tsql - 为什么 SSRS 报告在开发中有效，但在生产中无效

Question

我有一个 SELECT 语句（不是存储过程），用于在 SSRS（Visual Studio 2010）中创建报告。

参数@ClassCode 是引起麻烦的参数。但是在开发中它工作正常，但是当我将它部署到生产时它会永远呈现。

我假设它是一个参数嗅探，并且我阅读了如何在存储过程中修复它。但我没有 SP，我使用的是 SELECT 语句。

SELECT 语句的解决方法是什么？环境之间有什么区别？生产要强大得多。我的查询如下：

;WITH cte1
AS
(
    SELECT  QuoteID,
             AccidentDate,
            PolicyNumber,
            SUM(PaidLosses) as PaidLosses
    FROM    tblLossesPlazaCommercialAuto
    WHERE   InsuredState IN  (@State)  AND AccidentDate BETWEEN @StartDate AND @EndDate AND TransactionDate <= @EndDate AND  Coverage = 'VehicleComprehensive'
    GROUP BY QuoteID,
            AccidentDate,
            PolicyNumber
),
cte3
AS
(
SELECT      
            cte1.Quoteid,
            cte1.PolicyNumber,
            cte1.AccidentDate,
            cc.TransactionEffectiveDate,
            cc.ClassCode,
                CASE
                WHEN ROW_NUMBER() OVER (PARTITION BY cte1.QuoteID, cte1.PolicyNumber,cc.AccidentDate ORDER BY (SELECT 0))=1 THEN cte1.PaidLosses 
                ELSE 0
            END  as PaidLosses--,
FROM        cte1 inner join tblClassCodesPlazaCommercial cc 
                        on cte1.PolicyNumber=cc.PolicyNumber 
                        AND cte1.AccidentDate=cc.AccidentDate
            AND cc.AccidentDate IS NOT NULL
    /* This is the one that gives me problem */
            WHERE  cc.ClassCode   IN (@ClassCode)
) 
SELECT  SUM(PaidLosses) as PaidLosses, c.YearNum, c.MonthNum
FROM    cte3 RIGHT JOIN tblCalendar  c ON c.YearNum = YEAR(cte3.AccidentDate) AND c.MonthNum = MONTH(cte3.AccidentDate)
WHERE   c.YearNum <>2017
GROUP BY  c.YearNum, c.MonthNum
ORDER BY  c.YearNum, c.MonthNum

Answer 1

使用 Tuning Advisor 查看哪些索引和统计信息需要工作负载。创建这些之后 - 一切正常。