Question

在我正在处理的MVC Web应用程序中，我有4个特定的表，这些表是为角色身份验证使用和自动生成的。在我创建了一个迁移并为我的数据库设定种子之后，我运行了创建这4个表的应用程序。

每当我必须修改我的模型时，由于我的Users表上的引用约束，我被迫删除这4个表。 VS2012不允许我选择所有4个表并立即删除，所以我想知道是否有办法让我创建一个存储过程我可以执行以便立即运行4个Drop Scripts吗？

在Server Explorer下，我右键点击Stored Prcoedures，然后选择Add New Stored Procedure。然后我会看到以下模板：

CREATE PROCEDURE [dbo].[Procedure]
    @param1 int = 0,
    @param2 int
AS
    SELECT @param1, @param2
RETURN 0

通过GUI，当我单击每个表的DELETE时，我复制了以下自动生成的DROP Table命令。

如何在VS2012中创建存储过程（或多个？）以在一个命令中删除所有4个表？

/*
Deployment script for RandomDBdev

This code was generated by a tool.
Changes to this file may cause incorrect behavior and will be lost if
the code is regenerated.
*/

GO
SET ANSI_NULLS, ANSI_PADDING, ANSI_WARNINGS, ARITHABORT, CONCAT_NULL_YIELDS_NULL, QUOTED_IDENTIFIER ON;

SET NUMERIC_ROUNDABORT OFF;


GO
:setvar DatabaseName "RandomDBdev"
:setvar DefaultFilePrefix "RandomDBdev"
:setvar DefaultDataPath "C:\Users\arandomuser\AppData\Local\Microsoft\Microsoft SQL Server Local DB\Instances\v11.0\"
:setvar DefaultLogPath "C:\Users\arandomuser\AppData\Local\Microsoft\Microsoft SQL Server Local DB\Instances\v11.0\"

GO
:on error exit
GO
/*
Detect SQLCMD mode and disable script execution if SQLCMD mode is not supported.
To re-enable the script after enabling SQLCMD mode, execute the following:
SET NOEXEC OFF; 
*/
:setvar __IsSqlCmdEnabled "True"
GO
IF N'$(__IsSqlCmdEnabled)' NOT LIKE N'True'
    BEGIN
        PRINT N'SQLCMD mode must be enabled to successfully execute this script.';
        SET NOEXEC ON;
    END


GO
USE [$(DatabaseName)];


GO

IF (SELECT OBJECT_ID('tempdb..#tmpErrors')) IS NOT NULL DROP TABLE #tmpErrors
GO
CREATE TABLE #tmpErrors (Error int)
GO
SET XACT_ABORT ON
GO
SET TRANSACTION ISOLATION LEVEL READ COMMITTED
GO
BEGIN TRANSACTION
GO
PRINT N'Dropping [dbo].[webpages_Membership]...';


GO
DROP TABLE [dbo].[webpages_Membership];


GO
IF @@ERROR <> 0
   AND @@TRANCOUNT > 0
    BEGIN
        ROLLBACK;
    END

IF @@TRANCOUNT = 0
    BEGIN
        INSERT  INTO #tmpErrors (Error)
        VALUES                 (1);
        BEGIN TRANSACTION;
    END


GO

IF EXISTS (SELECT * FROM #tmpErrors) ROLLBACK TRANSACTION
GO
IF @@TRANCOUNT>0 BEGIN
PRINT N'The transacted portion of the database update succeeded.'
COMMIT TRANSACTION
END
ELSE PRINT N'The transacted portion of the database update failed.'
GO
DROP TABLE #tmpErrors
GO
PRINT N'Update complete.';


GO
/*----------------------------------------------------------------------------------------------------------------------*/
/*
Deployment script for RandomDBdev

This code was generated by a tool.
Changes to this file may cause incorrect behavior and will be lost if
the code is regenerated.
*/

GO
SET ANSI_NULLS, ANSI_PADDING, ANSI_WARNINGS, ARITHABORT, CONCAT_NULL_YIELDS_NULL, QUOTED_IDENTIFIER ON;

SET NUMERIC_ROUNDABORT OFF;


