sql server加入同一个表

Question

这是我在表格中的行:

Id    |       FromDate            |       ToDate             | prod_Id
------|---------------------------|--------------------------|-------
1     |   2012-08-13 07:00:00.000 |  2012-08-14 18:59:00.000 |    10
1     |   2012-08-13 07:00:00.000 |  2012-08-15 18:59:00.000 |    10
1     |   2012-08-13 07:00:00.000 |  2012-08-16 18:59:00.000 |    10 

我想得到如下结果:

Id  |   FromDate                  |        ToDate             | prod_Id
----|-----------------------------|---------------------------|---------
1   |    2012-08-13 07:00:00.000  |   2012-08-16 18:59:00.000 |   10 

怎么做？

Answer 1

 SELECT Id, MIN(FromDate), MAX(ToDate), prod_Id
 FROM TbName
 GROUP BY Id, prod_Id