我的SQL Server数据库中有以下表格，需要将等效日期时间的不同结果转换为单行。
+---------+---------+-------+---------------------+
| Path | Counter | Value | Datetime |
+---------+---------+-------+---------------------+
| Server1 | FreeMB | 1024 | 2014-05-19 10:54:00 |
| Server1 | % Free | 10 | 2014-05-19 10:54:00 |
| Server2 | FreeMB | 512 | 2014-05-19 10:54:00 |
| Server2 | % Free | 8 | 2014-05-19 10:54:00 |
| Server1 | FreeMB | 2048 | 2014-05-19 10:44:00 |
| Server1 | % Free | 20 | 2014-05-19 10:44:00 |
| Server2 | FreeMB | 1024 | 2014-05-19 10:44:00 |
| Server2 | % Free | 16 | 2014-05-19 10:44:00 |
| Server1 | % Free | 30 | 2014-05-19 10:34:00 |
| Server1 | FreeMB | 3072 | 2014-05-19 10:34:00 |
| Server2 | FreeMB | 1536 | 2014-05-19 10:34:00 |
| Server2 | % Free | 24 | 2014-05-19 10:34:00 |
| Server1 | FreeMB | 4096 | 2014-05-19 10:24:00 |
| Server1 | % Free | 40 | 2014-05-19 10:24:00 |
| Server2 | FreeMB | 2048 | 2014-05-19 10:24:00 |
| Server2 | % Free | 32 | 2014-05-19 10:24:00 |
+---------+---------+-------+---------------------+
我需要以下输出：
+---------------------+---------+--------+--------+
| Datetime | Path | FreeMB | % Free |
+---------------------+---------+--------+--------+
| 2014-05-19 10:54:00 | Server1 | 1024 | 10 |
| 2014-05-19 10:54:00 | Server2 | 512 | 8 |
| 2014-05-19 10:44:00 | Server1 | 2048 | 20 |
| 2014-05-19 10:44:00 | Server2 | 1024 | 16 |
| 2014-05-19 10:34:00 | Server1 | 3072 | 30 |
| 2014-05-19 10:34:00 | Server2 | 1536 | 24 |
| 2014-05-19 10:24:00 | Server1 | 4096 | 40 |
| 2014-05-19 10:24:00 | Server2 | 2048 | 32 |
+---------------------+---------+--------+--------+
SQL查询的任何想法都可以这样做吗？
提前致谢！
与this case不同，因为输出中有多行，并按日期时间进行分组。