如何將使用動態SQL的存儲過程轉換爲非動態SQL（SSRS）？

Question

我一直在工作SSRS報告，以及對我的一個存儲過程，它使用動態SQL suchthat我得到這個錯誤：

An item with the same key has already been added. 

所以我GOOGLE了這個錯誤了一點，但它的仍然朦朧到我..

我的存儲過程發生在那些肘杆式幾個參數，如跟隨着：

@CompleteType INT = NULL, 
/* 
* 0 - Routed 
* 1 - Targeted 
* 2 - Offerwall 
*/ 

@SourceType BIT = NULL, 
/* 
* Works if @AccountID is not null 
* (should only be used if @AccountID has a single value) 
* 
* 0 - Owned by @AccountID 
* 1 - External (not owned by @AccountID) 
*/ 

@SurveyStatus INT = NULL, 
/* 
* NULL - All Surveys 
* 0 - Completes Approved Surveys 
* 1 - Invoiced Surveys 
*/ 

@IsSupplierUser BIT = 0 
/* 
* used to decide whether to display FEDSurveyName or SupplierSurveyName 

在這兩個代碼塊在這裏發生的問題（他們不是連續）：

-- Initial Survey Name 
    IF @IsSupplierUser = 0 
     SET @SQL += CHAR(13) + CHAR(9) + N' ,ts.FEDSurveyName as ''Initial Survey Name''' 

    ELSE 
     SET @SQL += CHAR(13) + CHAR(9) + N' ,ts.SupplierSurveyName as ''Initial Survey Name''' 

那麼這一個：

-- Complete Survey Name 
IF @IsSupplierUser = 0 
    SET @SQL += CHAR(13) + CHAR(9) + N' ,cs.FEDSurveyName as ''Complete Survey Name''' 
ELSE 
    SET @SQL += CHAR(13) + CHAR(9) + N' ,cs.SupplierSurveyName as ''Complete Survey Name''' 

我們分別既是ts.FEDSurveyName和cs.FEDSurveyName，與同爲SupplierSurveyName。我感謝任何提示！謝謝

Answer 1

DECLARE 
@IsSupplierUser BIT = 0, 
@SQL NVARCHAR(MAX) ='init' 
-- Initial Survey Name 
SELECT @SQL += CASE @IsSupplierUser 
    WHEN 0 THEN CHAR(13) + CHAR(9) + N' ,ts.FEDSurveyName' 
    ELSE CHAR(13) + CHAR(9) + N' ,ts.SupplierSurveyName' 
END + N' as ''Initial Survey Name''' 
SELECT @SQL 

http://www.sqlfiddle.com/#!3/d41d8/10397

Answer 2

我認爲這些代碼段用於生成您的選擇列表。要將其轉換爲非動態SQL：

SELECT 
    CASE 
    When @IsSupplierUser = 0 Then ts.FEDSurveyName 
    Else ts.SupplierSurveyName 
    END as 'Initial Survey Name', 
    ts.SomeOtherColumn, 
    etc. 
    ... 
FROM ... 

當然「等」只是表示您繼續使用其他列，您可以爲顯示的其他條件列創建另一個案例語句。