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Question

我希望添加＆＃39; if else＆＃39; where子句中的条件，但不知道我该怎么做。查看下面的表集，我试图过滤查询将提取所有产品系列子类型的结果，并仅在 [Product Line Subtype] =＆＃39; Marine＆＃39; 。当它是Marine时，它应该只考虑 Section 和 Profit Code 的两种组合，同时省略其他组合。

组合1 当Prod line Subtype = Marine时，Section = Inland和Profit Code = Builders

组合2 当Prod line Subtype = Marine时，Section = Ocean and Profit Code = Stocks

当Prod line Subtype = Marine时，我的实际表具有比下表所示更大的不同组合集，但我只想过滤上述两种组合到我的结果集。任何帮助将不胜感激！

主要表格

+--+------------------+-------------+-----------------+
|  |Prod line Subtype | Section     |  Profit Code    |
+--+------------------+-------------+-----------------+
|  | Marine           | Inland      |  Builders       |
|  | Marine           | Ocean       |  Stock          | 
|  | Property         | General     |  Transport      |  
|  | Energy           | Source      |  Others         |  
|  | Property         | General     |  Transport      |   
|  | Energy           | Source      |  Transport      |  
|  | Marine           | Inland      |  Transport      |    
|  | Marine           | Floaters    |  Transport      |    
|  | Marine           | Cargo       |  Others         |    
+--+------------------+-------------+---------------- + 

预期结果

+--+------------------+-------------+-----------------+
|  |Prod line Subtype | Section     |  Profit Code    |
+--+------------------+-------------+-----------------+
|  | Marine           | Inland      |  Builders       |
|  | Marine           | Ocean       |  Stock          | 
|  | Property         | General     |  Transport      |  
|  | Energy           | Source      |  Others         |  
|  | Property         | General     |  Transport      |   
|  | Energy           | Source      |  Transport      |  
+--+------------------+-------------+---------------- + 

我的查询尝试：

select *
from #Step1 
where c1.row_ord = 1
and c1.[Prod Line Subtype]  = 'Marine' AND (
    (c1.[Section] = 'Inland' AND c1.[Profit Code] = 'Builder')
    OR (c1.[Section] = 'Ocean' AND c1.[Profit Code] = 'Stock')
)

Answer 1

怎么样：

    Select * from [Your table]
    Where ([Prod line Subtype]<>'Marine' Or 
       (Section='Inland' And [Profit Code]='Builders') Or
       (Section='Ocean' And [Profit Code]='Stocks')    
    )

可以省略[Prod line Subtype] ='Marine'或条件