GO
:setvar DatabaseName "RandomDBdev"
:setvar DefaultFilePrefix "RandomDBdev"
:setvar DefaultDataPath "C:\Users\arandomuser\AppData\Local\Microsoft\Microsoft SQL Server Local DB\Instances\v11.0\"
:setvar DefaultLogPath "C:\Users\arandomuser\AppData\Local\Microsoft\Microsoft SQL Server Local DB\Instances\v11.0\"

GO
:on error exit
GO
/*
Detect SQLCMD mode and disable script execution if SQLCMD mode is not supported.
To re-enable the script after enabling SQLCMD mode, execute the following:
SET NOEXEC OFF; 
*/
:setvar __IsSqlCmdEnabled "True"
GO
IF N'$(__IsSqlCmdEnabled)' NOT LIKE N'True'
    BEGIN
        PRINT N'SQLCMD mode must be enabled to successfully execute this script.';
        SET NOEXEC ON;
    END


GO
USE [$(DatabaseName)];


GO

IF (SELECT OBJECT_ID('tempdb..#tmpErrors')) IS NOT NULL DROP TABLE #tmpErrors
GO
CREATE TABLE #tmpErrors (Error int)
GO
SET XACT_ABORT ON
GO
SET TRANSACTION ISOLATION LEVEL READ COMMITTED
GO
BEGIN TRANSACTION
GO
PRINT N'Dropping [dbo].[webpages_OAuthMembership]...';


GO
DROP TABLE [dbo].[webpages_OAuthMembership];


GO
IF @@ERROR <> 0
   AND @@TRANCOUNT > 0
    BEGIN
        ROLLBACK;
    END

IF @@TRANCOUNT = 0
    BEGIN
        INSERT  INTO #tmpErrors (Error)
        VALUES                 (1);
        BEGIN TRANSACTION;
    END


GO

IF EXISTS (SELECT * FROM #tmpErrors) ROLLBACK TRANSACTION
GO
IF @@TRANCOUNT>0 BEGIN
PRINT N'The transacted portion of the database update succeeded.'
COMMIT TRANSACTION
END
ELSE PRINT N'The transacted portion of the database update failed.'
GO
DROP TABLE #tmpErrors
GO
PRINT N'Update complete.';


GO
/*----------------------------------------------------------------------------------------------------------------------*/
/*
Deployment script for RandomDBdev

This code was generated by a tool.
Changes to this file may cause incorrect behavior and will be lost if
the code is regenerated.
*/

GO
SET ANSI_NULLS, ANSI_PADDING, ANSI_WARNINGS, ARITHABORT, CONCAT_NULL_YIELDS_NULL, QUOTED_IDENTIFIER ON;

SET NUMERIC_ROUNDABORT OFF;


GO
:setvar DatabaseName "RandomDBdev"
:setvar DefaultFilePrefix "RandomDBdev"
:setvar DefaultDataPath "C:\Users\arandomuser\AppData\Local\Microsoft\Microsoft SQL Server Local DB\Instances\v11.0\"
:setvar DefaultLogPath "C:\Users\arandomuser\AppData\Local\Microsoft\Microsoft SQL Server Local DB\Instances\v11.0\"

GO
:on error exit
GO
/*
Detect SQLCMD mode and disable script execution if SQLCMD mode is not supported.
To re-enable the script after enabling SQLCMD mode, execute the following:
SET NOEXEC OFF; 
*/
:setvar __IsSqlCmdEnabled "True"
GO
IF N'$(__IsSqlCmdEnabled)' NOT LIKE N'True'
    BEGIN
        PRINT N'SQLCMD mode must be enabled to successfully execute this script.';
        SET NOEXEC ON;
    END


GO
USE [$(DatabaseName)];


GO

IF (SELECT OBJECT_ID('tempdb..#tmpErrors')) IS NOT NULL DROP TABLE #tmpErrors
GO
CREATE TABLE #tmpErrors (Error int)
GO
SET XACT_ABORT ON
GO
SET TRANSACTION ISOLATION LEVEL READ COMMITTED
GO
BEGIN TRANSACTION
GO
PRINT N'Dropping fk_RoleId...';


GO
ALTER TABLE [dbo].[webpages_UsersInRoles] DROP CONSTRAINT [fk_RoleId];


