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POHow to come up with a script for modifying an existing table in the database without losing the existing information?
 

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  1. POHow to come up with a script for modifying an existing table in the database without losing the existing information?
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    <p>I have an application with a database which they are working well and everything is fine. </p> <p>Now, I just need to modify one table in the database by adding more columns to it. I am using SQL Server and the database administrator asked me to provide him with the script of modifying that table. </p> <p><strong>So how to do that?</strong> </p> <p>I am using SQL Server Management Studio and when I click on the table right-click, I used to select script to create, and Management Studio will give me the script. Now, this table has information, so I think I should not use create script for this table. </p> <p>The new columns should allow null values. </p> <p><strong>So what should I use?</strong></p> <p>For your information, here is the script for creating the table:</p> <pre><code>SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO SET ANSI_PADDING ON GO CREATE TABLE [dbo].[Test]( [ID] [numeric](18, 0) IDENTITY(1,1) NOT NULL, [No] [char](20) NOT NULL, [Date] [smalldatetime] NULL, [ProjectType] [char](500) NULL, [ProjectPhase] [char](300) NULL, [rejected_reason] [varchar](max) NULL, [archived_reason] [varchar](max) NULL, [forward_to] [varchar](max) NULL, [forward_type] [varchar](max) NULL, [forward_concern] [varchar](max) NULL, CONSTRAINT [PK_Test] PRIMARY KEY CLUSTERED ( [ID] ASC )WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY] ) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY] GO SET ANSI_PADDING OFF GO ALTER TABLE [dbo].[Test] ADD CONSTRAINT [DF_LLATestB_No] DEFAULT ('*') FOR [No] GO ALTER TABLE [dbo].[Test] ADD CONSTRAINT [DF_LLATestB_Status] DEFAULT ((2)) FOR [Status] GO ALTER TABLE [dbo].[Test] ADD CONSTRAINT [DF_LLATestB_AID] DEFAULT ((0)) FOR [AID] GO ALTER TABLE [dbo].[Test] ADD CONSTRAINT [DF_LLATestB_Hit] DEFAULT ((0)) FOR [Hit] GO ALTER TABLE [dbo].[Test] ADD CONSTRAINT [DF_LLATestB_Sent] DEFAULT ((0)) FOR [Sent] GO ALTER TABLE [dbo].[Test] ADD CONSTRAINT [DF_LLATestB_SentTo] DEFAULT ((0)) FOR [SentTo] GO ALTER TABLE [dbo].[Test] ADD CONSTRAINT [DF_LLa_Added_To_Cart] DEFAULT ((0)) FOR [Added_To_Cart] GO </code></pre> <p>Examples of the new columns that should be added to this table are:</p> <pre><code>[rejected_reason] [varchar](max) NULL, [archived_reason] [varchar](max) NULL, [forward_to] [varchar](max) NULL, [forward_type] [varchar](max) NULL, </code></pre>
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      1. POHow to come up with a script for modifying an existing table in the database without losing the existing information?
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    1. COread books online: ALTER TABLE
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      1. USMitch Wheat
 

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