******************************* JSON Functions ******************************* .. function:: json_extract_path_text (string json, string xpath) Extracts JSON string from a JSON string based on json path specified and returns JSON string pointed to by xPath :param string: :param string: :rtype: text :example: .. code-block:: sql json_extract_path_text('{"test" : {"key" : "tajo"}}','$.test.key'); > tajo