将占位符值更改为用户输入

Question

我相信这是解决问题的正确方法，但如果还有其他方法，请告诉我。

对于我的报告，用户输入开始日期、结束日期和供应商 ID。 在我的报告中，我还有四个受用户输入影响的变量。这就是问题所在，目前这些变量的日期和供应商 ID 是硬编码的，下面是一个示例：

(
    SELECT SUM( ROUND([DCT].[Quantity_Stk] *[ICP].[UnitCost], 2 ))
    FROM IC_Products [PC] 
        INNER JOIN  DC_Transactions [DCT] 
         ON [PC].ProductKey = [DCT].ProductKey
        INNER JOIN  AR_Customers 
         ON [DCT].CustomerKey = AR_Customers.CustomerKey
        INNER JOIN  IC_ProductLots [ICPL] 
         ON [DCT].LotKey = [ICPL].LotKey
        LEFT OUTER JOIN  IC_ProductCosts [ICP] 
         ON ICP.ProductKey=PC.ProductKey and ICP.ProductCostCode=5
    WHERE  (ICPL.ProductionDate >= { ts '2015-04-24 00:00:00' }   AND (ICPL.ProductionDate <= { ts '2015-04-24 00:00:00' } OR ICPL.ProductionDate Is Null)) 
AND ((1=1)  AND AR_Customers.CustomerKey IN (124) ) 
  ) - @Cost

我知道我可以添加占位符，例如：

declare @d1 datetime,
        @d2 datetime,
        @sID int;
set @d1 = 'user's input start date';
set @d2 = 'user's input end date';
set @sID = 'user's selected supplier ID';

然后在变量的WHERE语句中填写@d1、@d2、@sID。

目前整个报告的 WHERE 语句如下所示：

WHERE 
    (IC_ProductLots.ProductionDate >= { ts '2015-04-24 00:00:00' }   
    AND (IC_ProductLots.ProductionDate <= { ts '2015-04-24 00:00:00' } 
         OR IC_ProductLots.ProductionDate IS NULL)) 
    AND ((1=1)  
         AND AR_Customers.CustomerKey IN (123) ) 

因此，当用户单击“打印”时，会弹出一个对话框，他们选择开始日期、结束日期和供应商键，这就是填充主要 WHERE 语句的内容，但是我不确定如何使其相关到我的变量中的 WHERE 语句。

我使用的是 Microsoft SQL 2005，除了 SQL 之外没有其他语言。但是，这是一款具有预建功能和用户输入信息的 GUI。

如果您需要更多信息，请告诉我。

完整代码：

SET NOCOUNT ON; 
DECLARE @PurchaseCost Decimal(19,8);
DECLARE @InputWeight Decimal(19,8);
DECLARE @Shrink Decimal(19,8);
DECLARE @Prod_CostLBS Decimal(19,8);
DECLARE @Cost Decimal(19,8);
DECLARE @Profit Decimal(19,8);
DECLARE @Proj Decimal(19,8);

SET @PurchaseCost = 2.58;
SET @InputWeight = 18100;
SET @Shrink  = @InputWeight - (
 SELECT Sum([ICPL].[OriginalQuantity_Stk])
 FROM IC_Products [PC] 
 INNER JOIN DC_Transactions [DCT] 
 ON [PC].ProductKey = [DCT].ProductKey
 INNER JOIN AR_Customers 
 ON [DCT].CustomerKey = AR_Customers.CustomerKey
 INNER JOIN IC_ProductLots [ICPL] 
 ON [DCT].LotKey = [ICPL].LotKey
 LEFT OUTER JOIN IC_ProductCosts [ICP] 
 ON ICP.ProductKey=PC.ProductKey and ICP.ProductCostCode=5
 WHERE (ICPL.ProductionDate >= { ts '2015-06-24 00:00:00' } AND (ICPL.ProductionDate <= { ts '2015-06-24 00:00:00' } OR ICPL.ProductionDate Is Null)) 
AND ((1=1) AND AR_Customers.CustomerKey IN (124)) 
);
SET @Prod_CostLBS  = .15;
SET @Cost  = ROUND((@PurchaseCost + @Prod_CostLBS) * (
 SELECT Sum([ICPL].[OriginalQuantity_Stk])
 FROM IC_Products [PC] 
 INNER JOIN DC_Transactions [DCT] 
 ON [PC].ProductKey = [DCT].ProductKey
 INNER JOIN AR_Customers 
 ON [DCT].CustomerKey = AR_Customers.CustomerKey
 INNER JOIN IC_ProductLots [ICPL] 
 ON [DCT].LotKey = [ICPL].LotKey
 LEFT OUTER JOIN IC_ProductCosts [ICP] 
 ON ICP.ProductKey=PC.ProductKey and ICP.ProductCostCode=5
 WHERE (ICPL.ProductionDate >= { ts '2015-06-24 00:00:00' } AND (ICPL.ProductionDate <= { ts '2015-06-24 00:00:00' } OR ICPL.ProductionDate Is Null)) 
AND ((1=1) AND AR_Customers.CustomerKey IN (124)) 
), 2);
SET @Profit  = (
 SELECT SUM(ROUND([DCT].[Quantity_Stk] *[ICP].[UnitCost], 2))
 FROM IC_Products [PC] 
 INNER JOIN DC_Transactions [DCT] 
 ON [PC].ProductKey = [DCT].ProductKey
 INNER JOIN AR_Customers 
 ON [DCT].CustomerKey = AR_Customers.CustomerKey
 INNER JOIN IC_ProductLots [ICPL] 
 ON [DCT].LotKey = [ICPL].LotKey
 LEFT OUTER JOIN IC_ProductCosts [ICP] 
 ON ICP.ProductKey=PC.ProductKey and ICP.ProductCostCode=5
 WHERE (ICPL.ProductionDate >= { ts '2015-06-24 00:00:00' } AND (ICPL.ProductionDate <= { ts '2015-06-24 00:00:00' } OR ICPL.ProductionDate Is Null)) 
AND ((1=1) AND AR_Customers.CustomerKey IN (124)) 
) - @Cost;
SET @Proj  = ROUND((@Profit) / (
 SELECT Sum([ICPL].[OriginalQuantity_Stk])
 FROM IC_Products [PC] 
 INNER JOIN DC_Transactions [DCT] 
 ON [PC].ProductKey = [DCT].ProductKey
 INNER JOIN AR_Customers 
 ON [DCT].CustomerKey = AR_Customers.CustomerKey
 INNER JOIN IC_ProductLots [ICPL] 
 ON [DCT].LotKey = [ICPL].LotKey
 LEFT OUTER JOIN IC_ProductCosts [ICP] 
 ON ICP.ProductKey=PC.ProductKey and ICP.ProductCostCode=5
 WHERE (ICPL.ProductionDate >= { ts '2015-06-24 00:00:00' } AND (ICPL.ProductionDate <= { ts '2015-06-24 00:00:00' } OR ICPL.ProductionDate Is Null)) 
AND ((1=1) AND AR_Customers.CustomerKey IN (124)) 
), 2)
;

