CLUSTERED INDEX

Defines the order of the table records. Thus you can only have one clustered index.

CREATE CLUSTERED INDEX cix_SchemaName_TableName_ColName 
	ON SchameName.TableName (ColName)
	
-- using clustered index for multiple columns
CREATE CLUSTERED INDEX cix_SchemaName_TableName_ColName1_ColName2 
	ON SchameName.TableName (ColName1, ColName2)

Note that the ordering of the records is done by ColName1 first, then on a match then ColName2