ASP中的慢存储过程.NET但是在SSMS中速度很快

Question

我在SQL管理工作室中运行得很快，但在ASP中要慢10倍。网络应用程序。是什么原因造成这种奇怪的行为和想法来解决它?

这是我的存储过程:

Create procedure [dbo].[CRFarmersGet]
  @Company        NVARCHAR(200) = NULL,
  @FName        NVARCHAR(50) = NULL,
  @SName        NVARCHAR(50) = NULL,
  @LName        NVARCHAR(50) = NULL,
  @PID            NVARCHAR(50) = NULL,
  @RegProvince    NVARCHAR(50) = NULL,
  @RegCity        NVARCHAR(50) = NULL,
  @ActCity  NVARCHAR(50) = NULL,
  @ActCommune  NVARCHAR(50) = NULL,
  @ActProvince  NVARCHAR(50) = NULL,
  @SCATTUAct NVARCHAR(50) = NULL,
  @Culture NVARCHAR(50) = NULL,
  @CultureCode NVARCHAR(50) = NULL,
  @Contracts SMALLINT = 0
WITH ENCRYPTION
As
BEGIN
    SET @Company = NULLIF(RTRIM(LTRIM(@Company)), '')
    SET @FName = NULLIF(RTRIM(LTRIM(@FName)), '')
    SET @SName = NULLIF(RTRIM(LTRIM(@SName)), '')
    SET @LName = NULLIF(RTRIM(LTRIM(@LName)), '')
    SET @PID = NULLIF(RTRIM(LTRIM(@PID)), '')
    SET @RegProvince = NULLIF(RTRIM(LTRIM(@RegProvince)), '')
    SET @RegCity = NULLIF(RTRIM(LTRIM(@RegCity)), '')
    SET @ActCity = NULLIF(RTRIM(LTRIM(@ActCity)), '')
    SET @ActCommune = NULLIF(RTRIM(LTRIM(@ActCommune)), '')
    SET @ActProvince = NULLIF(RTRIM(LTRIM(@ActProvince)), '')
    SET @SCATTUAct = NULLIF(RTRIM(LTRIM(@SCATTUAct)), '')
    SET @Culture = NULLIF(RTRIM(LTRIM(@Culture)), '')
    SET @CultureCode = NULLIF(RTRIM(LTRIM(@CultureCode)), '')

      select 
             f.[ID]
            ,f.[PID]
            ,f.[PIDType]
            ,f.[DerecognitionDate]
            ,f.[Company]
            ,f.[FName]
            ,f.[SName]
            ,f.[LName]
            ,l.ProvinceID as RegProvinceID
            ,l.Province as RegProvince
            ,l.CommuneID as RegCommuneID
            ,l.Commune as RegCommune
            ,f.[RegCityID]
            ,l.City as RegCity
            ,f.[AddrReg]
            ,f.[Sync]
            ,f.[D_Modify]
            ,f.[U_Modify]
            ,f.[Version]
      from CRFarmersT f
      join (select CityID, City, c.CommuneID, Commune, m.ProvinceID, Province from CitiesT c join MunicipalitiesT m on c.CommuneID = m.CommuneID join ProvincesT pr on m.ProvinceID = pr.ProvinceID) l on l.CityID = f.RegCityID
      LEFT JOIN dbo.CRFarmersDetailsT AS cfdt ON cfdt.FarmerID = f.ID
      LEFT JOIN (select CityID, City, c.CommuneID, Commune, m.ProvinceID, Province from CitiesT c join MunicipalitiesT m on c.CommuneID = m.CommuneID join ProvincesT pr on m.ProvinceID = pr.ProvinceID) fdl on fdl.CityID = cfdt.ActCityID
      LEFT JOIN dbo.CRCultures AS cc ON cc.ID = cfdt.CultureID
      LEFT JOIN dbo.CRContracts AS cc2 ON cc2.FarmerDetailID = cfdt.ID
     where 
        (f.Company like + '%' + rtrim(ltrim(@Company)) + '%' OR @Company IS NULL)
        AND (f.fName like + '%' + rtrim(ltrim(@FName)) + '%' OR @FName IS NULL)
        AND (f.SName like + '%' + rtrim(ltrim(@SName)) + '%' OR @SName IS NULL)
        AND (f.LName like + '%' + rtrim(ltrim(@LName)) + '%' OR @LName IS NULL)
        AND (f.PID like + '%' + rtrim(ltrim(@PID)) + '%' OR @PID IS NULL)
        AND (l.ProvinceID like + '%' + rtrim(ltrim(@RegProvince)) + '%' OR @RegProvince IS NULL)
        AND (l.City like + '%' + rtrim(ltrim(@RegCity)) + '%' OR @RegCity IS NULL)
        AND (fdl.City like + '%' + rtrim(ltrim(@ActCity)) + '%' OR @ActCity IS NULL)
        AND (fdl.Commune like + '%' + rtrim(ltrim(@ActCommune)) + '%' OR @ActCommune IS NULL)
        AND (fdl.Province like + '%' + rtrim(ltrim(@ActProvince)) + '%' OR @ActProvince IS NULL)
        AND (cfdt.[SCATTU-Activity] like + '%' + rtrim(ltrim(@SCATTUAct)) + '%' OR @SCATTUAct IS NULL)
        AND (cc.Name like + '%' + rtrim(ltrim(@Culture)) + '%' OR @Culture IS NULL)
        AND (cc.Code like + '%' + rtrim(ltrim(@CultureCode)) + '%' OR @CultureCode IS NULL)
        AND (@Contracts = 1 AND cc2.ID IS NOT NULL OR @Contracts = 0)
        AND exists(select 1 from dbo.UserRights('00000000-0000-0000-0000-000000000000') where RightID in (600, 601, 602, 612, 613))
        GROUP BY f.[ID]
            ,f.[PID]
            ,f.[PIDType]
            ,f.[DerecognitionDate]
            ,f.[Company]
            ,f.[FName]
            ,f.[SName]
            ,f.[LName]
            ,l.ProvinceID 
            ,l.Province 
            ,l.CommuneID 
            ,l.Commune 
            ,f.[RegCityID]
            ,l.City
            ,f.[AddrReg]
            ,f.[Sync]
            ,f.[D_Modify]
            ,f.[U_Modify]
            ,f.[Version]
      Order By PID
END
Go

Answer 1

可能是SSMS和ASP。. NET使用不同的执行计划。可以尝试的一件事是添加With Recompile，如:

Create procedure [dbo].[CRFarmersGet]
  @Company        NVARCHAR(200) = NULL,
  @FName        NVARCHAR(50) = NULL,
  @SName        NVARCHAR(50) = NULL,
  @LName        NVARCHAR(50) = NULL,
  @PID            NVARCHAR(50) = NULL,
  @RegProvince    NVARCHAR(50) = NULL,
  @RegCity        NVARCHAR(50) = NULL,
  @ActCity  NVARCHAR(50) = NULL,
  @ActCommune  NVARCHAR(50) = NULL,
  @ActProvince  NVARCHAR(50) = NULL,
  @SCATTUAct NVARCHAR(50) = NULL,
  @Culture NVARCHAR(50) = NULL,
  @CultureCode NVARCHAR(50) = NULL,
  @Contracts SMALLINT = 0
WITH ENCRYPTION, RECOMPILE

(我不确定加密和重新编译的语法是什么)

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