嘿大家我想知道如何通过以下表格中的选择来创建平均值。
MinutesToLoad |Environment | Server | Exchange | StartTime |EndTime 140 ENVIRONMENT_A | Server2 | TAI | 2013-01-06 17:22:44.000 | 2013-01-06 19:42:53.000 135 ENVIRONMENT_A | Server2 | TAI | 2013-01-07 17:23:21.000 | 2013-01-07 19:38:37.000 130 ENVIRONMENT_A | Server2 | TAI | 2013-01-08 17:24:03.000 | 2013-01-08 19:34:17.000 130 ENVIRONMENT_A | Server2 | TAI | 2013-01-09 17:24:42.000 | 2013-01-09 19:34:45.000 140 ENVIRONMENT_A | Server1 | TAI | 2013-01-06 17:22:44.000 | 2013-01-06 19:42:53.000 135 ENVIRONMENT_A | Server1 | TAI | 2013-01-07 17:23:21.000 | 2013-01-07 19:38:37.000 130 ENVIRONMENT_A | Server1 | TAI | 2013-01-08 17:24:03.000 | 2013-01-08 19:34:17.000 130 ENVIRONMENT_A | Server1 | TAI | 2013-01-09 17:24:42.000 | 2013-01-09 19:34:45.000 1430 ENVIRONMENT_A | Server1 | SET | 2013-01-07 00:03:01.000 | 2013-01-07 23:53:37.000 1431 ENVIRONMENT_A | Server1 | SET | 2013-01-08 00:03:36.000 | 2013-01-08 23:54:14.000 1430 ENVIRONMENT_A | Server1 | SET | 2013-01-09 00:04:14.000 | 2013-01-09 23:54:55.000 1430 ENVIRONMENT_A | Server2 | SET | 2013-01-07 00:03:01.000 | 2013-01-07 23:53:37.000 1431 ENVIRONMENT_A | Server2 | SET | 2013-01-08 00:03:36.000 | 2013-01-08 23:54:14.000 1430 ENVIRONMENT_A | Server2 | SET | 2013-01-09 00:04:14.000 | 2013-01-09 23:54:55.000 1 ENVIRONMENT_A | Server2 | QXI | 2013-01-08 03:23:57.000 | 2013-01-08 03:24:02.000 1 ENVIRONMENT_A | Server1 | QXI | 2013-01-08 03:23:57.000 | 2013-01-08 03:24:02.000
MinutesToLoad在我的选择程序中实际上是DATEDIFF（MINUTE，startTime，EndTime），但其余部分来自表格。
目标结果是将此结果看起来像这样：
MinutesToLoadOverLast10Days - Environment - Server - Exchange 133 ENVIRONMENT_A Server2 TAI 133 ENVIRONMENT_A Server1 TAI 1430 ENVIRONMENT_A Server1 SET 1430 ENVIRONMENT_A Server2 SET 1 ENVIRONMENT_A Server2 QXI 1 ENVIRONMENT_A Server1 QXI
我知道我将使用AVG功能，但我在试图找出使用它来获得我想要的结果时迷失了。
提前谢谢。
答案 0 :(得分：0)
Select avg(MinutesToLoadOverLast10Days),Environment, Server,Exchange
FROM YOUR_TABLE_NAME
GROUP BY Environment, Server,Exchange