SELECT DISTINCT mp.Group_Name FROM measurement_test mt, measurement_point mp, measurement_values mv
WHERE mt.Test_ID = mv.Test_ID AND mv.Point_ID = mp.Point_ID AND mt.ID_Number = 'WR20120603_05'
SELECT DISTINCT mp.Group_Name FROM measurement_test mt, measurement_point mp, measurement_values mv
WHERE mt.Test_ID = mv.Test_ID AND mv.Point_ID = mp.Point_ID AND mt.ID_Number = 'WR20120603_04'
以上是我在网页中使用的两个查询。实际上我只想获得两个查询之间结果的共同 group_name 值,是否有任何其他可能的方式来实现这个特定场景,或者简单化上述两个查询?