SELECT DISTINCT 
     CAST([AR_Customers].[CustomerCode] AS NVARCHAR(40)) + ' - ' + CAST([AR_Customers].[Name] AS NVARCHAR(40)) AS [Supplier]
   , [PC].ProductCode
   , [PC].Description1
   , Count(IC_ProductLots.OriginalQuantity_Alt) AS [Boxes]
   , IC_ProductLots.UnitOfMeasure_Alt
   , Sum(IC_ProductLots.OriginalQuantity_Stk) AS [Weight]
   , IC_ProductLots.UnitOfMeasure_Stk
   , [ICP].UnitCost AS [Unit Cost]
   , Sum(ROUND([DCT].[Quantity_Stk] *[ICP].[UnitCost], 2)) AS [Total Sales]
   , Avg(([IC_ProductLots].[OriginalQuantity_Stk] / [IC_ProductLots].[OriginalQuantity_Alt])) AS [Avg. Box Weight]
   , Sum([IC_ProductLots].[OriginalQuantity_Stk] / @InputWeight) AS [Yield]
   , @Shrink AS [Shrink]
   , @Cost AS [Cost]
   , @Profit AS [Profit]
   , @Proj AS [Proj]
 FROM (((( IC_Products [PC] 
    INNER JOIN  DC_Transactions [DCT] 
     ON [PC].ProductKey = [DCT].ProductKey)
    INNER JOIN  AR_Customers 
     ON [DCT].CustomerKey = AR_Customers.CustomerKey)
    INNER JOIN  IC_ProductLots 
     ON [DCT].LotKey = IC_ProductLots.LotKey)
    LEFT OUTER JOIN  IC_ProductCosts [ICP] 
     ON ICP.ProductKey=PC.ProductKey and ICP.ProductCostCode=5)
 **WHERE 
    (IC_ProductLots.ProductionDate >= { ts '2015-06-24 00:00:00' }   AND (IC_ProductLots.ProductionDate <= { ts '2015-06-24 00:00:00' } OR IC_ProductLots.ProductionDate Is Null)) 
AND ((1=1)  AND AR_Customers.CustomerKey IN (124) )** 
 GROUP BY 
     CAST([AR_Customers].[CustomerCode] AS NVARCHAR(40)) + ' - ' + CAST([AR_Customers].[Name] AS NVARCHAR(40))
   , [PC].ProductCode
   , [PC].Description1
   , IC_ProductLots.UnitOfMeasure_Alt
   , IC_ProductLots.UnitOfMeasure_Stk
   , [ICP].UnitCost
   , IC_ProductLots.ProductionDate
   , AR_Customers.CustomerKey
 ORDER BY 
     CAST([AR_Customers].[CustomerCode] AS NVARCHAR(40)) + ' - ' + CAST([AR_Customers].[Name] AS NVARCHAR(40))

** 包围的 WHERE 代码是由用户输入填充的代码，其他 WHERE 代码是硬编码的，但我需要将硬编码的代码更改为主要的 WHERE 代码。

Answer 1

WHERE 
    (IC_ProductLots.ProductionDate >= @d1  
    AND (IC_ProductLots.ProductionDate <= @d2
         OR IC_ProductLots.ProductionDate IS NULL)) 
    AND ( AR_Customers.CustomerKey =@sID ) 

听起来你需要做的就是将这些变量放在你的 where 子句中，而不是你正在使用的文字中。

Answer 2

只要在 Where 子句之前声明变量 - 变量就可以放在 where 子句中：

来源样本：

DECLARE @EmpIDVar INT

SET @EmpIDVar = 1234

SELECT *
FROM Employees
WHERE EmployeeID = @EmpIDVar

来源：https://technet.microsoft.com/en-us/library/aa212846(v=sql.80).aspx

祝你好运！