Question

我正在学习Microsoft的SQL Server 2012 Analysis Services。使用VisualStudio 2012插件完成了基本的AdventureWorks教程后，我现在正尝试使用DMX查询语言执行这些相同的过程。 / p>

我所指的教程可以在这里找到：

http://msdn.microsoft.com/en-us/library/4b634cc1-86dc-42ec-9804-a19292fe8448(v=sql.110)

我在Analysis Server中使用的数据库项目是BasicDataMining项目的项目，可以在完成BasicDataMining教程时找到：

http://msdn.microsoft.com/en-us/library/ms167167(v=sql.110).aspx

DMX教程的第一课很好地使用了以下查询来创建挖掘结构：

CREATE MINING STRUCTURE [Bike Buyer]
(
   [Customer Key] LONG KEY,
   [Age]LONG DISCRETIZED(Automatic,10),
   [Bike Buyer] LONG DISCRETE,
   [Commute Distance] TEXT DISCRETE,
   [Education] TEXT DISCRETE,
   [Gender] TEXT DISCRETE,
   [House Owner Flag] TEXT DISCRETE,
   [Marital Status] TEXT DISCRETE,
   [Number Cars Owned]LONG DISCRETE,
   [Number Children At Home]LONG DISCRETE,
   [Occupation] TEXT DISCRETE,
   [Region] TEXT DISCRETE,
   [Total Children]LONG DISCRETE,
   [Yearly Income] DOUBLE CONTINUOUS
)
WITH HOLDOUT (30 PERCENT or 1000 CASES)

当我到达第二课时，建议的查询不起作用：

ALTER MINING STRUCTURE [Bike Buyer]
ADD MINING MODEL [Decision Tree]
(
   CustomerKey,
   [Age],
   [Bike Buyer] PREDICT,
   [Commute Distance],
   [Education],
   [Gender],
   [House Owner Flag],
   [Marital Status],
   [Number Cars Owned],
   [Number Children At Home],
   [Occupation],
   [Region],
   [Total Children],
   [Yearly Income]
) USING Microsoft_Decision_Trees
WITH DRILLTHROUGH

提供以下错误：

Error (Data mining): The 'CustomerKey' source structure column for the 'CustomerKey'      mining model column was not found.

我很困惑如何解决这个问题，以及为什么微软自己的教程中的文字查询似乎不起作用。

我非常感谢能够帮助我解决此问题的任何见解并继续本教程。

Answer 1

ALTER MINING STRUCTURE [Bike Buyer]
ADD MINING MODEL [Decision Tree]
    (
       **[Customer Key]**,   <-- Missing space was the issue
       [Age],
       [Bike Buyer] PREDICT,
       [Commute Distance],
       [Education],
       [Gender],
       [House Owner Flag],
       [Marital Status],
       [Number Cars Owned],
       [Number Children At Home],
       [Occupation],
       [Region],
       [Total Children],
       [Yearly Income]
    ) USING Microsoft_Decision_Trees
    WITH DRILLTHROUGH

Microsoft MDX教程：找不到源结构列

1 个答案: