);
 
 }  // namespace execplan
diff --git a/dbcon/execplan/simplefilter.cpp b/dbcon/execplan/simplefilter.cpp
index 8ac61522d..b6981c4d9 100644
--- a/dbcon/execplan/simplefilter.cpp
+++ b/dbcon/execplan/simplefilter.cpp
@@ -810,11 +810,6 @@ const std::vector<SimpleColumn*>& SimpleFilter::simpleColumnList()
   return fSimpleColumnList;
 }
 
-const std::vector<SimpleColumn*>& SimpleFilter::simpleColumnListExtended()
-{
-  return fSimpleColumnListExtended;
-}
-
 void SimpleFilter::setSimpleColumnList()
 {
   SimpleColumn* lsc = dynamic_cast<SimpleColumn*>(fLhs);
@@ -844,35 +839,6 @@ void SimpleFilter::setSimpleColumnList()
   }
 }
 
-void SimpleFilter::setSimpleColumnListExtended()
-{
-  SimpleColumn* lsc = dynamic_cast<SimpleColumn*>(fLhs);
-  SimpleColumn* rsc = dynamic_cast<SimpleColumn*>(fRhs);
-  fSimpleColumnListExtended.clear();
-
-  if (lsc)
-  {
-    fSimpleColumnListExtended.push_back(lsc);
-  }
-  else if (fLhs)
-  {
-    fLhs->setSimpleColumnListExtended();
-    fSimpleColumnList.insert(fSimpleColumnList.end(), fLhs->simpleColumnListExtended().begin(),
-                             fLhs->simpleColumnListExtended().end());
-  }
-
-  if (rsc)
-  {
-    fSimpleColumnList.push_back(rsc);
-  }
-  else if (fRhs)
-  {
-    fRhs->setSimpleColumnListExtended();
-    fSimpleColumnList.insert(fSimpleColumnList.end(), fRhs->simpleColumnListExtended().begin(),
-                             fRhs->simpleColumnListExtended().end());
-  }
-}
-
 bool SimpleFilter::hasAggregate()
 {
   if (fAggColumnList.empty())
diff --git a/dbcon/execplan/simplefilter.h b/dbcon/execplan/simplefilter.h
index 6254bf32a..5267e4a76 100644
--- a/dbcon/execplan/simplefilter.h
+++ b/dbcon/execplan/simplefilter.h
@@ -246,10 +246,8 @@ class SimpleFilter : public Filter
 
   // get all simple columns involved in this column
   const std::vector<SimpleColumn*>& simpleColumnList();
-  const std::vector<SimpleColumn*>& simpleColumnListExtended();
   // walk through the simple filter operands to re-populate fSimpleColumnList
   void setSimpleColumnList();
-  void setSimpleColumnListExtended();
   // walk through the simple filter operands to check existence of aggregate
   bool hasAggregate();
 
@@ -267,7 +265,6 @@ class SimpleFilter : public Filter
 
  private:
   std::vector<SimpleColumn*> fSimpleColumnList;
-  std::vector<SimpleColumn*> fSimpleColumnListExtended{};
   std::vector<AggregateColumn*> fAggColumnList;
   std::vector<WindowFunctionColumn*> fWindowFunctionColumnList;
 };
diff --git a/dbcon/joblist/jlf_common.cpp b/dbcon/joblist/jlf_common.cpp
index de6a86f7c..7f3726575 100644
--- a/dbcon/joblist/jlf_common.cpp
+++ b/dbcon/joblist/jlf_common.cpp
@@ -67,6 +67,8 @@ uint32_t uniqTupleKey(JobInfo& jobInfo, CalpontSystemCatalog::OID& o, CalpontSys
     return iter->second;
 
   uint32_t newId = jobInfo.keyInfo->nextKey++;
+  // cout << "new id: " << newId << " -- " << o << ", " << pi << ", " << nm << ", " << vw << ", " << sn << ",
+  // " << subId << endl;
   jobInfo.keyInfo->tupleKeyMap[id] = newId;
   jobInfo.keyInfo->tupleKeyVec.push_back(id);
   jobInfo.keyInfo->tupleKeyToTableOid.insert(make_pair(newId, t));
diff --git a/dbcon/rbo/rbo_apply_parallel_ces.cpp b/dbcon/rbo/rbo_apply_parallel_ces.cpp
index 4c65d6bb8..44e782ac9 100644
--- a/dbcon/rbo/rbo_apply_parallel_ces.cpp
+++ b/dbcon/rbo/rbo_apply_parallel_ces.cpp
@@ -523,15 +523,27 @@ void tryToUpdateScToUseRewrittenDerived(
 }
 
