delete from device_component_detail where device_component_id=#{componentId} delete from device_component_detail where device_component_id in #{item} select a.* ,b.part_no,iFNULL(b.type_attr,'未设置') AS 'typeAttr' from device_component_detail a join t_base_part b on a.model_part_id=b.id where a.device_component_id=#{deviceComponentId} SELECT dct.* FROM device_component dc INNER JOIN device_component_detail dct ON dc.id=dct.device_component_id WHERE dc.model_no=#{modelNo}