diff --git a/library/think/db/Connection.php b/library/think/db/Connection.php
index dba76bdc..c66515a2 100644
--- a/library/think/db/Connection.php
+++ b/library/think/db/Connection.php
@@ -521,7 +521,8 @@ abstract class Connection
                 $item[] = $result;
             }
         } while ($this->PDOStatement->nextRowset());
-        return $result;
+        $this->numRows = count($item);
+        return $item;
     }
 
     /**