昨天用到的一个sql查询。可取处，用max

SELECT T_AssetInfos_ID,
       MAX(T_AssetConstruct_Name),
       MAX(T_AssetProperties_Name),
       SUM(CAST(PropertyValue AS INT))
FROM   T_AssetPropertyData
WHERE  T_AssetConstruct_Name IN ('硬盘', '内存条')
GROUP BY
       T_AssetInfos_ID,
       T_AssetConstruct_ID,
       T_AssetProperties_ID