text: UPDATE qywx_messagelog
  SET 
  	   <#if qywxMessagelog.wxAgentId ?exists>
  		   wx_agent_id = :qywxMessagelog.wxAgentId,
  		</#if>
  	   <#if qywxMessagelog.topartysId ?exists>
  		   topartys_id = :qywxMessagelog.topartysId,
  		</#if>
  	   <#if qywxMessagelog.messageType ?exists>
  		   message_type = :qywxMessagelog.messageType,
  		</#if>
  	   <#if qywxMessagelog.messageContent ?exists>
  		   message_content = :qywxMessagelog.messageContent,
  		</#if>
  	   <#if qywxMessagelog.contentId ?exists>
  		   content_id = :qywxMessagelog.contentId,
  		</#if>
  	   <#if qywxMessagelog.receiveMessage ?exists>
  		   receive_message = :qywxMessagelog.receiveMessage,
  		</#if>
  	    <#if qywxMessagelog.createDate ?exists>
  		   create_date = :qywxMessagelog.createDate,
  		</#if>
  WHERE id = :qywxMessagelog.id