Pass NULL for plannerInfo as we don't generate PlaceHolderVars

src/backend/distributed/operations/delete_protocol.c

@@ -688,6 +688,8 @@ ShardsMatchingDeleteCriteria(Oid relationId, List *shardIntervalList,
 	Assert(deleteCriteria != NULL);
 	List *deleteCriteriaList = list_make1(deleteCriteria);
 
+	
+
 	/* walk over shard list and check if shards can be dropped */
 	ShardInterval *shardInterval = NULL;
 	foreach_ptr(shardInterval, shardIntervalList)
@@ -703,9 +705,17 @@ ShardsMatchingDeleteCriteria(Oid relationId, List *shardIntervalList,
 			Expr *lessThanExpr = (Expr *) linitial(andExpr->args);
 			Expr *greaterThanExpr = (Expr *) lsecond(andExpr->args);
 
-			RestrictInfo *lessThanRestrictInfo = make_simple_restrictinfo(lessThanExpr);
-			RestrictInfo *greaterThanRestrictInfo = make_simple_restrictinfo(
-				greaterThanExpr);
+			/*
+			 * passing NULL for plannerInfo will be problematic if we have placeholder
+			 * vars. However, it won't be the case here because we are building
+			 * the expression from shard intervals which don't have placeholder vars.
+			 * Note that this is only the case with PG14 as the parameter doesn't exist
+			 * prior to that.
+			 */
+			RestrictInfo *lessThanRestrictInfo = make_simple_restrictinfo_compat(NULL,
+																				 lessThanExpr);
+			RestrictInfo *greaterThanRestrictInfo = make_simple_restrictinfo_compat(NULL,
+																					greaterThanExpr);
 
 			restrictInfoList = lappend(restrictInfoList, lessThanRestrictInfo);
 			restrictInfoList = lappend(restrictInfoList, greaterThanRestrictInfo);

src/backend/distributed/planner/insert_select_planner.c

@@ -747,7 +747,16 @@ RouterModifyTaskForShardInterval(Query *originalQuery,
 			continue;
 		}
 
-		shardRestrictionList = make_simple_restrictinfo((Expr *) shardOpExpressions);
+
+		/*
+		 * passing NULL for plannerInfo will be problematic if we have placeholder
+		 * vars. However, it won't be the case here because we are building
+		 * the expression from shard intervals which don't have placeholder vars.
+		 * Note that this is only the case with PG14 as the parameter doesn't exist
+		 * prior to that.
+		 */
+		shardRestrictionList = make_simple_restrictinfo_compat(NULL,
+															   (Expr *) shardOpExpressions);
 		extendedBaseRestrictInfo = lappend(extendedBaseRestrictInfo,
 										   shardRestrictionList);
 

src/backend/distributed/planner/relation_restriction_equivalence.c

@@ -2054,7 +2054,7 @@ GetRestrictInfoListForRelation(RangeTblEntry *rangeTblEntry,
 		 * If the restriction involves multiple tables, we cannot add it to
 		 * input relation's expression list.
 		 */
-		Relids varnos = pull_varnos((Node *) restrictionClause);
+		Relids varnos = pull_varnos_compat(relationRestriction->plannerInfo, (Node *) restrictionClause);
 		if (bms_num_members(varnos) != 1)
 		{
 			continue;