GO
IF @@ERROR <> 0
   AND @@TRANCOUNT > 0
    BEGIN
        ROLLBACK;
    END

IF @@TRANCOUNT = 0
    BEGIN
        INSERT  INTO #tmpErrors (Error)
        VALUES                 (1);
        BEGIN TRANSACTION;
    END


GO
PRINT N'Dropping [dbo].[webpages_Roles]...';


GO
DROP TABLE [dbo].[webpages_Roles];


GO
IF @@ERROR <> 0
   AND @@TRANCOUNT > 0
    BEGIN
        ROLLBACK;
    END

IF @@TRANCOUNT = 0
    BEGIN
        INSERT  INTO #tmpErrors (Error)
        VALUES                 (1);
        BEGIN TRANSACTION;
    END


GO

IF EXISTS (SELECT * FROM #tmpErrors) ROLLBACK TRANSACTION
GO
IF @@TRANCOUNT>0 BEGIN
PRINT N'The transacted portion of the database update succeeded.'
COMMIT TRANSACTION
END
ELSE PRINT N'The transacted portion of the database update failed.'
GO
DROP TABLE #tmpErrors
GO
PRINT N'Update complete.';


GO
/*----------------------------------------------------------------------------------------------------------------------*/
/*
Deployment script for RandomDBdev

This code was generated by a tool.
Changes to this file may cause incorrect behavior and will be lost if
the code is regenerated.
*/

GO
SET ANSI_NULLS, ANSI_PADDING, ANSI_WARNINGS, ARITHABORT, CONCAT_NULL_YIELDS_NULL, QUOTED_IDENTIFIER ON;

SET NUMERIC_ROUNDABORT OFF;


GO
:setvar DatabaseName "RandomDBdev"
:setvar DefaultFilePrefix "RandomDBdev"
:setvar DefaultDataPath "C:\Users\arandomuser\AppData\Local\Microsoft\Microsoft SQL Server Local DB\Instances\v11.0\"
:setvar DefaultLogPath "C:\Users\arandomuser\AppData\Local\Microsoft\Microsoft SQL Server Local DB\Instances\v11.0\"

GO
:on error exit
GO
/*
Detect SQLCMD mode and disable script execution if SQLCMD mode is not supported.
To re-enable the script after enabling SQLCMD mode, execute the following:
SET NOEXEC OFF; 
*/
:setvar __IsSqlCmdEnabled "True"
GO
IF N'$(__IsSqlCmdEnabled)' NOT LIKE N'True'
    BEGIN
        PRINT N'SQLCMD mode must be enabled to successfully execute this script.';
        SET NOEXEC ON;
    END


GO
USE [$(DatabaseName)];


GO

IF (SELECT OBJECT_ID('tempdb..#tmpErrors')) IS NOT NULL DROP TABLE #tmpErrors
GO
CREATE TABLE #tmpErrors (Error int)
GO
SET XACT_ABORT ON
GO
SET TRANSACTION ISOLATION LEVEL READ COMMITTED
GO
BEGIN TRANSACTION
GO
PRINT N'Dropping [dbo].[webpages_UsersInRoles]...';


GO
DROP TABLE [dbo].[webpages_UsersInRoles];


GO
IF @@ERROR <> 0
   AND @@TRANCOUNT > 0
    BEGIN
        ROLLBACK;
    END

IF @@TRANCOUNT = 0
    BEGIN
        INSERT  INTO #tmpErrors (Error)
        VALUES                 (1);
        BEGIN TRANSACTION;
    END


GO

IF EXISTS (SELECT * FROM #tmpErrors) ROLLBACK TRANSACTION
GO
IF @@TRANCOUNT>0 BEGIN
PRINT N'The transacted portion of the database update succeeded.'
COMMIT TRANSACTION
END
ELSE PRINT N'The transacted portion of the database update failed.'
GO
DROP TABLE #tmpErrors
GO
PRINT N'Update complete.';


GO

/*----------------------------------------------------------------------------------------------------------------------*/

我对存储过程没有太多经验，我们非常感谢您提供任何帮助或意见。只是想让重复性任务变得容易一些。

Answer 1

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE PROCEDURE DropTables
AS
BEGIN
    DROP TABLE Table1
    DROP TABLE Table2
    DROP TABLE Table3
    DROP TABLE Table4
END
GO

使用EXEC DropTables

进行调用

在VS2012中创建存储过程一次删除4个表？

1 个答案: