添加SQL 执行方法

@@ -296,7 +296,13 @@ class Connection extends Root
         return $stmt;
     }
 
-    public function execute($sql, $parameterMap, $replaceMap)
+    /**
+     * 执行SQL
+     * @param $sql
+     * @param $parameterMap
+     * @throws DebugException
+     */
+    public function execute($sql, array $parameterMap = array())
     {
         $this->_PDOConn = $conn = $this->connect();
         $this->_PDOStatement = $stmt = $conn->prepare($sql);