   select s.*,d.*   
   from server s   
   left join device_base d on   s.device_base_id= d.id   
   left join logic_site l on l.id = d.logic_site_id   
   where s.gmt_modify > ? and l.site_name = "开发测试"  
---------------------------
SELECT s.*, d.*
FROM server s
	LEFT JOIN device_base d ON s.device_base_id = d.id
	LEFT JOIN logic_site l ON l.id = d.logic_site_id
WHERE s.gmt_modify > ?
	AND l.site_name = '开发测试'