Ranking Functions in SQL Server

The Ranking functions in SQL Server returns ranking value for each row in a partition. Depending on the function you select, return rank value will be different.

The SQL Server provides various Rank Functions, which allows us to assign different ranks. The following table will show you the list of available Ranking Functions in SQL Server

Rank Functions in SQL Server	Description
RANK	It will assign the rank number to each record present in a partition.
DENSE_RANK	It will assign the rank number to each record within a partition without skipping the rank numbers
NTILE	This rank function will assign the rank number to each record present in a partition.
ROW_NUMBER	It will assign the sequential rank number to each unique record present in a partition.

Ranking Functions in SQL Server example

In this example, we are going to show you the functionality of all the rank functions at one place

-- SQL RANK Functions
SELECT [FirstName]
      ,[LastName]
      ,[Education]
      ,[Occupation]
      ,[YearlyIncome]
      ,RANK() OVER (ORDER BY [YearlyIncome] DESC) AS RANK
      ,DENSE_RANK() OVER (ORDER BY [YearlyIncome] DESC) AS [DENSE_RANK]
      ,ROW_NUMBER() OVER (ORDER BY [YearlyIncome] DESC) AS [ROW NUMBER]
      ,NTILE(3) OVER (ORDER BY [YearlyIncome] DESC) AS [NTILE NUMBER]
  FROM [Customers]

OUTPUT

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