求一循环语句T-SQL或者ACCESS格式

SQL code

/*原始数据DayTime  Result20110101    3.8920110101    2.2920110101    4.0320110101    2.5720110103    2.4620110103    3.8920110103    4.1720110103    2.3920110103    3.5620110107    1.3620110107    3.8220110107    2.5820110107    2.7620110107    4.51求：DayTime为20110101这一天Result的平均值。DayTime为20110103这一天Result的平均值。DayTime为20110107这一天Result的平均值。求个循环。*/

SQL code

SELECT avg(Result) FROM [table] group by DayTime