Question

我收到此错误

Msg 201，级别16，状态4，过程sp_GetAllAirports，第0行[批处理开始第2行]
过程或函数'sp_GetAllAirports'需要未提供的参数'@AirportID'。”

我跑步时

EXEC sp_GetAllAirports

以下是我的存储过程，其中显示了@AirportID，可能是什么问题？

IF OBJECT_ID('sp_GetAllAirports', 'P') IS NOT NULL
    DROP PROCEDURE [dbo].[sp_GetAllAirports]
GO

SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO

CREATE PROCEDURE [dbo].[sp_GetAllAirports]
    @AirportID INT,
    @ICAOCode VARCHAR(4) NULL,
    @AirportName VARCHAR(MAX),
    @City VARCHAR(MAX),
    @Lat DECIMAL(8,3),
    @Long DECIMAL (11,3),
    @Elevation INT,
    @Country NVARCHAR(MAX)
AS  
BEGIN TRANSACTION
BEGIN TRY
    SET NOCOUNT ON  
    SET ANSI_WARNINGS OFF  
    SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED  

    --SELECT * FROM tbl_Airports ORDER BY AirportID ASC

    SELECT 
        AirportID, ICAOCode, AirportName, City, 
        Latitude, Longitude, Elevation, CountryFK
    FROM 
        tbl_Airports 
    LEFT JOIN 
        tbl_Countries ON CountryID = tbl_Airports.CountryFK
    WHERE 
        CountryID = tbl_Airports.CountryFK
    ORDER BY 
        AirportID
END TRY
BEGIN CATCH
    DECLARE @ErMessage NVARCHAR(MAX),
            @ErSeverity INT,
            @ErState INT

    SELECT 
        @ErMessage = ERROR_MESSAGE(), 
        @ErSeverity = ERROR_SEVERITY(), 
        @ErState = ERROR_STATE()

    IF @@TRANCOUNT > 0
    BEGIN
        ROLLBACK TRANSACTION
    END

    RAISERROR(@ErMessage, @ErSeverity, @ErState)
END CATCH

IF @@TRANCOUNT > 0
BEGIN
    COMMIT TRANSACTION
END
GO

Answer 1

您的存储过程已定义为期望参数（AirportID，ICAOCode，AirportName，City，Lat，Long，{{ 1}}和Elevation）：

Country

但是，它不使用任何一个。因此，您可能只需要删除它们：

CREATE PROCEDURE [dbo].[sp_GetAllAirports]

@AirportID INT,
@ICAOCode VARCHAR(4) NULL,
@AirportName VARCHAR(MAX),
@City VARCHAR(MAX),
@Lat DECIMAL(8,3),
@Long DECIMAL (11,3),
@Elevation INT ,
@Country NVARCHAR(MAX)


AS  
...

或者，请确保在SP中使用了参数（这样可以合理地期望参数）并相应地传递值（CREATE PROCEDURE [dbo].[sp_GetAllAirports] AS ...），例如：

sp_GetAllAirports 1234

或者，最后，为参数提供默认值，例如：

CREATE PROCEDURE [dbo].[sp_GetAllAirports]

@AirportID INT

AS  

....

SELECT AirportID, ICAOCode, AirportName, City, Latitude, Longitude, Elevation, CountryFK
FROM tbl_Airports 
LEFT JOIN tbl_Countries ON CountryID = tbl_Airports.CountryFK
WHERE CountryID = tbl_Airports.CountryFK
    AND AirportID = @AirportID  -- Using first argument here
ORDER BY AirportID

....

这样，您将不必显式传递任何参数值。但是，您仍然需要使用参数使这些参数首先有意义。

如何解决存储过程的错误“期望参数”

1 个答案: