Question

我是sql的新手并且正在努力寻找观点。这工作并提取我需要的正确数据作为表，但当我尝试作为一个视图我得到错误：

无法在网格窗格和图表窗格中表示SQL文本。

SELECT [Data_Collector_ID],
       [Batch_Info_ID],
       [AssetTag],
       [DateTimeStamp],
       [Dust_Collector_DP]
FROM (
    SELECT [Data_Collector_ID],
           [Batch_Info_ID],
           [AssetTag],
           [DateTimeStamp],
           [Dust_Collector_DP],
           ROW_NUMBER() OVER (PARTITION BY [Batch_Info_ID] ORDER BY [DateTimeStamp] DESC) rn
    FROM [PLCLogging].[dbo].[Coater_Data_Collector]
) tmp
WHERE rn = 1 AND ([DateTimeStamp] > DATEADD(DAY, -7, GETDATE()))
    OR rn = 2 AND ([DateTimeStamp] > DATEADD(DAY, -7, GETDATE()))
ORDER BY DateTimeStamp DESC

知道如何让它作为一种观点发挥作用吗？

我试图在过去一周内为每个Batch_Info_ID提取两个最近的值。如果我需要提供更多详细信息，请告诉我。

Answer 1

以下article讨论了视图设计器无法解释复杂查询的方式。

打开一个新的查询窗口并复制并粘贴以下文本并执行：

CREATE VIEW MyViewName
AS
    SELECT [Data_Collector_ID],
           [Batch_Info_ID],
           [AssetTag],
           [DateTimeStamp],
           [Dust_Collector_DP]
    FROM (
        SELECT [Data_Collector_ID],
               [Batch_Info_ID],
               [AssetTag],
               [DateTimeStamp],
               [Dust_Collector_DP],
               ROW_NUMBER() OVER (PARTITION BY [Batch_Info_ID] ORDER BY [DateTimeStamp] DESC) rn
        FROM [PLCLogging].[dbo].[Coater_Data_Collector]
    ) tmp
    WHERE rn = 1 AND ([DateTimeStamp] > DATEADD(DAY, -7, GETDATE()))
        OR rn = 2 AND ([DateTimeStamp] > DATEADD(DAY, -7, GETDATE()))
    ORDER BY DateTimeStamp DESC

在Microsoft SQL Server Management Studio中创建视图时遇到问题

1 个答案: