Question

以下是我创建表格的方法：

CREATE TABLE #tmp
(
  [Counter] int
  ,Per date not null
  ,Cam float
  ,CamMeg float
  ,Hfx float
  ,HfxMet float
  ,TorMetric float

)

以下是我稍后在脚本中调用该表的方法：

SELECT 
  ((ROW_NUMBER() over(order by Per desc)-1)/@Avg)+1 as [Counter], Per, 
  Cam, 
  AVG(CamMetric) as CamMet, 
  HfxMe, 

FROM #tmp
GROUP BY [counter] ;

DROP TABLE #tmp

以下是我得到的错误：

Msg 8120，Level 16，State 1，Line 175   列'＃tmp.Per'在选择列表中无效，因为它不包含在聚合函数或GROUP BY子句中。

Msg 8120，Level 16，State 1，Line 175   列'＃tmp.Per'在选择列表中无效，因为它不包含在聚合函数或GROUP BY子句中。

我做错了什么？

数据如下所示

counter --- per ---Cam --- HfxMet ---......

 1        2012-02-09      3       16
 1        2012-02-24      4       12
 1        2012-03-04      2       15
 2        2012-03-15      1       18
 2        2012-03-30      6       20
 2        2012-04-07      10      6
 3        2012-04-28      8       3

现在我想再添加两个名为CamMetricAvg和HfxMetric的列，它们将查看所有1的计数器，然后分别获取CamMetric和HfxMetric值并给出平均值并将其放在每个列上如下所示：

counter --- per ---Cam --- CamMt ---

 1        2012-02-09      3         3                
 1        2012-02-24      4         3                
 1        2012-03-04      2         3              
 2        2012-03-15      1         5.6             
 2        2012-03-30      6         5.6             
 2        2012-04-07      10        5.6              
 3        2012-04-28      8         8

Answer 1

SELECT [Counter], Period,
  CamMetric, 
  AvgCamMetric = AVG(CamMetric) OVER(PARTITION BY Counter),
  HfxMetric, 
  AvgHfxMetric = AVG(HfxMetric) OVER(PARTITION BY Counter)
  ... repeat for other metrics ...
FROM #tmpTransHrsData
GROUP BY [Counter], Period, CamMetric, HfxMetric;

SQLFiddle example

按错误聚合函数组

1 个答案: