What is clustered Index? How to create clustered Index?

What is clustered Index?

1.      The clustered Index is created automatically on primary key column.

2.      One table can only create one and only clustered Index.

3.      Clustered index is sorting all the rows physically.
4.   Clustered index is works based on the Binary tree concept.

How to Create Clustered Index?

-- CREATE CLUSTERED INDEX

CREATE CLUSTERED INDEX Indexname_EmlloyeeClust ON Employee

(

    [EmpName] ASC or DESC,

    [EmpDepartment] ASC or DESC

)

-- OR

-- CREATE CLUSTERED INDEX

CREATE CLUSTERED INDEX Indexname_EmlloyeeClust ON Employee

(

   [EmpName] ASC,

   [EmpDepartment] ASC

)

WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, SORT_IN_TEMPDB = OFF,

IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS  = ON,

ALLOW_PAGE_LOCKS  = OFF)

ON [PRIMARY]

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