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OLE-Automatisierungsbeispielskript

Dieses Thema enthält ein Beispiel für einen Transact-SQL-Anweisungsbatch, der mithilfe von gespeicherten OLE-Automatisierungsprozeduren ein SQL-DMO SQLServer-Objekt in der lokalen Instanz von Database Engine (Datenbankmodul) erstellt und verwendet. Teile des Codes werden als Beispiele in den Referenzthemen zu den gespeicherten Systemprozeduren der OLE-Automatisierung verwendet.

USE AdventureWorks;
GO
DECLARE @Object int;
DECLARE @HR int;
DECLARE @Property nvarchar(255);
DECLARE @Return nvarchar(255);
DECLARE @Source nvarchar(255), @Desc nvarchar(255);

-- Create a SQLServer object.
SET NOCOUNT ON;

-- First, create the object.
EXEC @HR = sp_OACreate N'SQLDMO.SQLServer',
    @Object OUT;
IF @HR <> 0
BEGIN
    -- Report the error.
    EXEC sp_OAGetErrorInfo @Object,
        @Source OUT,
        @Desc OUT;
    SELECT HR = convert(varbinary(4),@HR),
        Source=@Source,
        Description=@Desc;
    GOTO END_ROUTINE
END
ELSE
-- A DMO.SQLServer object has been successfully created.
BEGIN
    -- Specify Windows Authentication for connections.
    EXEC @HR = sp_OASetProperty @Object,
        N'LoginSecure',
        N'TRUE';
    IF @HR <> 0 GOTO CLEANUP

    -- Set a property.
    EXEC @HR = sp_OASetProperty @Object,
        N'HostName',
        N'SampleScript';
    IF @HR <> 0 GOTO CLEANUP

    -- Get a property using an output parameter.
    EXEC @HR = sp_OAGetProperty @Object, N'HostName', @Property OUT;
    IF @HR <> 0 
        GOTO CLEANUP
    ELSE
        PRINT @Property;

    -- Get a property using a result set.
    EXEC @HR = sp_OAGetProperty @Object,
        N'HostName';
    IF @HR <> 0 GOTO CLEANUP

    -- Get a property by calling the method.
    EXEC @HR = sp_OAMethod @Object,
        N'HostName',
        @Property OUT;
    IF @HR <> 0 
        GOTO CLEANUP
    ELSE
        PRINT @Property;

    -- Call the connect method.
    -- SECURITY NOTE - When possible, use Windows Authentication.
    EXEC @HR = sp_OAMethod @Object,
        N'Connect',
        NULL,
        N'localhost',
        NULL,
        NULL;
    IF @HR <> 0 GOTO CLEANUP

    -- Call a method that returns a value.
    EXEC @HR = sp_OAMethod @Object,
        N'VerifyConnection',
        @Return OUT;
    IF @HR <> 0
        GOTO CLEANUP
    ELSE
        PRINT @Return;
END

CLEANUP:
-- Check whether an error occurred.
IF @HR <> 0
BEGIN
    -- Report the error.
    EXEC sp_OAGetErrorInfo @Object,
        @Source OUT,
        @Desc OUT;
    SELECT HR = convert(varbinary(4),@HR),
        Source=@Source,
        Description=@Desc;
END

-- Destroy the object.
BEGIN
    EXEC @HR = sp_OADestroy @Object;
    -- Check if an error occurred.
    IF @HR <> 0 
    BEGIN
        -- Report the error.
        EXEC sp_OAGetErrorInfo @Object,
        @Source OUT,
        @Desc OUT;
        SELECT HR = convert(varbinary(4),@HR),
        Source=@Source,
        Description=@Desc;
    END
END

END_ROUTINE:
RETURN;
GO