Question

我正在使用LIMS数据库软件，并试图为我们的分析师简化事情。

最初，我有一个直接的案例说明，对我们使用的每个“测试”都非常有用

CASE

WHEN ([Dry Fertilizer].[Phosphorus ICP (< 6.99 Guar)].[Phosphorus] < ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee]-0.67)) 

THEN -1 ELSE 0

END

另一个

CASE
    WHEN ([Dry Fertilizer].[Phosphorus ICP (10-13.99 Guar)].[Phosphorus] < ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee]-0.69)) THEN -1
    ELSE 0
END

目的是查看测试结果[磷]，将其与已知数字[保证]进行比较，然后计算并输出“ -1”（如果该数字低于此值，则表示失败，否则为“ 0”并通过）。

现在，我没有对每个“保证”进行不同的测试，而是查看所有这些数字并进行了相当大的计算，但是当我尝试运行计算时，我的软件挂起了。我该怎么做以简化此代码或使其起作用？这是代码：

CASE    When ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee] =4) Then
    Case When ([Dry Fertilizer].[Phosphorus ICP].[Phosphorus] < ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee]-0.67)) THEN -1 ELSE 0 End

When ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee] =5) Then
    Case When ([Dry Fertilizer].[Phosphorus ICP].[Phosphorus] < ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee]-0.67)) THEN -1 ELSE 0 End 

When ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee] =6) Then
    Case When ([Dry Fertilizer].[Phosphorus ICP].[Phosphorus] < ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee]-0.67)) THEN -1 ELSE 0 End 

When ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee] =7) Then
    Case When ([Dry Fertilizer].[Phosphorus ICP].[Phosphorus] < ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee]-0.68)) THEN -1 ELSE 0 End 

When ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee] =8) Then
    Case When ([Dry Fertilizer].[Phosphorus ICP].[Phosphorus] < ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee]-0.68)) THEN -1 ELSE 0 End 

When ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee] =9) Then
    Case When ([Dry Fertilizer].[Phosphorus ICP].[Phosphorus] < ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee]-0.68)) THEN -1 ELSE 0 End 

When ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee] =10) Then
    Case When ([Dry Fertilizer].[Phosphorus ICP].[Phosphorus] < ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee]-0.69)) THEN -1 ELSE 0 End 

When ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee] =12) Then
    Case When ([Dry Fertilizer].[Phosphorus ICP].[Phosphorus] < ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee]-0.69)) THEN -1 ELSE 0 End 

When ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee] =14) Then
    Case When ([Dry Fertilizer].[Phosphorus ICP].[Phosphorus] < ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee]-0.7)) THEN -1 ELSE 0 End 

When ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee] =16) Then
    Case When ([Dry Fertilizer].[Phosphorus ICP].[Phosphorus] < ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee]-0.7)) THEN -1 ELSE 0 End 

When ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee] =18) Then
    Case When ([Dry Fertilizer].[Phosphorus ICP].[Phosphorus] < ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee]-0.71)) THEN -1 ELSE 0 End 

When ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee] =20) Then
    Case When ([Dry Fertilizer].[Phosphorus ICP].[Phosphorus] < ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee]-0.72)) THEN -1 ELSE 0 End 

When ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee] =22) Then
    Case When ([Dry Fertilizer].[Phosphorus ICP].[Phosphorus] < ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee]-0.72)) THEN -1 ELSE 0 End 

When ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee] =24) Then
    Case When ([Dry Fertilizer].[Phosphorus ICP].[Phosphorus] < ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee]-0.73)) THEN -1 ELSE 0 End 

When ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee] =26) Then
    Case When ([Dry Fertilizer].[Phosphorus ICP].[Phosphorus] < ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee]-0.73)) THEN -1 ELSE 0 End 

When ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee] =28) Then
    Case When ([Dry Fertilizer].[Phosphorus ICP].[Phosphorus] < ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee]-0.74)) THEN -1 ELSE 0 End 

When ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee] =30) Then
    Case When ([Dry Fertilizer].[Phosphorus ICP].[Phosphorus] < ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee]-0.75)) THEN -1 ELSE 0 End 

When ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee] =32) Then
    Case When ([Dry Fertilizer].[Phosphorus ICP].[Phosphorus] < ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee]-0.76)) THEN -1 ELSE 0 End 

When ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee] =34) Then
    Case When ([Dry Fertilizer].[Phosphorus ICP].[Phosphorus] < ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee]-0.794)) THEN -1 ELSE 0 End 

When ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee] =36) Then
    Case When ([Dry Fertilizer].[Phosphorus ICP].[Phosphorus] < ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee]-0.828)) THEN -1 ELSE 0 End 

When ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee] =38) Then
    Case When ([Dry Fertilizer].[Phosphorus ICP].[Phosphorus] < ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee]-0.862)) THEN -1 ELSE 0 End 

When ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee] =40) Then
    Case When ([Dry Fertilizer].[Phosphorus ICP].[Phosphorus] < ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee]-0.896)) THEN -1 ELSE 0 End 

When ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee] =42) Then
    Case When ([Dry Fertilizer].[Phosphorus ICP].[Phosphorus] < ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee]-0.93)) THEN -1 ELSE 0 End 

When ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee] =44) Then
    Case When ([Dry Fertilizer].[Phosphorus ICP].[Phosphorus] < ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee]-0.964)) THEN -1 ELSE 0 End 

When ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee] =46) Then
    Case When ([Dry Fertilizer].[Phosphorus ICP].[Phosphorus] < ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee]-0.998)) THEN -1 ELSE 0 End 

When ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee] =48) Then
    Case When ([Dry Fertilizer].[Phosphorus ICP].[Phosphorus] < ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee]-1.032)) THEN -1 ELSE 0 End 

When ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee] =50) Then
    Case When ([Dry Fertilizer].[Phosphorus ICP].[Phosphorus] < ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee]-1.066)) THEN -1 ELSE 0 End 

When ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee] =52) Then
    Case When ([Dry Fertilizer].[Phosphorus ICP].[Phosphorus] < ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee]-1.1)) THEN -1 ELSE 0 End 


End

Answer 1

为什么需要嵌套的CASE，您可以简单地使用AND

 SELECT CASE When ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee] =4) AND ([Dry Fertilizer].[Phosphorus ICP].[Phosphorus] < ([Dry Fertilizer].[Phosphorus Guarantee].[Phosphorus Guarantee]-0.67)) THEN -1 
 WHEN
 WHEN
 WHEN ETC
 ELSE 0 END AS [YOURCOL]

案例表达式内的案例表达式

1 个答案: