Question

Project nr      Task                  Task deadline    Task Type Production
---------------------------------------------------------------------------
456             packed                1 april 2013      Packed
456             Leave production      3 april 2013      Leave Production
456             Flight date           9 april 2013      Flight Date
123             packed                1 april 2013      Packed
123             Leave production      6 april 2013      Leave Production
123             Flight date           9 april 2013      Flight Date
789             packed                1 april 2013      Packed
789             Leave production      9 april 2013      Leave Production
789             Flight date           9 april 2013      Flight Date

我需要一个上面的列表我想在“离开生产”的日期排序项目nr必须像上面的列表一样保持3组。

我已经有了这个SQL。该列表正在运行，但排序无效。错误是：

无法绑定多部分标识符“task。[task deadline]”。

我已经有了一个建议，但仍然有错误。我如何获得排序？

这是我得到的清单：

Project Nr     Task             TaskDate
0053           Packed           2013-02-05 17:00:00.000
0053           Leave Production 2011-04-26 17:00:00.000
0053           Flight Date      2011-04-22 17:00:00.000
0071           Leave Production 2011-06-24 17:00:00.000
0081           Leave Production 2012-03-09 17:00:00.000
0081-01        Leave Production 2012-03-09 17:00:00.000

这是SQL查询：

SELECT  
    [Project nr], Task, TaskDate
FROM    
    (SELECT   
        MSP_EpmProject_UserView.[Project nr]
        ,MAX(CASE WHEN [Task Type Production] = 'Packed' 
                  THEN [Task deadline] 
             END) AS Packed
        ,MAX(CASE WHEN [Task Type Production] = 'Leave Production' 
                  THEN [Task deadline]
             END) AS [Leave Production]
        ,MAX(CASE WHEN [Task Type Production] = 'Flight Date' 
                  THEN [Task deadline]
             END) AS [Flight Date]
     FROM 
        MSP_EpmProject_UserView 
     LEFT JOIN 
        MSP_EpmTask_UserView ON MSP_EpmProject_UserView.ProjectUID = MSP_EpmTask_UserView.ProjectUID 
     LEFT JOIN 
        MSP_EpmAssignment_UserView ON MSP_EpmTask_UserView.TaskUID = MSP_EpmAssignment_UserView.TaskUID 
     LEFT JOIN 
        MSP_EpmResource_UserView ON MSP_EpmAssignment_UserView.ResourceUID = MSP_EpmResource_UserView.ResourceUID 
     WHERE 
        (MSP_EpmTask_UserView.TaskIsProjectSummary = 0) 
     GROUP BY 
        MSP_EpmProject_UserView.[Project nr]) data
UNPIVOT
    (TaskDate
       FOR [Task] IN ([Pack], [Leave Production], [Flight Date])
    ) piv

这一行应该排序：

ORDER BY data.[Task deadline]

但是我收到了错误

Msg 4104，Level 16，State 1，Line 62
无法绑定多部分标识符“data.Taskdeadline”。

Answer 1

您别名为data的子查询只是没有返回名为Taskdeadline的列

从SQL语句中可以看出 - 该子查询包含列：

[Project nr]
Packed
[Leave Production]
[Flight Date]

但这就是全部 - 没有Taskdeadline无处可见......

因此，很明显，您不能在ORDER BY子句中使用该不存在的列。

排序时多部分标识符错误

1 个答案: