T-SQL:事务和try-catch块中的ALTER VIEW错误

我使用的是SQL Server 2005和SQL Server 2005 Management Studio Express。我有一个具有以下方案的脚本:

USE [MyDatabase]
GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO

BEGIN TRANSACTION;
GO

BEGIN TRY
    ALTER VIEW dbo.MyView
    AS
    SELECT ...
    GO
    ALTER TABLE ...
    GO
    UPDATE dbo.MyTable ...
    GO
    INSERT INTO dbo.AnotherTable ...
    GO
END TRY
BEGIN CATCH
    SELECT 
        ERROR_NUMBER() AS ErrorNumber
        ,ERROR_SEVERITY() AS ErrorSeverity
        ,ERROR_STATE() AS ErrorState
        ,ERROR_PROCEDURE() AS ErrorProcedure
        ,ERROR_LINE() AS ErrorLine
        ,ERROR_MESSAGE() AS ErrorMessage;

    IF @@TRANCOUNT > 0
        ROLLBACK TRANSACTION;
END CATCH;

IF @@TRANCOUNT > 0
    COMMIT TRANSACTION;
GO

问题是我在ALTER VIEW dbo.MyView块中收到错误: “保留字'VIEW'附近语法错误。”