undo last query in mysql workbench

CREATE TABLE `a_messages` (
  `a_messages_id` int(11) NOT NULL auto_increment,
  `conversation_id` bigint(20) default NULL,
  `profile_id` varchar(20) default NULL,
  `sender` varchar(20) default NULL,
  `message_id` bigint(20) default NULL,
  `message_text` varchar(1000) default NULL,
  `dateAgo` datetime default NULL,
  `message_read` tinyint(4) default NULL,
  `this_user` varchar(20) default NULL,
  PRIMARY KEY  (`a_messages_id`),
  UNIQUE KEY `unique_message_id` (`message_id`)
) ENGINE=MyISAM AUTO_INCREMENT=2110 DEFAULT CHARSET=utf8;










could I undo one delete query run in mysql workbench

delete from a_messages where this_user!='staff1'




this is a shared hosting mysql
I have not enabled remote administration for this server.  Without it this log file can not be shown.


mysql workbench is an oracle tool