3 files changed, 9 insertions, 0 deletions
diff --git a/src/include/executor/executor.h b/src/include/executor/executor.h
index 8e7a5453064..086f52cff3d 100644
--- a/src/include/executor/executor.h
+++ b/src/include/executor/executor.h
@@ -157,6 +157,9 @@ extern TupleHashEntry FindTupleHashEntry(TupleHashTable hashtable,
 										 ExprState *eqcomp,
 										 ExprState *hashexpr);
 extern void ResetTupleHashTable(TupleHashTable hashtable);
+extern Size EstimateTupleHashTableSpace(double nentries,
+										Size tupleWidth,
+										Size additionalsize);
 
 #ifndef FRONTEND
 /*
diff --git a/src/include/executor/nodeSetOp.h b/src/include/executor/nodeSetOp.h
index 024c6ba1fce..302936df8be 100644
--- a/src/include/executor/nodeSetOp.h
+++ b/src/include/executor/nodeSetOp.h
@@ -20,4 +20,6 @@ extern SetOpState *ExecInitSetOp(SetOp *node, EState *estate, int eflags);
 extern void ExecEndSetOp(SetOpState *node);
 extern void ExecReScanSetOp(SetOpState *node);
 
+extern Size EstimateSetOpHashTableSpace(double nentries, Size tupleWidth);
+
 #endif							/* NODESETOP_H */
diff --git a/src/include/executor/nodeSubplan.h b/src/include/executor/nodeSubplan.h
index a1cafbcc694..301c29d1f24 100644
--- a/src/include/executor/nodeSubplan.h
+++ b/src/include/executor/nodeSubplan.h
@@ -20,6 +20,10 @@ extern SubPlanState *ExecInitSubPlan(SubPlan *subplan, PlanState *parent);
 
 extern Datum ExecSubPlan(SubPlanState *node, ExprContext *econtext, bool *isNull);
 
+extern Size EstimateSubplanHashTableSpace(double nentries,
+										  Size tupleWidth,
+										  bool unknownEqFalse);
+
 extern void ExecReScanSetParamPlan(SubPlanState *node, PlanState *parent);
 
 extern void ExecSetParamPlan(SubPlanState *node, ExprContext *econtext);