SAS：Proc Olap。非聚合聚合

Question

我想製作Rolap-cube。

在創建表之後，我使用宏生成在proc olap中編寫Aggregation語句。

而且看到警告和錯誤是這樣的：

WARNING: You cannot use NAME "DEFAULT" in the AGGREGATION statement for a non-NWAY aggregation. 
NOTE: The aggregation name "DEFAULT" was changed to "AGGR1". 

ERROR: An input data set was not specified. 

有什麼不對？ （我不特定的數據集，因爲我有表的大數目，我想在Rolap-cube使用）

增加： 如果我有這樣的尺寸：

DIMENSION MyDim hierarchies=(First Second) 

HIERARCHY First 
    levels=(A B D) 
    DEFAULT 
    ; 
HIERARCHY Second 
    levels=(C D)  
    ; 

D是最小的水平，它有兩個層次：D belond to B belong to A和D belong to C

如果我指定與水平彙總表：
1）A B D
2）A B
3）A
4）C D
5）C
6）none

然後SAS對我說，我不指定輸入數據集。 （聚合表之一）。

但是這6個聚集涵蓋所有可能的detalizations（沒有交叉覆蓋detalization像A B C D或A C D）

Answer 1

在PROC OLAP DATA=選項，你應該爲立方體

1. 要麼全非規範化的指定數據源表格/視圖（星圖模式事實和 尺寸表的連接）或
2. 只是事實表（您也可以參考它作爲FACT=選項清除）。

在情況2中，還必須提供（通常是幾個）包含參照維度表中DIMTBL=library.tablname選項DIMENSION ...;語句。從http://support.sas.com/documentation/cdl/en/olapug/59574/HTML/default/viewer.htm#a002605625.htm

> DATA | FACT=dsname 
> 
>  specifies the data source for the cube. The unsummarized data source can be any SAS data file, including files that are supported by 
> SAS/ACCESS software engines. If you load the cube from a star schema, 
> then the dsname is the name of the fact table that contains the 
> analysis variables from which to derive the measures for the cube. The 
> fact table must also contain fact keys that correspond to dimension 
> tables in the star schema. 
> 
>  You can also provide data set options along with DATA | FACT=. Options are stored within the cube and reapplied when the data is 
> accessed at run time. For more information, see "Data Set Options" in 
> SAS Language Reference: Concepts. 
> 
>  Note: This option is not required if you want to define the cube by using input data from a fully summarized external data source (a 
> crossing of all dimensions known as an NWAY). In that case, you 
> specify the data source for the cube by using the TABLE= option in the 
> AGGREGATION statement. [cautionend] 
>  Interaction: If you load the cube from a star schema, then you must use the DIMENSION statement to do the following: 
> 
>   specify the dimension table name (the DIMTBL= option) 
> 
>   specify the dimension (primary) key column (the DIMKEY= option) 
> 
>   specify the column (foreign key) in the fact table that corresponds to the dimension key column (the FACTKEY= option) 

編輯

摘錄：

可以有多個層次結構的一個維。他們（他們的專欄）必須駐留在非規格化的基本表格或DIMENSION語句中DIMTBL=選項中引用的一個維表中。

因此，如果您使用星型模式構建多維數據集，則每個維度和一個事實表應該有一個表。 每個維度表應包含定義一個或多個層次結構所需的所有列。

萊斯的說，在你的情況下，尺寸MyDim被包含在庫MyLib中表MyDim - 相關語句應該是：

DIMENSION MyDim hierarchies=(First Second) 
    DIMKEY=D 
    DIMTBL=MyLib.MyDim 
    ; 

HIERARCHY First 
    levels=(A B D) 
    DEFAULT 
    ; 
HIERARCHY Second 
    levels=(C D)  
    ;