 void updateSCsUsingIteration(optimizer::TableAliasToNewAliasAndSCPositionsMap& tableAliasToSCPositionsMap,
-                             std::vector<execplan::SRCP>& rcs)
+                             std::vector<execplan::SRCP>& rcs, const bool ignoreAgg)
 {
   for (auto& rc : rcs)
   {
-    rc->setSimpleColumnListExtended();
-    for (auto* sc : rc->simpleColumnListExtended())
+    rc->setSimpleColumnList();
+    for (auto* sc : rc->simpleColumnList())
     {
       tryToUpdateScToUseRewrittenDerived(sc, tableAliasToSCPositionsMap);
     }
+
+    if (!ignoreAgg && rc->hasAggregate())
+    {
+      for (auto* agc : rc->aggColumnList())
+      {
+        agc->setSimpleColumnList();
+        for (auto* sc : agc->simpleColumnList())
+        {
+          tryToUpdateScToUseRewrittenDerived(sc, tableAliasToSCPositionsMap);
+        }
+      }
+    }
   }
 }
 
@@ -539,7 +551,7 @@ void updateSCsUsingWalkers(optimizer::TableAliasToNewAliasAndSCPositionsMap& tab
                            execplan::ParseTree* pt)
 {
   std::vector<execplan::SimpleColumn*> simpleColumns;
-  pt->walk(execplan::getSimpleColsExtended, &simpleColumns);
+  pt->walk(execplan::getSimpleCols, &simpleColumns);
   for (auto* sc : simpleColumns)
   {
     tryToUpdateScToUseRewrittenDerived(sc, tableAliasToSCPositionsMap);
@@ -610,7 +622,7 @@ bool applyParallelCES(execplan::CalpontSelectExecutionPlan& csep, optimizer::RBO
   {
     for (auto& rc : csep.returnedCols())
     {
-      updateSCsUsingIteration(tableAliasToSCPositionsMap, csep.returnedCols());
+      updateSCsUsingIteration(tableAliasToSCPositionsMap, csep.returnedCols(), false);
       newReturnedColumns.push_back(rc);
     }
 
@@ -621,13 +633,13 @@ bool applyParallelCES(execplan::CalpontSelectExecutionPlan& csep, optimizer::RBO
     // 3d pass over GROUP BY columns
     if (!csep.groupByCols().empty())
     {
-      updateSCsUsingIteration(tableAliasToSCPositionsMap, csep.groupByCols());
+      updateSCsUsingIteration(tableAliasToSCPositionsMap, csep.groupByCols(), true);
     }
 
     // 4th pass over ORDER BY columns
     if (!csep.orderByCols().empty())
     {
-      updateSCsUsingIteration(tableAliasToSCPositionsMap, csep.orderByCols());
+      updateSCsUsingIteration(tableAliasToSCPositionsMap, csep.orderByCols(), false);
     }
 
     // 5th pass over filters to use derived table SCs in filters
@@ -664,7 +676,7 @@ bool applyParallelCES(execplan::CalpontSelectExecutionPlan& csep, optimizer::RBO
           if (auto subFilters = sub->filters())
           {
             std::vector<execplan::SimpleColumn*> subSCs;
-            subFilters->walk(execplan::getSimpleColsExtended, &subSCs);
+            subFilters->walk(execplan::getSimpleCols, &subSCs);
             for (auto* sc : subSCs)
             {
               if (sc)
@@ -674,7 +686,7 @@ bool applyParallelCES(execplan::CalpontSelectExecutionPlan& csep, optimizer::RBO
           if (auto subHaving = sub->having())
           {
             std::vector<execplan::SimpleColumn*> subSCs;
-            subHaving->walk(execplan::getSimpleColsExtended, &subSCs);
+            subHaving->walk(execplan::getSimpleCols, &subSCs);
             for (auto* sc : subSCs)
             {
               if (sc)