Adding auto incrementing primary key to an existing table in SQL SERVER 2005

Question

I have a table with 8,000 rows of data and will be adding more. but I forgot to put a primary key in the beginning. so that each row has a unique key. later i added a primar

Answer 1

CREATE TABLE [dbo].[TheTable](
    [TheID] [int] IDENTITY(1,1) NOT NULL,
    [TheColumn] [nvarchar](100) NOT NULL,
 CONSTRAINT [PK_TheTable] PRIMARY KEY CLUSTERED 
(
    [TheID] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]


INSERT INTO [dbo].[TheTable]
        ( [TheColumn] )
SELECT 'one'
UNION 
SELECT 'two'

SELECT * FROM [dbo].[TheTable] TT