Analytic Functions (Transact-SQL)

Take a look to analytic Functions!

CUME_DIST (Transact-SQL)	LEAD (Transact-SQL)
FIRST_VALUE (Transact-SQL)	PERCENTILE_CONT (Transact-SQL)
LAG (Transact-SQL)	PERCENTILE_DISC (Transact-SQL)
LAST_VALUE (Transact-SQL)	PERCENT_RANK (Transact-SQL)