在WHERE子句

Question

下面用例是代碼：

CREATE PROCEDURE [dbo].[PR_CDMS_ADMIN_GET_SECURITY_INFO] ( 
DECLARE @chvMajorCatgry varchar(50) 
DECLARE @chvMinorCatgry varchar(50) 

)  
AS   

if (@chvMajorCatgry = 'yyy') 
    begin 
     select caf.ACTN_FACT_SID    
     from CDMS_ACTN_FACT caf  
     where caf.ACTN_SID in (select ACTN_SID from CDMS_ACTN where ACTN_CATGRY_CD = 'yyy') 
     print @chvMajorCatgry 
    end 
    print @chvMajorCatgry 
else if (@chvMajorCatgry = 'zzz') 
    begin 
     select caf.ACTN_FACT_SID   
     from CDMS_ACTN_FACT caf  
     where caf.ACTN_SID = (select ACTN_SID from CDMS_ACTN where ACTN_CATGRY_CD = 'zzz' and ACTN_CD = @chvMinorCatgry)   
    end 

如何處理這有一個SELECT語句？

Answer 1

Bleh，這是粗糙的。試試這個：

select caf.ACTN_FACT_SID   
    from CDMS_ACTN_FACT caf  
    where caf.ACTN_SID IN (
       select ACTN_SID 
       from CDMS_ACTN 
       where ( 
         @chvMinorCatgry = 'zzz' 
         AND ACTN_CATGRY_CD = 'Attribute' 
         AND ACTN_CD = @chvMinorCatgry) 
        ) 
       OR (
         @chvMinorCatgry = 'yyy' 
         AND ACTN_CATGRY_CD = 'Account' 
        ) 
      ) 

Answer 2

請在下面找到我的建議。您可能需要在子查詢中的case語句末尾更改通配符，具體取決於ACTN_CD列的數據類型。

CREATE PROCEDURE [dbo].[PR_CDMS_ADMIN_GET_SECURITY_INFO] ( 
    @chvMajorCatgry varchar(50), 
@chvMinorCatgry varchar(50) 
--SET @chvMajorCatgry = 'Account' 
)  
AS  

select caf.ACTN_FACT_SID    
from CDMS_ACTN_FACT caf  
where caf.ACTN_SID in (
         select ACTN_SID 
         from CDMS_ACTN 
         where ACTN_CATGRY_CD = @chvMajorCatgry 
         and ACTN_CD like case @chvmajorcatgry when 'Attribute' then @chvMinorCatgry else '%' end)