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我有一个从表中检索简单数据的存储过程。一年多来它工作得很好，但几天来选择数据需要 30 多秒。即使有时它不会在用户界面上显示任何内容。

如果我在 SQL Server Management Studio 中执行相同的存储过程，则需要 2-3 秒才能执行。我试图重新编译正在使用的表和过程，也增加了超时。但这没有帮助，我需要你的建议。

下面是我的存储过程：

 ALTER PROCEDURE [dbo].[sp_Monitoring_ver2]
    @AgentID int = NULL
 AS
 BEGIN
SET NOCOUNT ON;
 -- Insert statements for procedure here
 select ROW_NUMBER() OVER(order by AgentFullName ASC) as CodeID, res.*, DATEDIFF(mi, stsdate, getdate()) as MinFromLastSignal, DATEDIFF(MI, LastPaymentDateTime, getdate()) as MinFromLastPayment 
 from 
( 

     SELECT   s.AgentID, a.name+' '+a.surname as TerminalFullName, a.loginName, 
            s.KioskStatus, s.StsDate, s.TotalMoney, s.AmountMoney, s.MoneyInside, s.Version, s.PrinterErrorCode, s.ValidatorErrorCode,
            (select top(1) StatusDateTime from Payment where AgentID = s.AgentID order by PaymentID desc) as LastPaymentDateTime,
            prt.errtxt as PrinterErrorText, val.errtxt as ValidatorErrorText,
            s.IPAddress,
            b.AgentID as ParentID, b.[name]+' '+b.surname AS AgentFullName
            ,(SELECT TOP 1 i.RegDate FROM dbo.InkasaiyaOfTerm i WHERE i.AgentID=s.AgentID order by i.ID DESC) AS LastCollectionDate
            ,(SELECT TOP 1 i.Kol FROM dbo.InkasaiyaOfTerm i WHERE i.AgentID=s.AgentID order by i.ID DESC) AS LastCollectionQuantity
            ,(SELECT TOP 1 i.Summa FROM dbo.InkasaiyaOfTerm i WHERE i.AgentID=s.AgentID order by i.ID DESC) AS LastCollectionAmount
    FROM       StatusTerminal_ver2 s
                INNER JOIN ErrorCodeTerminal prt ON s.PrinterErrorCode = prt.ecode                
                INNER JOIN ErrorCodeTerminal val ON s.ValidatorErrorCode = val.ecode                
                INNER JOIN Agents a ON s.AgentID=a.AgentID
                INNER JOIN Agents b ON a.parentID=b.AgentID
    where s.AgentID IN (select AgentID FROM Agents WHERE hrccrt LIKE '%.'+CAST(@AgentID as varchar(10))+'.%' and agentType=2)
        and DATEDIFF(DAY, StsDate, GETDATE())<7
) as res
order by AgentFullName ASC
 END

什么是最好的解决方案？

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1 回答 1

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在开始设置的存储过程中：

设置阿里萨博特

如果它没有任何区别，那么会导致我的参数嗅探。sql server 已根据您传递的第一个参数完成查询并生成执行计划。该计划可能对其他参数不利。您可以使用优化子句。

于 2013-09-11T15:14:14.630 回答