If you define a primary key on a table, an index for the primary key column will be created by default. The tutorial exercise below shows you the index created as part of the primary key column of "ggl_links":

USE GlobalGuideLineDatabase;

GO

-- Drop the old table, if needed

DROP TABLE ggl_links;

GO

-- Create a table with primary key

CREATE TABLE ggl_links (

id INT PRIMARY KEY,

url VARCHAR(80) NOT NULL,

notes VARCHAR(1024),

counts INT,

created DATETIME NOT NULL DEFAULT(getdate())

);

GO

-- Create an index for column "url"

CREATE INDEX ggl_links_url ON ggl_links (url);

GO

-- View indexes

EXEC SP_HELP ggl_links;

GO

index_name   index_description   keys

----------------------- -------------------------- ----

ggl_links_url  nonclustered located  url

     on PRIMARY

PK__ggl_links__239E4DCF clustered, unique, primary

     key located on PRIMARY id

Notice that the index created as part of the primary key is named by SQL Server as "PK__ggl_links__239E4DCF".