mybatis如何返回某列的最大值

<select id="queryMaxId" resultType="Integer"> 
select Max(id) as id from table
<select>

select * from table  where id=(select MAX(id) from table ) 

/**
 * 封装的实体对象,属性对应你的查询结果字段，根据自己的情况添加
 */
@Data
public class MaxAndMinVA implements Serializable {
    private static final long serialVersionUID = 1L; 
    private String address; 
    private Double maxVoltage; 
    private Double maxElectricity; 
    private Double minVoltage; 
    private Double minElectricity;
}

select device.address,max(va.voltage),max(va.electricity),min(va.voltage),min(va.electricity) from device left join va on device.id=va.device_id GROUP BY va.device_id

<select id="va" resultType="com.cn.VO.MaxAndMinVA"> 
 select device.address,max(va.voltage) as maxVoltage,max(va.electricity) as maxElectricity,min(va.voltage) as minVoltage,min(va.electricity) as minElectricity from device left join va on device.id=va.device_id GROUP BY va.device_id
</select>

List<MaxAndMinVA> va();