Initialize es_snapshot.

src/backend/executor/nodeSubplan.c

@@ -121,6 +121,7 @@ ExecInitSubPlan(SubPlan *node, EState *estate, Plan *parent)
 		ExecCreateTupleTable(ExecCountSlotsNode(node->plan) + 10);
 	pfree(sp_estate->es_refcount);
 	sp_estate->es_refcount = estate->es_refcount;
+	sp_estate->es_snapshot = estate->es_snapshot;
 
 	if (!ExecInitNode(node->plan, sp_estate, NULL))
 		return false;

src/backend/executor/nodeTee.c

@@ -14,7 +14,7 @@
  *		ExecInitTee
  *		ExecEndTee
  *
- *  $Id: nodeTee.c,v 1.27 1998/12/14 06:50:22 scrappy Exp $
+ *  $Id: nodeTee.c,v 1.28 1999/02/01 13:33:27 vadim Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -80,6 +80,7 @@ ExecInitTee(Tee *node, EState *currentEstate, Plan *parent)
 	estate->es_tupleTable = currentEstate->es_tupleTable;
 	estate->es_refcount = currentEstate->es_refcount;
 	estate->es_junkFilter = currentEstate->es_junkFilter;
+	estate->es_snapshot = currentEstate->es_snapshot;
 
 	/*
 	 * use the range table for Tee subplan since the range tables for the