if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[user_info_2]') and OBJECTPROPERTY(id, N'IsProcedure') = 1)
drop procedure [dbo].[user_info_2]
GO

if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[user_info_3]') and OBJECTPROPERTY(id, N'IsProcedure') = 1)
drop procedure [dbo].[user_info_3]
GO

if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[user_info]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [dbo].[user_info]
GO

CREATE TABLE [dbo].[user_info] (
[id] [int] IDENTITY (1, 1) NOT NULL ,
[user_name] [varchar] (40) COLLATE Chinese_PRC_CI_AS NOT NULL ,
[password] [varchar] (20) COLLATE Chinese_PRC_CI_AS NOT NULL
) ON [PRIMARY]
GO

ALTER TABLE [dbo].[user_info] WITH NOCHECK ADD
CONSTRAINT [PK_user_info] PRIMARY KEY CLUSTERED
(
[user_name]
) ON [PRIMARY]
GO

SET QUOTED_IDENTIFIER OFF
GO
SET ANSI_NULLS OFF
GO

CREATE PROCEDURE [output_1]
@sid int output
AS
set @sid=2
GO
SET QUOTED_IDENTIFIER OFF
GO
SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER OFF
GO
SET ANSI_NULLS OFF
GO

CREATE PROCEDURE [return_1]
(@user_name varchar(40),@password varchar(20))
AS
if exists(select id from user_info where user_name=@user_name and password=@password)
return 1
else
return 0
GO
SET QUOTED_IDENTIFIER OFF
GO
SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO
SET ANSI_NULLS OFF
GO

CREATE PROCEDURE [user_info_1]
(@user_name

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