diff --git a/core/modules/node/node.module b/core/modules/node/node.module
index 3db5bbd..8e3e549 100644
--- a/core/modules/node/node.module
+++ b/core/modules/node/node.module
@@ -3359,11 +3359,23 @@ function _node_query_node_access_alter($query, $type) {
 
       // For an entity query, attach the subquery to entity conditions.
       if ($type == 'entity') {
-        $node_conditions->exists($subquery);
+        if ($tableinfo['join type'] == 'LEFT') {
+          // This table can be null.
+          $node_conditions->condition(db_or()->isNull("$nalias.$field")->exists($subquery));
+        }
+        else {
+          $node_conditions->exists($subquery);
+        }
       }
       // Otherwise attach it to the node query itself.
       else {
-        $query->exists($subquery);
+        if ($tableinfo['join type'] == 'LEFT') {
+          // This table can be null.
+          $query->condition(db_or()->isNull("$nalias.$field")->exists($subquery));
+        }
+        else {
+          $query->exists($subquery);
+        }
       }
     }
   }